{ "data": { "a": { "slug": "amazon-nova-sonic", "name": "Amazon Nova 2 Sonic", "vendor": "Amazon Web Services", "vendorUrl": "https://aws.amazon.com/ai/generative-ai/nova/speech/", "kind": "http-api", "category": "voice-agents", "summary": "Amazon Nova 2 Sonic is AWS's speech-to-speech model for voice agents on Amazon Bedrock. Clients stream audio and text events both ways over the `InvokeModelWithBidirectionalStream` API, with turn-taking, interruptions, asynchronous tool calls and multilingual voices.", "url": "https://www.anchorterminal.com/tools/amazon-nova-sonic", "markdownUrl": "https://www.anchorterminal.com/tools/amazon-nova-sonic.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/amazon-nova-sonic.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/amazon-nova-sonic.json", "dns": "amazon-nova-sonic.grade.anchorterminal.com", "repo": "https://github.com/aws-samples/amazon-nova-samples", "transports": [ "http" ], "packages": [ { "registry": "pypi", "name": "aws-sdk-bedrock-runtime" }, { "registry": "npm", "name": "@aws-sdk/client-bedrock-runtime" } ], "auth": "api-key", "authNotes": "AWS Signature Version 4 with IAM credentials or a role, scoped per model ARN by IAM policy. The Sonic quickstart signs with environment credentials. Whether Bedrock API keys work on the bidirectional stream wasn't confirmed. Access is self-serve once a person has an AWS account.", "pricing": "usage", "pricingNotes": "Billed per speech and text token on Bedrock on demand. The Nova and Bedrock pricing pages draw their price tables by script, so the figures weren't read on 6 November 2026. No model-specific free tier; new AWS accounts get up to $200 in Free Tier credits.", "priceSummary": "Pay per use", "where": "local", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Nova or Bedrock docs (checked 2026-11-06). Billing runs through the AWS account.", "endpoints": [] }, "toolCount": 0, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-11-06" }, "docsUrl": "https://docs.aws.amazon.com/nova/latest/nova2-userguide/using-conversational-speech.html", "llmsTxt": "https://docs.aws.amazon.com/nova/latest/nova2-userguide/llms.txt", "capabilities": [ "voice.agent", "voice.speech-to-speech", "voice.tools", "voice.telephony" ], "tags": [ "official", "hosted", "usage-priced", "closed-source", "python", "typescript", "llms-txt", "streaming", "enterprise" ], "lastRelease": "2026-05-28", "graded": true, "anchor": { "graded": true, "score": 67.6, "grade": "B", "agentReady": false, "rank": 314, "ranked": true, "rankOf": 1486, "categoryRank": 6, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 64, "maintenance": 50, "payments": 10, "reliability": 95, "schema": 75, "security": 77, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "low", "date": "2026-11-06" }, "negative": 0, "verdict": "Nova 2 Sonic runs speech-to-speech conversations with asynchronous tools on Bedrock, with IAM scoping, no default storage of inputs and a 99.9 per cent SLA. Sessions cut off at 8 minutes, the Python SDK is pre-alpha, and the event payloads have no schema file. Prices are in a script-drawn table we couldn't read.", "bestFor": "Voice agents on AWS, call centres on Amazon Connect, teams that want IAM and in-account data handling.", "strengths": [ "No Bedrock event on the AWS Health history in the 90 days from 8 August 2026", "IAM scoping per model ARN with SigV4 and temporary credentials", "Bedrock stores no inputs or outputs by default, and Sonic isn't on the list of models kept for abuse review", "Asynchronous tool calls let the model keep speaking while a tool runs", "Telephony guides for Twilio, Vonage and Amazon Connect" ], "weaknesses": [ "Connections end after 8 minutes, so long calls need the session-continuation pattern", "The Python SDK for bidirectional streaming is pre-alpha and needs Python 3.12", "Sonic's event payloads are documented as examples, with no schema file", "20 concurrent sessions per Region, not adjustable through Service Quotas", "The March and May 2026 refreshes changed the model in place under the same ID" ], "agentNotes": [ "Plan a reconnect before 8 minutes and replay chat history (up to 200 KB) at the start of the new session", "Send session, prompt and content start events in order before any audio", "Make tool calls safe to repeat, since a reconnect can replay them", "Back off on `ThrottlingException` and stay within 20 concurrent sessions per Region", "Use the polyglot voices TIFFANY or MATTHEW when callers may switch language" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "low", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 67.6 } ], "editorialScores": { "ergonomics": 64, "maintenance": 50, "payments": 10, "reliability": 95, "schema": 75, "security": 77, "transparency": 64 }, "provenanceScore": 94, "checked": { "categories": { "ergonomics": "2026-11-06", "maintenance": "2026-11-06", "payments": "2026-11-06", "reliability": "2026-11-06", "schema": "2026-11-06", "security": "2026-11-06", "transparency": "2026-11-06" }, "last": "2026-11-06", "oldest": "2026-11-06", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "pip install aws-sdk-bedrock-runtime" }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/amazon-nova-sonic" }, "sameCompany": [ "amazon-bedrock", "amazon-nova-embeddings", "amazon-bedrock-guardrails", "amazon-transcribe", "amazon-polly", "agentcore-memory", "agentcore-identity", "aws-secrets-manager", "agentcore-web-search", "aws-mcp-servers", "amazon-ses", "amazon-location", "amazon-translate", "amazon-ads-api", "amazon-creators-api" ], "area": "voice", "provenance": { "legalEntity": "Amazon Web Services, Inc.", "domain": "amazon.com", "domainRegistered": "1994-11-01", "domainNote": "The endpoint is on amazonaws.com, an AWS domain registered on 2005-08-18. The security.txt on aws.amazon.com expires on 2027-10-16.", "endpointOnVendorDomain": true, "terms": "https://aws.amazon.com/service-terms/", "privacy": "https://aws.amazon.com/privacy/", "statusPage": "https://health.aws.amazon.com/health/status", "changelog": "https://docs.aws.amazon.com/nova/latest/nova2-userguide/release-notes.html", "securityTxt": "valid", "checked": "2026-11-06", "notes": [ "The AWS Service Terms were last updated on 30 October 2026. Section 50.12 covers Amazon Bedrock, and Bedrock is not among the services section 50.3 lists for use of content to improve AWS services.", "RDAP gives 1994-11-01 for amazon.com and 2005-08-18 for amazonaws.com.", "aws.amazon.com/.well-known/security.txt has Contact, Policy and Encryption fields. Its Expires value is 2027-10-16T16:25:03Z, re-read on 2026-11-01.", "docs.aws.amazon.com/robots.txt allows the Nova and Bedrock pages read. The Nova and Bedrock pricing pages draw their tables by script, so Nova 2 Sonic's prices weren't read." ], "score": 94 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/amazon-nova-sonic.json", "live": { "slug": "amazon-nova-sonic", "versions": [ { "registry": "npm", "name": "@aws-sdk/client-bedrock-runtime", "version": "3.1164.0", "seenAt": "2026-11-06T23:05:35.366071006Z" }, { "registry": "pypi", "name": "aws-sdk-bedrock-runtime", "version": "0.12.0", "released": "2026-10-08", "seenAt": "2026-11-06T23:05:33.518358123Z" } ], "githubStars": 456, "npmWeekly": 21825916, "pypiWeekly": 112826, "securityTxt": { "url": "https://amazon.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-11-07T16:00:18.354437696Z" }, "llmsTxt": { "url": "https://docs.aws.amazon.com/nova/latest/nova2-userguide/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:31:25.828159373Z" }, "pages": [ { "url": "https://docs.aws.amazon.com/nova/latest/nova2-userguide/release-notes.html", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:05:20.262718007Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "48cb3eb6c070" } ], "updatedAt": "2026-11-07T16:00:18.354437696Z" } }, "answer": "GPT-Live scores 70.6 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 6 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability.", "b": { "slug": "gpt-live", "name": "GPT-Live", "vendor": "OpenAI", "vendorUrl": "https://openai.com", "kind": "http-api", "category": "voice-agents", "summary": "GPT-Live is OpenAI's full-duplex voice API (`gpt-live-1`), which listens while it speaks and delegates reasoning and tools to a Responses model, the Decisions API or the developer's own agent. Clients connect over WebRTC, WebSocket or SIP.", "url": "https://www.anchorterminal.com/tools/gpt-live", "markdownUrl": "https://www.anchorterminal.com/tools/gpt-live.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/gpt-live.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/gpt-live.json", "dns": "gpt-live.grade.anchorterminal.com", "repo": "https://github.com/openai/openai-python", "license": "Proprietary service. The service terms on openai.com were not read. The Python SDK is Apache-2.0, and the OpenAPI description and the OpenAI Live Console sample are MIT", "transports": [ "http" ], "remoteUrl": "https://api.openai.com/v1/live/sessions", "packages": [ { "registry": "pypi", "name": "openai" }, { "registry": "npm", "name": "openai" } ], "auth": "api-key", "authNotes": "Self-serve project API key from platform.openai.com, sent as a Bearer header from a trusted server. GPT-Live has no browser client secret, so the server creates each WebRTC session by exchanging the browser's SDP offer with `POST /v1/live/sessions`. WebSocket connections take no query parameters. Native Decisions delegation needs the `api.decisions.write` permission. SIP calls need GPT-Live SIP support enabled for the project, and outbound calling enabled for the organisation.", "pricing": "usage", "pricingNotes": "Voice sessions cost $0.05 a minute, billed per second with no rounding up. Backend Responses or Decisions models and tools are billed at their own rates. A WebRTC session bills 15 seconds at creation, credited once it runs. Creating a prompt-generated voice is free. The Free usage tier is not supported (https://developers.openai.com/api/docs/models/gpt-live-1.md, checked 2026-10-17).", "priceSummary": "Pay per use", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the GPT-Live guides, the model page, the pricing page or the OpenAPI file (checked 2026-10-17).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-17" }, "docsUrl": "https://developers.openai.com/api/docs/guides/live", "llmsTxt": "https://developers.openai.com/api/docs/llms.txt", "openapi": "https://github.com/openai/openai-openapi/blob/main/openapi.yaml", "capabilities": [ "voice.speech-to-speech", "voice.agent", "voice.tools", "voice.telephony", "voice.design", "voice.recording" ], "tags": [ "official", "hosted", "usage-priced", "closed-source", "speech-to-speech", "webrtc", "websocket", "sip", "streaming", "typescript", "python", "openapi", "llms-txt", "api-key", "function-calling", "mcp-client", "data-residency", "status-page" ], "lastRelease": "2026-10-31", "graded": true, "anchor": { "graded": true, "score": 70.6, "grade": "BB", "agentReady": true, "rank": 191, "ranked": true, "rankOf": 1486, "categoryRank": 5, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 76, "maintenance": 82, "payments": 20, "reliability": 62, "schema": 87, "security": 81, "transparency": 90 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": 0, "verdict": "A generally available full-duplex voice API with a typed OpenAPI contract, published concurrency limits and a flat $0.05 a minute for the voice session. Its status component dates from 16 October, so most of its life has no incident history, the Free tier is excluded, and a sideband event was renamed on 28 October without notice.", "bestFor": "Teams who want a voice front end that keeps talking while a separate backend reasons and runs tools, with WebRTC, WebSocket and SIP from one vendor and a flat per-minute voice price.", "strengths": [ "The OpenAPI 3.1 file has seven `/live/sessions` paths and 190 schemas named for Live, typing client and server events on the primary and sideband connections.", "Voice sessions cost $0.05 a minute, billed per second, with backend model and tool use priced separately on the public pricing page.", "Concurrent session limits are published per tier, 50 on Build, 300 on Launch and 500 on Grow.", "Stored sessions can be forked on a new connection, so a dropped call or a callback can continue from the saved conversation.", "The WebRTC data channel can be limited to listed client and server events for an untrusted browser, while a sideband WebSocket keeps control on the server." ], "weaknesses": [ "The Live component on status.openai.com has data only from 16 October 2026, so the five weeks after general availability have no readable history.", "On 28 October 2026 the sideband's DTMF delivery event changed name from `transport.dtmf.send` to `transport.dtmf.sent` with no changelog entry or notice.", "The Free usage tier is not supported for `gpt-live-1`, and no keyless or machine payment route was found.", "There is no public endpoint to delete a stored session recording. Stored recordings expire after 30 days.", "Session creation has no idempotency key. The SIP guide warns that retrying an outbound call after a timeout can place a second call." ], "agentNotes": [ "Create sessions on a server with the project API key. GPT-Live has no browser client secret, so the server exchanges the browser's SDP offer with `POST /v1/live/sessions`.", "Choose `delegation.type` at creation. Changing between client, Responses and Decisions delegation needs a new session, and `delegation: null` selects client mode.", "After `session.started`, listen for `error` with code `responses_validation_failed`. Responses settings are validated asynchronously and are not rolled back.", "Do not retry an outbound SIP `POST /v1/live/sessions` after a timeout. Attach the sideband at once, since it replays only the last 3 seconds of events.", "Keep the transport open until `session.closed` to read the final `usage.seconds`. A WebRTC session bills 15 seconds at creation, credited once it runs.", "On SIP calls, send keypresses with `transport.dtmf.send` on the sideband and wait for `transport.dtmf.sent`. Before 28 October that delivery event was named `transport.dtmf.send`." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 70.6 } ], "editorialScores": { "ergonomics": 76, "maintenance": 82, "payments": 20, "reliability": 62, "schema": 87, "security": 81, "transparency": 85 }, "provenanceScore": 95, "checked": { "categories": { "ergonomics": "2026-11-01", "maintenance": "2026-11-01", "payments": "2026-11-01", "reliability": "2026-11-01", "schema": "2026-11-01", "security": "2026-11-01", "transparency": "2026-11-01" }, "last": "2026-11-01", "lastMoved": "2026-11-01", "oldest": "2026-11-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "npm install openai", "http": "curl -X POST https://api.openai.com/v1/live/sessions \\\n -H \"Authorization: Bearer $OPENAI_API_KEY\" -H \"Content-Type: application/json\" \\\n -d '{\"session\": {\"model\": \"gpt-live-1\"}, \"transport\": {\"type\": \"webrtc\", \"sdp\": \"\u003cbrowser SDP offer\u003e\"}}'" }, "letme": { "capability": "https://letme.dev/voice.speech-to-speech", "tool": "https://letme.dev/gpt-live" }, "sameCompany": [ "openai-api", "openai-embeddings", "openai-guardrails", "openai-moderation", "openai-image-api", "openai-sora", "openai-speech-to-text", "openai-realtime", "openai-agents-sdk", "openai-decisions-api", "openai-agents-api", "openai-codex", "gpt-oss-120b", "gpt-oss-20b" ], "area": "voice", "unitPrices": [ { "item": "gpt-live-1 voice session", "unit": "call-minute", "usd": 0.05, "note": "Billed per second of active session time. Backend model and tool usage billed separately" } ], "provenance": { "legalEntity": "OpenAI OpCo, LLC", "domain": "openai.com", "domainRegistered": "2007-01-19", "endpointOnVendorDomain": true, "terms": "https://openai.com/policies/services-agreement/", "privacy": "https://openai.com/policies/privacy-policy/", "statusPage": "https://status.openai.com", "changelog": "https://developers.openai.com/api/docs/changelog", "securityTxt": "valid", "checked": "2026-11-01", "notes": [ "Same entity, terms and privacy policy as the OpenAI API listing. openai.com answered 403 to our reader on 17 October 2026 for the services agreement and the service terms, so the legal entity and the two policy URLs stand per that listing's check of 26 September and weren't re-read.", "RDAP gives openai.com a registration date of 2007-01-19, read on 17 October 2026.", "status.openai.com lists a Live component under APIs, with data available from 2026-10-16T19:53:57Z, re-read on 1 November 2026.", "openai.com/.well-known/security.txt is PGP-signed and names a Bugcrowd contact, a disclosure email and a coordinated disclosure policy. It has no Expires field, which RFC 9116 requires. Re-read on 1 November 2026.", "robots.txt on developers.openai.com allows all, on openai.com allows all but /microsoft-for-startups/ (both re-read on 1 November 2026), and status.openai.com answers 404, which means no rules." ], "score": 95 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/gpt-live.json", "live": { "slug": "gpt-live", "probe": { "target": "https://api.openai.com/v1/live/sessions", "method": "get", "lastAt": "2026-11-07T18:20:28.370715817Z", "lastOk": true, "lastStatus": 400, "lastMs": 312, "authRequired": false, "uptime24h": 100, "uptime30d": 99.98, "p50ms24h": 182, "p95ms24h": 270, "samples24h": 239, "samples30d": 5145, "days": [ { "date": "2026-10-17", "probes": 21, "ok": 21 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 252 }, { "date": "2026-10-21", "probes": 253, "ok": 253 }, { "date": "2026-10-22", "probes": 253, "ok": 253 }, { "date": "2026-10-23", "probes": 248, "ok": 248 }, { "date": "2026-10-24", "probes": 251, "ok": 251 }, { "date": "2026-10-25", "probes": 250, "ok": 250 }, { "date": "2026-10-26", "probes": 252, "ok": 252 }, { "date": "2026-10-27", "probes": 249, "ok": 249 }, { "date": "2026-10-28", "probes": 251, "ok": 250 }, { "date": "2026-10-29", "probes": 248, "ok": 248 }, { "date": "2026-10-30", "probes": 249, "ok": 249 }, { "date": "2026-10-31", "probes": 251, "ok": 251 }, { "date": "2026-11-01", "probes": 249, "ok": 249 }, { "date": "2026-11-02", "probes": 250, "ok": 250 }, { "date": "2026-11-03", "probes": 248, "ok": 248 }, { "date": "2026-11-04", "probes": 246, "ok": 246 }, { "date": "2026-11-05", "probes": 185, "ok": 185 }, { "date": "2026-11-06", "probes": 241, "ok": 241 }, { "date": "2026-11-07", "probes": 187, "ok": 187 } ] }, "vendorStatus": { "page": "https://status.openai.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:13.528757398Z" }, "versions": [ { "registry": "github", "name": "openai/openai-python", "version": "v3.47.0", "released": "2026-11-05", "seenAt": "2026-11-06T23:30:20.676817814Z" }, { "registry": "npm", "name": "openai", "version": "7.53.0", "seenAt": "2026-11-06T23:30:20.417212486Z" }, { "registry": "pypi", "name": "openai", "version": "3.46.0", "released": "2026-11-05", "seenAt": "2026-11-06T23:30:20.148639521Z" } ], "githubStars": 32064, "npmWeekly": 56543040, "pypiWeekly": 91156146, "securityTxt": { "url": "https://openai.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-11-07T16:00:49.231731777Z" }, "llmsTxt": { "url": "https://developers.openai.com/api/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:37.767968898Z" }, "domain": { "domain": "openai.com", "registered": "2007-01-19", "source": "https://rdap.verisign.com/com/v1/domain/openai.com", "checkedAt": "2026-11-01T14:19:18.345389832Z" }, "pages": [ { "url": "https://developers.openai.com/api/docs/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-11-07T14:04:21.035014241Z", "changedAt": "2026-11-07T14:04:21.035014241Z", "fingerprint": "044fa3e06774" }, { "url": "https://openai.com/policies/privacy-policy/", "kind": "privacy", "status": 403, "checkedAt": "2026-11-07T14:15:24.160423778Z", "changedAt": "2026-10-11T19:31:08.710809907Z", "fingerprint": "604e9f69c16a" }, { "url": "https://openai.com/policies/services-agreement/", "kind": "terms", "status": 403, "checkedAt": "2026-11-07T14:15:26.18317567Z", "changedAt": "2026-10-04T15:46:24.458479472Z", "fingerprint": "46a4b30744ca" } ], "github": { "repo": "openai/openai-python", "checkedAt": "2026-11-02T09:13:10.459648475Z", "stars": 32015, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T03:47:02Z", "openIssues": 40, "openPRs": 54, "issuesOpened90d": 42, "issuesClosed90d": 220, "prsMerged90d": 437, "ci": { "branch": "main", "runs": 50, "success": 50, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-11-02T03:19:31Z" }, "replies": { "sampled": 25, "unanswered": 9, "medianDays": 3.6 } }, "updatedAt": "2026-11-07T18:21:13.528757398Z" } }, "edges": [ { "by": 33, "category": "reliability", "leads": "amazon-nova-sonic", "name": "Reliability", "reasons": { "a": "Hosted reading. AWS Health Dashboard with per-service, per-Region history (20). The dashboard history file (newest event 30 October 2026) lists no Bedrock event in the 90 days from 8 August, and the 3 September us-west-2 event names STS, Connect and IAM Identity Center, not Bedrock. The public dashboard records broad events only, so 25 of 30, as amazon-nova-embeddings was read. Quotas published, 20 concurrent requests per Region, not adjustable (15). The stream API lists `ThrottlingException` (429), `ServiceUnavailableException` (503), `ModelTimeoutException` (408) and `ModelStreamErrorException` (424), Bedrock's troubleshooting guide advises backoff with jitter, and the 8-minute connection limit comes with a session-continuation sample (15). Bedrock's SLA of 99.9 per cent a month per Region for model APIs, as read for amazon-nova-embeddings on 1 November (10). Generally available since 2 December 2025 (10). 20 + 25 + 15 + 15 + 10 + 10 = 95.", "b": "Graded as a hosted API. status.openai.com has a Live component under APIs, with data available from 19:53 UTC on 16 October 2026, five weeks after general availability (20). Re-read on 1 November. The feed (102 items) names Live in one incident, the 21 October degraded performance across ChatGPT, Codex and the APIs, where the incident page has Live degraded from 02:26 to 02:48 UTC, 22 minutes and minor. The API-wide majors of 17 and 29 September fall before the component existed, so whether they touched Live can't be read, and most of the window since general availability on 10 September has no readable history. An unreadable window isn't credited (5 of 30). The model page, re-read on 1 November, publishes concurrent session limits per tier, 50 on Build, 300 on Launch and 500 on Grow, and the SIP guide gives a 3-minute ringing limit and a 2-hour call limit (15). The OpenAPI file lists 429 and 503 on session creation and the rate limits guide documents `Retry-After` and backoff. Safe-retry guidance is explicit (check an action's outcome before retrying, deduplicate webhooks and events by ID, never retry an outbound call after a timeout), but session creation has no idempotency key (12 of 15). No SLA was found in the developer docs (0). Generally available since 10 September 2026 (10). Native Decisions delegation rests on the Decisions API, generally available since 22 October. 20 + 5 + 15 + 12 + 0 + 10 = 62." }, "scores": { "a": 95, "b": 62 } }, { "by": 32, "category": "maintenance", "leads": "gpt-live", "name": "Maintenance \u0026 community", "reasons": { "a": "Read as a model. The newest dated change is the May 2026 refresh, completed on 28 May, 162 days before this check (10). No Sonic release note or document history entry in the 90 days from 8 August. The pre-alpha Python SDK shipped 0.9.0, 0.10.0, 0.11.0 and 0.12.0 in the window, counted half (10 of 20). Release notes, document history, re:Post and AWS Support (10 of 15). The JavaScript Bedrock runtime client is current at 3.1163.0, while the Python route is pre-alpha (10 of 15). The SDKs ship on AWS's release train; CI not read (10). Total 50.", "b": "The last dated changelog entry tagged `v1/live/sessions` is still 16 October 2026, and the Live contract changed again after it, with the Decisions inputs revised on 24 October and a SIP DTMF command added on 28 October in the OpenAPI file, shipped in the Python SDK 3.42.0 on 31 October (30). Three changelog entries in the last 90 days, on 10 September, 15 October and 16 October (20). Closed service with a changelog updated several times a week and a community forum and Discord linked from the docs, which we did not test (10 of 15). Current official SDKs, with `openai` for Python at 3.42.0 on 31 October 2026 and Live changes in several releases since 10 September (15). The SDK is Apache-2.0 and released often. Its CI results were not read (7 of 10). 30 + 20 + 10 + 15 + 7 = 82." }, "scores": { "a": 50, "b": 82 } }, { "by": 12, "category": "schema", "leads": "gpt-live", "name": "Schema \u0026 documentation", "reasons": { "a": "The Bedrock service model types `InvokeModelWithBidirectionalStream`, but the Sonic events inside it (session, prompt, content, tool and usage events) are JSON payloads documented only in the guide, with no schema file (12 of 25). llms.txt and Markdown copies of the Nova 2 guide (10). Guides on the event lifecycle, barge-in, turn-taking, async tools and chat history say when and how to use each (16 of 20). Event fields are documented as JSON examples and tables, not typed schemas (10 of 15). Sample repositories in several languages and the API's exceptions with HTTP codes (12 of 15). Release notes and document history, with in-place model refreshes and a versioned model ID (15). Total 75.", "b": "The OpenAPI 3.1 file in `openai/openai-openapi` (re-read from a clone at its 31 October commit) has seven `/live/sessions` paths and 190 component schemas whose names start with Live by our count, up from the 17 October file with the 24 October revision of Decisions inputs and the 28 October DTMF command, and typed client and server events on the primary and sideband connections. It is not an AsyncAPI document, so the WebSocket channels are described only as event schemas (22 of 25). llms.txt and a Markdown twin of every page (10). The delegation guide has a table of when to choose Responses or client delegation, the connection guides say when to use WebRTC, WebSocket or SIP, and the Decisions guide says when to delegate or react to transcripts (17 of 20). Fields carry enums and limits, such as `delegation.type`, SIP reject codes 300 to 699 and 500-token appends, but `model` also accepts any string and the Live MCP tool schema types only `type` (12 of 15). Python and JavaScript examples on every guide, an `error` event with a documented shape and several named codes, and a table of close reasons. No full catalogue of Live error codes was found, and three JavaScript examples in the Markdown twins are empty (12 of 15). A dated changelog tags entries with `v1/live/sessions`, there is one snapshot, and the deprecated webhook event is named (14 of 15)." }, "scores": { "a": 75, "b": 87 } }, { "by": 12, "category": "ergonomics", "leads": "gpt-live", "name": "Agent ergonomics", "reasons": { "a": "Scored as an API. Responses carry transcripts of both sides and usage events, chat history is capped at 200 KB and can be injected once per session (15 of 25). Output controls are voice, turn-taking sensitivity and text or audio input (12 of 20). Typed exceptions with HTTP codes, while errors inside the event stream are less documented (15 of 20). Asynchronous tool calls let the model keep talking, and AWS samples show how to resume after the 8-minute limit, with nothing on repeating tool side effects after a reconnect (12 of 20). A session needs a sequence of start events before audio. The JavaScript SDK is current, but the Python SDK the quickstart uses is pre-alpha and needs Python 3.12 (10 of 15). Total 64.", "b": "Scored as a model API. Context is managed by the service in a 128,000-token window with background summaries, startup history is capped at 128 messages and 8,192 tokens, and `session.usage.updated` reports a context `usage_ratio`. The client cannot set its own truncation (20 of 25). There are no lists to page. The WebRTC frontend can be restricted to listed server events, transcripts are optional, and backend `max_output_tokens` is configurable (12 of 20). Errors carry code, param and the `client_event_id` of the failed command, configuration errors have their own code, and `session.closed` gives a reason (17 of 20). Commands are matched to acknowledgements by `event_id`, the sideband replays 3 seconds with original event IDs, and stored sessions can be forked to resume after a drop. Session creation has no idempotency key and outbound calls must not be retried (12 of 20). Only `model` is required, the voice defaults to `marin`, and the `openai` SDKs for Python and Node.js have Live resources, with partner integrations for LiveKit and Pipecat (15)." }, "scores": { "a": 64, "b": 76 } }, { "by": 11, "category": "transparency", "leads": "gpt-live", "name": "Transparency \u0026 trust", "reasons": { "a": "Closed model under the AWS Service Terms, with Apache-2.0 SDKs and samples (15). Bedrock stores no inputs or outputs by default and model providers can't see them, Sonic isn't on the abuse-detection page's list of models whose traffic is stored, and section 50.3 doesn't list Bedrock among services whose content improves AWS services, as read for amazon-nova-embeddings on 1 November (22 of 30). Bedrock's lifecycle policy for models launched before 7 September 2026 promises 12 months and a Legacy period of at least 6 months, but the March and May refreshes changed the model in place under the same ID (15 of 20). Regions are listed, with sub-processors not read (12 of 20). Total 64.", "b": "Closed service. The Python SDK is Apache-2.0, and the OpenAPI file and the Live Console sample are MIT. The services agreement is scored as the OpenAI API listing scores it, per that listing's check, since openai.com answered our reader with 403 (15 of 30, was 10, the reading every other OpenAI listing carries). The data controls page, re-read on 1 November, says `/v1/live/sessions` data is not used for training, abuse logs are kept up to 30 days, recordings are stored for 30 days only when `store` is true and storage is enabled, and Zero Data Retention treats `store` as false. It also says there is no public endpoint to delete a stored session. Those are stated conditions, not statements that disagree. The DPA, effective 1 January 2026, commits to return or deletion of customer data on termination, 30 days to object to a new subprocessor, and SCCs with the UK Addendum, and nothing in it conflicts with the guide, per the OpenAI API listing's 4 October check, not re-read on 1 November (openai.com answered 403). The same reading as the other OpenAI listings (30 of 30, was 18). The deprecations page states at least six months' notice for generally available models and lists dated shutdowns (20 of 20). The data-controls guide lists `/v1/live/sessions` for storage and processing in the United States and Europe only, narrower than most OpenAI endpoints, and the subprocessor list, updated 9 July 2026, names third-party subprocessors and OpenAI affiliates with processing countries and a notice form, per the OpenAI API listing's 4 October check. Locations and subprocessors are disclosed, which is what the line scores (20 of 20, was 10). 15 + 30 + 20 + 20 = 85." }, "scores": { "a": 79, "b": 90 } }, { "by": 10, "category": "payments", "leads": "gpt-live", "name": "Payments \u0026 pricing", "reasons": { "a": "No x402, MPP or L402 (0). The Nova and Bedrock pricing pages carry a speech-to-speech table drawn by script, so the per-token prices weren't read and this line scores absent, which is our reader's limit and not the vendor's (0). New accounts get up to $200 in Free Tier credits, and the Free Tier FAQ says most new customers need no payment method, read as half on the other AWS listings (10). A person signs up for an AWS account in a browser (0). Total 10.", "b": "No x402, MPP or L402 in the docs or the OpenAPI file (0 of 40). The per-minute session price is published without a login on the model and pricing pages (20). The model page lists the Free usage tier as unsupported for `gpt-live-1` (0). API keys are created in the platform after a browser sign-in (0)." }, "scores": { "a": 10, "b": 20 } } ], "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Amazon Web Services", "b": "OpenAI", "name": "Vendor" }, { "a": "no (local only)", "b": "https://api.openai.com/v1/live/sessions", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "HTTP", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Proprietary service. The service terms on openai.com were not read. The Python SDK is Apache-2.0, and the OpenAPI description and the OpenAI Live Console sample are MIT", "name": "Licence" }, { "a": "0", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-05-28", "b": "2026-10-31", "name": "Last release" }, { "a": "2026-10-01", "b": "couldn't be read", "name": "Terms last updated" }, { "a": "2026-05-18", "b": "couldn't be read", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "couldn't be read", "name": "Customer content may train models" }, { "a": "yes", "b": "couldn't be read", "name": "Terms restrict automated access" }, { "a": "yes", "b": "couldn't be read", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "couldn't be read", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "couldn't be read", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "3.5/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "GPT-Live scores 70.6 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 6 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability.", "question": "Which is better for AI agents, Amazon Nova 2 Sonic or GPT-Live?" }, { "answer": "Both need an API key.", "question": "Do Amazon Nova 2 Sonic and GPT-Live need an API key?" }, { "answer": "No hosted endpoint is listed for Amazon Nova 2 Sonic. GPT-Live has a hosted endpoint at https://api.openai.com/v1/live/sessions.", "question": "Can an agent call Amazon Nova 2 Sonic and GPT-Live without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 95 against 62" ], "also": null, "goodFor": "Voice agents on AWS, call centres on Amazon Connect, teams that want IAM and in-account data handling.", "slug": "amazon-nova-sonic", "watchFor": "Connections end after 8 minutes, so long calls need the session-continuation pattern" }, { "aheadOn": [ "Schema \u0026 documentation, 87 against 75", "Agent ergonomics, 76 against 64", "Payments \u0026 pricing, 20 against 10", "Maintenance \u0026 community, 82 against 50", "Transparency \u0026 trust, 90 against 79" ], "also": [ "Agent-ready, a grade of BB or better", "A hosted endpoint, with nothing to install" ], "goodFor": "Teams who want a voice front end that keeps talking while a separate backend reasons and runs tools, with WebRTC, WebSocket and SIP from one vendor and a flat per-minute voice price.", "slug": "gpt-live", "watchFor": "The Live component on status.openai.com has data only from 16 October 2026, so the five weeks after general availability have no readable history." } ], "history": { "amazon-nova-sonic": null, "gpt-live": [ { "causes": [ "correction" ], "date": "2026-11-01", "delta": 3.7, "from": 66.9, "fromGrade": "B", "to": 70.6, "toGrade": "BB" }, { "causes": [ "method" ], "date": "2026-10-27", "delta": 0.1, "from": 66.8, "fromGrade": "B", "to": 66.9, "toGrade": "B" } ] }, "job": { "capability": "voice.agent", "name": "Voice agents" }, "others": [ { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-assemblyai-voice-agent.json", "title": "Amazon Nova 2 Sonic vs AssemblyAI Voice Agent API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-assemblyai-voice-agent" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bland-ai.json", "title": "Amazon Nova 2 Sonic vs Bland AI API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bland-ai" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bolna.json", "title": "Amazon Nova 2 Sonic vs Bolna API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bolna" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-deepgram-voice-agent.json", "title": "Amazon Nova 2 Sonic vs Deepgram Voice Agent API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-deepgram-voice-agent" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-elevenlabs-agents.json", "title": "Amazon Nova 2 Sonic vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-fone-me.json", "title": "Amazon Nova 2 Sonic vs fone.me", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-fone-me" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gemini-live.json", "title": "Amazon Nova 2 Sonic vs Gemini Live API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gemini-live" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-harmony-ai.json", "title": "Amazon Nova 2 Sonic vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-hume-evi.json", "title": "Amazon Nova 2 Sonic vs Hume EVI (Empathic Voice Interface)", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-hume-evi" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-inworld-realtime.json", "title": "Amazon Nova 2 Sonic vs Inworld Realtime API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-inworld-realtime" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.json", "title": "Amazon Nova 2 Sonic vs LiveKit Agents", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-openai-realtime.json", "title": "Amazon Nova 2 Sonic vs OpenAI Realtime API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-openai-realtime" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat.json", "title": "Amazon Nova 2 Sonic vs Pipecat", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-placecall.json", "title": "Amazon Nova 2 Sonic vs PlaceCall", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-placecall" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-retell-ai.json", "title": "Amazon Nova 2 Sonic vs Retell AI API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-retell-ai" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-rime-prism.json", "title": "Amazon Nova 2 Sonic vs Rime Prism", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-synthflow.json", "title": "Amazon Nova 2 Sonic vs Synthflow API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-synthflow" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-ultravox.json", "title": "Amazon Nova 2 Sonic vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-ultravox" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vaani-voice.json", "title": "Amazon Nova 2 Sonic vs Vaani Developer Platform", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vaani-voice" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vapi.json", "title": "Amazon Nova 2 Sonic vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vocily.json", "title": "Amazon Nova 2 Sonic vs Vocily AI", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vogent.json", "title": "Amazon Nova 2 Sonic vs Vogent API", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-gpt-live.json", "title": "AssemblyAI Voice Agent API vs GPT-Live", "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/bland-ai-vs-gpt-live.json", "title": "Bland AI API + MCP vs GPT-Live", "url": "https://www.anchorterminal.com/compare/bland-ai-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/bolna-vs-gpt-live.json", "title": "Bolna API + MCP vs GPT-Live", "url": "https://www.anchorterminal.com/compare/bolna-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-gpt-live.json", "title": "Deepgram Voice Agent API vs GPT-Live", "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live.json", "title": "ElevenLabs Agents API + MCP vs GPT-Live", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/fone-me-vs-gpt-live.json", "title": "fone.me vs GPT-Live", "url": "https://www.anchorterminal.com/compare/fone-me-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/gemini-live-vs-gpt-live.json", "title": "Gemini Live API vs GPT-Live", "url": "https://www.anchorterminal.com/compare/gemini-live-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai.json", "title": "GPT-Live vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-inworld-realtime.json", "title": "GPT-Live vs Inworld Realtime API", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-inworld-realtime" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-placecall.json", "title": "GPT-Live vs PlaceCall", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-placecall" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-synthflow.json", "title": "GPT-Live vs Synthflow API + MCP", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-synthflow" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-vaani-voice.json", "title": "GPT-Live vs Vaani Developer Platform", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-vaani-voice" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-vocily.json", "title": "GPT-Live vs Vocily AI", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-vogent.json", "title": "GPT-Live vs Vogent API", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-hume-evi.json", "title": "GPT-Live vs Hume EVI (Empathic Voice Interface)", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-hume-evi" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-livekit-agents.json", "title": "GPT-Live vs LiveKit Agents", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-livekit-agents" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-openai-realtime.json", "title": "GPT-Live vs OpenAI Realtime API", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-openai-realtime" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-pipecat.json", "title": "GPT-Live vs Pipecat", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-pipecat" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-retell-ai.json", "title": "GPT-Live vs Retell AI API + MCP", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-retell-ai" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism.json", "title": "GPT-Live vs Rime Prism", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-ultravox.json", "title": "GPT-Live vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-ultravox" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-vapi.json", "title": "GPT-Live vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat-phonellm.json", "title": "Amazon Nova 2 Sonic vs Pipecat PhoneLLM", "url": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat-phonellm" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-pipecat-phonellm.json", "title": "GPT-Live vs Pipecat PhoneLLM", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-pipecat-phonellm" } ], "panel": null, "scores": [ { "amazon-nova-sonic": 95, "by": 33, "edge": "amazon-nova-sonic", "gpt-live": 62, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "amazon-nova-sonic": 75, "by": 12, "edge": "gpt-live", "gpt-live": 87, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "amazon-nova-sonic": 64, "by": 12, "edge": "gpt-live", "gpt-live": 76, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "amazon-nova-sonic": 77, "by": 4, "edge": "gpt-live", "gpt-live": 81, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "amazon-nova-sonic": 10, "by": 10, "edge": "gpt-live", "gpt-live": 20, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "amazon-nova-sonic": 50, "by": 32, "edge": "gpt-live", "gpt-live": 82, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "amazon-nova-sonic": 79, "by": 11, "edge": "gpt-live", "gpt-live": 90, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "GPT-Live scores 70.6 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 6 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability. Both do voice agents.", "tasks": null, "tutorials": [], "verdicts": { "amazon-nova-sonic": "Nova 2 Sonic runs speech-to-speech conversations with asynchronous tools on Bedrock, with IAM scoping, no default storage of inputs and a 99.9 per cent SLA. Sessions cut off at 8 minutes, the Python SDK is pre-alpha, and the event payloads have no schema file. Prices are in a script-drawn table we couldn't read.", "gpt-live": "A generally available full-duplex voice API with a typed OpenAPI contract, published concurrency limits and a flat $0.05 a minute for the voice session. Its status component dates from 16 October, so most of its life has no incident history, the Free tier is excluded, and a sideband event was renamed on 28 October without notice." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live", "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live.min.md" }, "markdown": "GPT-Live scores 70.6 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 6 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability. Both do voice agents.\n\n- Amazon Nova 2 Sonic: grade B, 67.6/100, rank #314 of 1486. Markdown https://www.anchorterminal.com/tools/amazon-nova-sonic.md · JSON https://www.anchorterminal.com/api/v1/tools/amazon-nova-sonic.json\n- GPT-Live: grade BB, 70.6/100, rank #191 of 1486. Markdown https://www.anchorterminal.com/tools/gpt-live.md · JSON https://www.anchorterminal.com/api/v1/tools/gpt-live.json\n- Best conversational voice-agent APIs: https://www.anchorterminal.com/best/voice-agents/index.md\n- All 518 voice agents comparisons: https://www.anchorterminal.com/compare/voice-agents/index.md\n\n## Which one, for what\n\n### Amazon Nova 2 Sonic (B)\n\nGood for: Voice agents on AWS, call centres on Amazon Connect, teams that want IAM and in-account data handling.\n\nAhead on:\n- Reliability, 95 against 62\n\nWatch for: Connections end after 8 minutes, so long calls need the session-continuation pattern\n\n### GPT-Live (BB)\n\nGood for: Teams who want a voice front end that keeps talking while a separate backend reasons and runs tools, with WebRTC, WebSocket and SIP from one vendor and a flat per-minute voice price.\n\nAhead on:\n- Schema \u0026 documentation, 87 against 75\n- Agent ergonomics, 76 against 64\n- Payments \u0026 pricing, 20 against 10\n- Maintenance \u0026 community, 82 against 50\n- Transparency \u0026 trust, 90 against 79\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- A hosted endpoint, with nothing to install\n\nWatch for: The Live component on status.openai.com has data only from 16 October 2026, so the five weeks after general availability have no readable history.\n\n\n## Why the edge\n\n### Reliability: Amazon Nova 2 Sonic +33\n\n- Amazon Nova 2 Sonic (95): Hosted reading. AWS Health Dashboard with per-service, per-Region history (20). The dashboard history file (newest event 30 October 2026) lists no Bedrock event in the 90 days from 8 August, and the 3 September us-west-2 event names STS, Connect and IAM Identity Center, not Bedrock. The public dashboard records broad events only, so 25 of 30, as amazon-nova-embeddings was read. Quotas published, 20 concurrent requests per Region, not adjustable (15). The stream API lists `ThrottlingException` (429), `ServiceUnavailableException` (503), `ModelTimeoutException` (408) and `ModelStreamErrorException` (424), Bedrock's troubleshooting guide advises backoff with jitter, and the 8-minute connection limit comes with a session-continuation sample (15). Bedrock's SLA of 99.9 per cent a month per Region for model APIs, as read for amazon-nova-embeddings on 1 November (10). Generally available since 2 December 2025 (10). 20 + 25 + 15 + 15 + 10 + 10 = 95.\n- GPT-Live (62): Graded as a hosted API. status.openai.com has a Live component under APIs, with data available from 19:53 UTC on 16 October 2026, five weeks after general availability (20). Re-read on 1 November. The feed (102 items) names Live in one incident, the 21 October degraded performance across ChatGPT, Codex and the APIs, where the incident page has Live degraded from 02:26 to 02:48 UTC, 22 minutes and minor. The API-wide majors of 17 and 29 September fall before the component existed, so whether they touched Live can't be read, and most of the window since general availability on 10 September has no readable history. An unreadable window isn't credited (5 of 30). The model page, re-read on 1 November, publishes concurrent session limits per tier, 50 on Build, 300 on Launch and 500 on Grow, and the SIP guide gives a 3-minute ringing limit and a 2-hour call limit (15). The OpenAPI file lists 429 and 503 on session creation and the rate limits guide documents `Retry-After` and backoff. Safe-retry guidance is explicit (check an action's outcome before retrying, deduplicate webhooks and events by ID, never retry an outbound call after a timeout), but session creation has no idempotency key (12 of 15). No SLA was found in the developer docs (0). Generally available since 10 September 2026 (10). Native Decisions delegation rests on the Decisions API, generally available since 22 October. 20 + 5 + 15 + 12 + 0 + 10 = 62.\n\n### Maintenance \u0026 community: GPT-Live +32\n\n- Amazon Nova 2 Sonic (50): Read as a model. The newest dated change is the May 2026 refresh, completed on 28 May, 162 days before this check (10). No Sonic release note or document history entry in the 90 days from 8 August. The pre-alpha Python SDK shipped 0.9.0, 0.10.0, 0.11.0 and 0.12.0 in the window, counted half (10 of 20). Release notes, document history, re:Post and AWS Support (10 of 15). The JavaScript Bedrock runtime client is current at 3.1163.0, while the Python route is pre-alpha (10 of 15). The SDKs ship on AWS's release train; CI not read (10). Total 50.\n- GPT-Live (82): The last dated changelog entry tagged `v1/live/sessions` is still 16 October 2026, and the Live contract changed again after it, with the Decisions inputs revised on 24 October and a SIP DTMF command added on 28 October in the OpenAPI file, shipped in the Python SDK 3.42.0 on 31 October (30). Three changelog entries in the last 90 days, on 10 September, 15 October and 16 October (20). Closed service with a changelog updated several times a week and a community forum and Discord linked from the docs, which we did not test (10 of 15). Current official SDKs, with `openai` for Python at 3.42.0 on 31 October 2026 and Live changes in several releases since 10 September (15). The SDK is Apache-2.0 and released often. Its CI results were not read (7 of 10). 30 + 20 + 10 + 15 + 7 = 82.\n\n### Schema \u0026 documentation: GPT-Live +12\n\n- Amazon Nova 2 Sonic (75): The Bedrock service model types `InvokeModelWithBidirectionalStream`, but the Sonic events inside it (session, prompt, content, tool and usage events) are JSON payloads documented only in the guide, with no schema file (12 of 25). llms.txt and Markdown copies of the Nova 2 guide (10). Guides on the event lifecycle, barge-in, turn-taking, async tools and chat history say when and how to use each (16 of 20). Event fields are documented as JSON examples and tables, not typed schemas (10 of 15). Sample repositories in several languages and the API's exceptions with HTTP codes (12 of 15). Release notes and document history, with in-place model refreshes and a versioned model ID (15). Total 75.\n- GPT-Live (87): The OpenAPI 3.1 file in `openai/openai-openapi` (re-read from a clone at its 31 October commit) has seven `/live/sessions` paths and 190 component schemas whose names start with Live by our count, up from the 17 October file with the 24 October revision of Decisions inputs and the 28 October DTMF command, and typed client and server events on the primary and sideband connections. It is not an AsyncAPI document, so the WebSocket channels are described only as event schemas (22 of 25). llms.txt and a Markdown twin of every page (10). The delegation guide has a table of when to choose Responses or client delegation, the connection guides say when to use WebRTC, WebSocket or SIP, and the Decisions guide says when to delegate or react to transcripts (17 of 20). Fields carry enums and limits, such as `delegation.type`, SIP reject codes 300 to 699 and 500-token appends, but `model` also accepts any string and the Live MCP tool schema types only `type` (12 of 15). Python and JavaScript examples on every guide, an `error` event with a documented shape and several named codes, and a table of close reasons. No full catalogue of Live error codes was found, and three JavaScript examples in the Markdown twins are empty (12 of 15). A dated changelog tags entries with `v1/live/sessions`, there is one snapshot, and the deprecated webhook event is named (14 of 15).\n\n### Agent ergonomics: GPT-Live +12\n\n- Amazon Nova 2 Sonic (64): Scored as an API. Responses carry transcripts of both sides and usage events, chat history is capped at 200 KB and can be injected once per session (15 of 25). Output controls are voice, turn-taking sensitivity and text or audio input (12 of 20). Typed exceptions with HTTP codes, while errors inside the event stream are less documented (15 of 20). Asynchronous tool calls let the model keep talking, and AWS samples show how to resume after the 8-minute limit, with nothing on repeating tool side effects after a reconnect (12 of 20). A session needs a sequence of start events before audio. The JavaScript SDK is current, but the Python SDK the quickstart uses is pre-alpha and needs Python 3.12 (10 of 15). Total 64.\n- GPT-Live (76): Scored as a model API. Context is managed by the service in a 128,000-token window with background summaries, startup history is capped at 128 messages and 8,192 tokens, and `session.usage.updated` reports a context `usage_ratio`. The client cannot set its own truncation (20 of 25). There are no lists to page. The WebRTC frontend can be restricted to listed server events, transcripts are optional, and backend `max_output_tokens` is configurable (12 of 20). Errors carry code, param and the `client_event_id` of the failed command, configuration errors have their own code, and `session.closed` gives a reason (17 of 20). Commands are matched to acknowledgements by `event_id`, the sideband replays 3 seconds with original event IDs, and stored sessions can be forked to resume after a drop. Session creation has no idempotency key and outbound calls must not be retried (12 of 20). Only `model` is required, the voice defaults to `marin`, and the `openai` SDKs for Python and Node.js have Live resources, with partner integrations for LiveKit and Pipecat (15).\n\n### Transparency \u0026 trust: GPT-Live +11\n\n- Amazon Nova 2 Sonic (79): Closed model under the AWS Service Terms, with Apache-2.0 SDKs and samples (15). Bedrock stores no inputs or outputs by default and model providers can't see them, Sonic isn't on the abuse-detection page's list of models whose traffic is stored, and section 50.3 doesn't list Bedrock among services whose content improves AWS services, as read for amazon-nova-embeddings on 1 November (22 of 30). Bedrock's lifecycle policy for models launched before 7 September 2026 promises 12 months and a Legacy period of at least 6 months, but the March and May refreshes changed the model in place under the same ID (15 of 20). Regions are listed, with sub-processors not read (12 of 20). Total 64.\n- GPT-Live (90): Closed service. The Python SDK is Apache-2.0, and the OpenAPI file and the Live Console sample are MIT. The services agreement is scored as the OpenAI API listing scores it, per that listing's check, since openai.com answered our reader with 403 (15 of 30, was 10, the reading every other OpenAI listing carries). The data controls page, re-read on 1 November, says `/v1/live/sessions` data is not used for training, abuse logs are kept up to 30 days, recordings are stored for 30 days only when `store` is true and storage is enabled, and Zero Data Retention treats `store` as false. It also says there is no public endpoint to delete a stored session. Those are stated conditions, not statements that disagree. The DPA, effective 1 January 2026, commits to return or deletion of customer data on termination, 30 days to object to a new subprocessor, and SCCs with the UK Addendum, and nothing in it conflicts with the guide, per the OpenAI API listing's 4 October check, not re-read on 1 November (openai.com answered 403). The same reading as the other OpenAI listings (30 of 30, was 18). The deprecations page states at least six months' notice for generally available models and lists dated shutdowns (20 of 20). The data-controls guide lists `/v1/live/sessions` for storage and processing in the United States and Europe only, narrower than most OpenAI endpoints, and the subprocessor list, updated 9 July 2026, names third-party subprocessors and OpenAI affiliates with processing countries and a notice form, per the OpenAI API listing's 4 October check. Locations and subprocessors are disclosed, which is what the line scores (20 of 20, was 10). 15 + 30 + 20 + 20 = 85.\n\n### Payments \u0026 pricing: GPT-Live +10\n\n- Amazon Nova 2 Sonic (10): No x402, MPP or L402 (0). The Nova and Bedrock pricing pages carry a speech-to-speech table drawn by script, so the per-token prices weren't read and this line scores absent, which is our reader's limit and not the vendor's (0). New accounts get up to $200 in Free Tier credits, and the Free Tier FAQ says most new customers need no payment method, read as half on the other AWS listings (10). A person signs up for an AWS account in a browser (0). Total 10.\n- GPT-Live (20): No x402, MPP or L402 in the docs or the OpenAPI file (0 of 40). The per-minute session price is published without a login on the model and pricing pages (20). The model page lists the Free usage tier as unsupported for `gpt-live-1` (0). API keys are created in the platform after a browser sign-in (0).\n\n## Score by category\n\n| Category | Weight | Amazon Nova 2 Sonic | GPT-Live | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 95 | 62 | Amazon Nova 2 Sonic +33 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 87 | GPT-Live +12 |\n| Agent ergonomics | 13% (16.2 this run) | 64 | 76 | GPT-Live +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 77 | 81 | GPT-Live +4 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 20 | GPT-Live +10 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 50 | 82 | GPT-Live +32 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 90 | GPT-Live +11 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **67.6 · B** | **70.6 · BB** | |\n\n## Facts side by side\n\n| Fact | Amazon Nova 2 Sonic | GPT-Live |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Amazon Web Services | OpenAI |\n| Hosted endpoint | no (local only) | `https://api.openai.com/v1/live/sessions` |\n| Transports | HTTP | HTTP |\n| Auth | API key | API key |\n| Pricing | Pay per use | Pay per use |\n| x402 | no | no |\n| Licence | none | Proprietary service. The service terms on openai.com were not read. The Python SDK is Apache-2.0, and the OpenAPI description and the OpenAI Live Console sample are MIT |\n| Tools exposed | 0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-05-28 | 2026-10-31 |\n| Terms last updated | 2026-10-01 | couldn't be read |\n| Privacy policy last updated | 2026-05-18 | couldn't be read |\n| Customer content may train models | yes, with an opt-out | couldn't be read |\n| Terms restrict automated access | yes | couldn't be read |\n| Terms restrict benchmarking | yes | couldn't be read |\n| Terms or service can change without notice | yes | couldn't be read |\n| Arbitration or class-action waiver | not found in the text | couldn't be read |\n| Agent reviews | none | 3.5/5 (4) |\n\n## How the scores have moved\n\n### Amazon Nova 2 Sonic\n\nNo score change since it was listed.\n\n### GPT-Live\n\n- +3.7 on 1 November 2026 (B to BB): correction\n- +0.1 on 27 October 2026: checklist\n\n## Verdicts\n\n**Amazon Nova 2 Sonic.** Nova 2 Sonic runs speech-to-speech conversations with asynchronous tools on Bedrock, with IAM scoping, no default storage of inputs and a 99.9 per cent SLA. Sessions cut off at 8 minutes, the Python SDK is pre-alpha, and the event payloads have no schema file. Prices are in a script-drawn table we couldn't read.\n\n**GPT-Live.** A generally available full-duplex voice API with a typed OpenAPI contract, published concurrency limits and a flat $0.05 a minute for the voice session. Its status component dates from 16 October, so most of its life has no incident history, the Free tier is excluded, and a sideband event was renamed on 28 October without notice.\n\n## Before you call either\n\n### Amazon Nova 2 Sonic\n\n1. Plan a reconnect before 8 minutes and replay chat history (up to 200 KB) at the start of the new session\n2. Send session, prompt and content start events in order before any audio\n3. Make tool calls safe to repeat, since a reconnect can replay them\n4. Back off on `ThrottlingException` and stay within 20 concurrent sessions per Region\n5. Use the polyglot voices TIFFANY or MATTHEW when callers may switch language\n\n### GPT-Live\n\n1. Create sessions on a server with the project API key. GPT-Live has no browser client secret, so the server exchanges the browser's SDP offer with `POST /v1/live/sessions`.\n2. Choose `delegation.type` at creation. Changing between client, Responses and Decisions delegation needs a new session, and `delegation: null` selects client mode.\n3. After `session.started`, listen for `error` with code `responses_validation_failed`. Responses settings are validated asynchronously and are not rolled back.\n4. Do not retry an outbound SIP `POST /v1/live/sessions` after a timeout. Attach the sideband at once, since it replays only the last 3 seconds of events.\n5. Keep the transport open until `session.closed` to read the final `usage.seconds`. A WebRTC session bills 15 seconds at creation, credited once it runs.\n6. On SIP calls, send keypresses with `transport.dtmf.send` on the sideband and wait for `transport.dtmf.sent`. Before 28 October that delivery event was named `transport.dtmf.send`.\n\n## Questions\n\n### Which is better for AI agents, Amazon Nova 2 Sonic or GPT-Live?\n\nGPT-Live scores 70.6 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 6 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability.\n\n### Do Amazon Nova 2 Sonic and GPT-Live need an API key?\n\nBoth need an API key.\n\n### Can an agent call Amazon Nova 2 Sonic and GPT-Live without installing anything?\n\nNo hosted endpoint is listed for Amazon Nova 2 Sonic. GPT-Live has a hosted endpoint at https://api.openai.com/v1/live/sessions.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-live.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"amazon-nova-sonic\", \"b\": \"gpt-live\"}`. From a terminal: `anchor compare amazon-nova-sonic gpt-live`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amazon-nova-sonic.json and https://www.anchorterminal.com/api/v1/tools/gpt-live.json\n\n## Other comparisons with Amazon Nova 2 Sonic or GPT-Live\n\n- [Amazon Nova 2 Sonic vs AssemblyAI Voice Agent API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-assemblyai-voice-agent.md)\n- [Amazon Nova 2 Sonic vs Bland AI API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bland-ai.md)\n- [Amazon Nova 2 Sonic vs Bolna API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-bolna.md)\n- [Amazon Nova 2 Sonic vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-deepgram-voice-agent.md)\n- [Amazon Nova 2 Sonic vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-elevenlabs-agents.md)\n- [Amazon Nova 2 Sonic vs fone.me](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-fone-me.md)\n- [Amazon Nova 2 Sonic vs Gemini Live API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gemini-live.md)\n- [Amazon Nova 2 Sonic vs Harmony.ai](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-harmony-ai.md)\n- [Amazon Nova 2 Sonic vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-hume-evi.md)\n- [Amazon Nova 2 Sonic vs Inworld Realtime API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-inworld-realtime.md)\n- [Amazon Nova 2 Sonic vs LiveKit Agents](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.md)\n- [Amazon Nova 2 Sonic vs OpenAI Realtime API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-openai-realtime.md)\n- [Amazon Nova 2 Sonic vs Pipecat](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat.md)\n- [Amazon Nova 2 Sonic vs PlaceCall](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-placecall.md)\n- [Amazon Nova 2 Sonic vs Retell AI API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-retell-ai.md)\n- [Amazon Nova 2 Sonic vs Rime Prism](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-rime-prism.md)\n- [Amazon Nova 2 Sonic vs Synthflow API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-synthflow.md)\n- [Amazon Nova 2 Sonic vs Ultravox Realtime API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-ultravox.md)\n- [Amazon Nova 2 Sonic vs Vaani Developer Platform](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vaani-voice.md)\n- [Amazon Nova 2 Sonic vs Vapi API + MCP](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vapi.md)\n- [Amazon Nova 2 Sonic vs Vocily AI](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vocily.md)\n- [Amazon Nova 2 Sonic vs Vogent API](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-vogent.md)\n- [AssemblyAI Voice Agent API vs GPT-Live](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-gpt-live.md)\n- [Bland AI API + MCP vs GPT-Live](https://www.anchorterminal.com/compare/bland-ai-vs-gpt-live.md)\n- [Bolna API + MCP vs GPT-Live](https://www.anchorterminal.com/compare/bolna-vs-gpt-live.md)\n- [Deepgram Voice Agent API vs GPT-Live](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-gpt-live.md)\n- [ElevenLabs Agents API + MCP vs GPT-Live](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live.md)\n- [fone.me vs GPT-Live](https://www.anchorterminal.com/compare/fone-me-vs-gpt-live.md)\n- [Gemini Live API vs GPT-Live](https://www.anchorterminal.com/compare/gemini-live-vs-gpt-live.md)\n- [GPT-Live vs Harmony.ai](https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai.md)\n- [GPT-Live vs Inworld Realtime API](https://www.anchorterminal.com/compare/gpt-live-vs-inworld-realtime.md)\n- [GPT-Live vs PlaceCall](https://www.anchorterminal.com/compare/gpt-live-vs-placecall.md)\n- [GPT-Live vs Synthflow API + MCP](https://www.anchorterminal.com/compare/gpt-live-vs-synthflow.md)\n- [GPT-Live vs Vaani Developer Platform](https://www.anchorterminal.com/compare/gpt-live-vs-vaani-voice.md)\n- [GPT-Live vs Vocily AI](https://www.anchorterminal.com/compare/gpt-live-vs-vocily.md)\n- [GPT-Live vs Vogent API](https://www.anchorterminal.com/compare/gpt-live-vs-vogent.md)\n- [GPT-Live vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/gpt-live-vs-hume-evi.md)\n- [GPT-Live vs LiveKit Agents](https://www.anchorterminal.com/compare/gpt-live-vs-livekit-agents.md)\n- [GPT-Live vs OpenAI Realtime API](https://www.anchorterminal.com/compare/gpt-live-vs-openai-realtime.md)\n- [GPT-Live vs Pipecat](https://www.anchorterminal.com/compare/gpt-live-vs-pipecat.md)\n- [GPT-Live vs Retell AI 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"https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run", "terms": "https://www.anchorterminal.com/terms/#data" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "Amazon Nova 2 Sonic vs GPT-Live", "url": "" } ], "description": "GPT-Live scores 70.6 (BB) to Amazon Nova 2 Sonic's 67.6 (B) for voice agents. 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