{ "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": "LiveKit Agents scores 72.7 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 5 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability and security \u0026 auth.", "b": { "slug": "livekit-agents", "name": "LiveKit Agents", "vendor": "LiveKit Incorporated", "vendorUrl": "https://livekit.com", "kind": "framework", "category": "voice-agents", "summary": "LiveKit Agents is LiveKit's open-source Python and Node.js framework for realtime voice and video agents that join LiveKit rooms, with STT, LLM, TTS and realtime-model plugins, turn detection, MCP tools and telephony through LiveKit SIP.", "url": "https://www.anchorterminal.com/tools/livekit-agents", "markdownUrl": "https://www.anchorterminal.com/tools/livekit-agents.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/livekit-agents.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/livekit-agents.json", "dns": "livekit-agents.grade.anchorterminal.com", "repo": "https://github.com/livekit/agents", "license": "Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms", "transports": [], "packages": [ { "registry": "pypi", "name": "livekit-agents" }, { "registry": "npm", "name": "@livekit/agents" } ], "auth": "api-key", "authNotes": "The agent server connects to a LiveKit server with `LIVEKIT_URL`, `LIVEKIT_API_KEY` and `LIVEKIT_API_SECRET`. The key and secret sign JWT access tokens with room grants and a lifetime the issuer sets. Model plugins take each provider's own key, or LiveKit Inference uses the LiveKit Cloud project's key and secret. A self-hosted LiveKit server needs no LiveKit account, and a LiveKit Cloud project needs a browser sign-up.", "pricing": "free", "pricingNotes": "The framework is free under Apache-2.0, and you pay for models and for hosting. LiveKit Cloud's Build plan is $0 with no card, with 1,000 agent session minutes, 5 concurrent sessions and $2.50 of LiveKit Inference credit, as a hard cap. Ship starts at $50 a month and Scale at $500, with agent session minutes at $0.01 past the allowance and LiveKit Inference models billed per minute, per character or per token (https://livekit.com/pricing.md, checked 2026-10-17).", "priceSummary": "Free · OSS", "where": "library", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the repository source, the docs (llms-full.txt) or the pricing page, checked 2026-10-17.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": 819555, "pypiWeekly": 1055589, "asOf": "2026-10-17" }, "docsUrl": "https://docs.livekit.io/agents/", "llmsTxt": "https://docs.livekit.io/llms.txt", "capabilities": [ "voice.agent", "voice.pipeline", "voice.speech-to-speech", "voice.tools", "voice.telephony", "agent.mcp-client", "agent.multi-agent" ], "tags": [ "framework", "official", "python", "typescript", "open-source", "apache-2.0", "self-hosted", "llms-txt", "pipeline", "speech-to-speech", "webrtc", "sip", "no-card" ], "lastRelease": "2026-10-28", "graded": true, "anchor": { "graded": true, "score": 72.7, "grade": "BB", "agentReady": true, "rank": 119, "ranked": true, "rankOf": 1486, "categoryRank": 1, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 80, "maintenance": 87, "payments": 60, "reliability": 67, "schema": 81, "security": 62, "transparency": 82 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-11-01" }, "negative": 0, "verdict": "An Apache-2.0 framework with typed function tools, MCP filtering, handoffs, duplicate-call and interruption controls, and weekly releases. It needs a LiveKit server, and the default turn detector's models are under a proprietary licence limited to this framework. No approval primitive or prompt-injection guidance was found.", "bestFor": "Teams writing their own voice agents in Python or Node.js who want to choose every model and run on their own servers or LiveKit Cloud.", "strengths": [ "Apache-2.0 Python and Node.js packages, with 18 Python releases in the 90 days to 1 November 2026", "MCP client with `allowed_tools`, `filter_tools()` and `tool_result_resolver` to limit tools and trim results (Python only)", "Voice-specific tool controls. `disallow_interruptions()`, four `on_duplicate` modes, and interrupted tools keep their result so the model doesn't call them again", "81 provider plugin packages, or LiveKit Inference model strings with one LiveKit key and zero data retention under LiveKit's terms", "Runs entirely self-hosted, with the local `v1-mini` turn detector and no LiveKit account" ], "weaknesses": [ "The turn-detector models are under a proprietary licence that forbids use outside LiveKit Agents and training other models on their output", "No CHANGELOG file, release notes only on GitHub, and 2.0.0b1 tagged on 12 October 2026 with no 2.0 migration guide by 1 November", "The quickstart still calls the deprecated `cli.run_app`, and the llms.txt link to the Python reference's Markdown returns 404", "No built-in approval step for tool calls, and no prompt-injection guidance found in the docs", "In `dev` mode with LiveKit Cloud credentials, the default turn detector streams user audio to LiveKit Inference" ], "agentNotes": [ "Set `LIVEKIT_URL`, `LIVEKIT_API_KEY` and `LIVEKIT_API_SECRET` before starting. Every agent joins a LiveKit room, on LiveKit Cloud or a self-hosted server", "Pass `inference.TurnDetector(version=\"v1-mini\")` to keep turn detection local, and read `MODEL_LICENSE` before using LiveKit's turn models anywhere but LiveKit Agents", "Pass `record=False`, or a dict per category, to `session.start()` if audio, transcripts, traces and logs must not reach LiveKit Cloud", "Call `context.disallow_interruptions()` first in tools that write, and set `on_duplicate=\"reject\"` or `\"confirm\"`. Duplicates are matched by tool name only, not arguments", "Wrap MCP servers in `mcp.MCPToolset` with `allowed_tools` (Python only). The `mcp_servers` parameter is deprecated" ], "metrics": { "kind": "library", "measured": false }, "reviewCount": 4, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 72.7 } ], "editorialScores": { "ergonomics": 80, "maintenance": 87, "payments": 60, "reliability": 67, "schema": 81, "security": 62, "transparency": 68 }, "provenanceScore": 96, "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": "pip install \"livekit-agents[openai,deepgram,cartesia]\" # or: npm i @livekit/agents" }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/livekit-agents" }, "sameCompany": [ "livekit-telephony" ], "area": "voice", "unitPrices": [ { "item": "LiveKit Cloud agent session", "unit": "call-minute", "usd": 0.01, "note": "past the Ship or Scale allowance, models and telephony extra" }, { "item": "LiveKit Cloud agent session recording", "unit": "audio-minute", "usd": 0.005, "note": "past the Ship or Scale allowance" }, { "item": "LiveKit Cloud Ship plan", "unit": "month", "usd": 50, "note": "starting price" }, { "item": "LiveKit Cloud Scale plan", "unit": "month", "usd": 500, "note": "starting price" } ], "provenance": { "legalEntity": "LiveKit Incorporated", "domain": "livekit.com", "domainRegistered": "2000-02-24", "endpointOnVendorDomain": null, "terms": "https://livekit.com/legal/terms-of-service", "privacy": "https://livekit.com/legal/privacy-policy", "statusPage": "https://status.livekit.io", "changelog": "https://github.com/livekit/agents/releases", "securityTxt": "valid", "checked": "2026-10-17", "notes": [ "The framework is Apache-2.0 software the owner runs. The terms (last updated 6 October 2026) govern LiveKit Cloud's Build, Ship and Scale plans, including LiveKit Inference and Agent Observability, between the customer and LiveKit Incorporated of San Francisco.", "The privacy policy (last updated 15 October 2026) covers LiveKit's website and says it does not apply where LiveKit processes data for customers. The sub-processor list is dated 10 September 2026.", "livekit.io answers 308 to livekit.com. RDAP at Verisign gives livekit.com a registration date of 24 February 2000, before the company existed.", "livekit.com/.well-known/security.txt names a security contact, a PGP key and the disclosure policy at https://livekit.com/security/policy, with no Expires field. The repository has no SECURITY.md.", "No CHANGELOG file in the repository. Release notes are on GitHub releases, which couldn't be read from our session. The status page covers LiveKit Cloud, not the framework.", "WebFetch refused every page in this session, so first-hand pages were read with curl after checking each host's robots.txt. status.livekit.io disallows /api/, so its history page was read instead." ], "score": 96 }, "requirements": { "setupChecked": true, "complianceChecked": true, "card": "no", "freeTier": true, "minutes": 10, "credential": "api-key", "hosting": [ "self-hosted" ], "euResidency": "yes", "trainsOnData": "no", "zeroRetention": "yes", "certifications": [ "SOC 2 Type II" ], "dpa": true, "selfHost": "yes" }, "pageJsonUrl": "https://www.anchorterminal.com/tools/livekit-agents.json", "live": { "slug": "livekit-agents", "vendorStatus": { "page": "https://status.livekit.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-11-07T18:21:20.463121047Z" }, "versions": [ { "registry": "github", "name": "livekit/agents", "version": "livekit-agents@1.8.11", "released": "2026-11-05", "seenAt": "2026-11-06T23:40:37.132923032Z" }, { "registry": "npm", "name": "@livekit/agents", "version": "1.9.5", "seenAt": "2026-11-06T23:40:36.914907666Z" }, { "registry": "pypi", "name": "livekit-agents", "version": "1.8.11", "released": "2026-11-05", "seenAt": "2026-11-06T23:40:32.785005332Z" } ], "githubStars": 15117, "npmWeekly": 1270587, "pypiWeekly": 1236823, "securityTxt": { "url": "https://livekit.com/.well-known/security.txt", "state": "valid", "checkedAt": "2026-11-07T16:00:32.805462262Z" }, "llmsTxt": { "url": "https://docs.livekit.io/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-11-07T15:32:53.083455332Z" }, "domain": { "domain": "livekit.com", "registered": "2000-02-24", "source": "https://rdap.verisign.com/com/v1/domain/livekit.com", "checkedAt": "2026-11-01T14:09:57.960731673Z" }, "pages": [ { "url": "https://livekit.com/pricing.md", "kind": "pricing", "status": 200, "checkedAt": "2026-11-07T14:13:23.712103099Z", "changedAt": "2026-11-05T12:36:43.160261562Z", "fingerprint": "358457370932" }, { "url": "https://livekit.com/legal/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-11-07T14:13:19.609646316Z", "changedAt": "2026-11-07T14:13:19.609646316Z", "fingerprint": "3f7df69ee098" }, { "url": "https://livekit.com/legal/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-11-07T14:13:21.831542256Z", "changedAt": "2026-11-05T12:36:41.144304081Z", "fingerprint": "6e0fec9c8134" } ], "github": { "repo": "livekit/agents", "checkedAt": "2026-11-02T09:01:09.273469862Z", "stars": 15048, "archived": false, "issuesEnabled": true, "pushedAt": "2026-11-02T08:26:10Z", "openIssues": 250, "openPRs": 635, "issuesOpened90d": 274, "issuesClosed90d": 240, "prsMerged90d": 652, "ci": { "branch": "main", "runs": 50, "success": 33, "failure": 17, "other": 0, "latest": "success", "latestAt": "2026-11-02T08:27:09Z" }, "advisories": [ { "ghsa": "GHSA-q77r-q2p5-68vf", "severity": "medium", "published": "2026-08-21T22:37:22Z" } ], "replies": { "sampled": 25, "unanswered": 18, "medianDays": 1.8 } }, "updatedAt": "2026-11-07T18:21:20.463121047Z" } }, "edges": [ { "by": 50, "category": "payments", "leads": "livekit-agents", "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 (0 of 40). Read with the rule for open-source software that has a paid hosted option. LiveKit Cloud publishes per-minute prices for agent sessions and recordings and per-unit prices for every LiveKit Inference model without a login (20). The Apache-2.0 packages install with no card, and LiveKit Cloud's Build plan is $0 with no card (20). The framework and a LiveKit server can both run self-hosted with no account or sign-up (20)." }, "scores": { "a": 10, "b": 60 } }, { "by": 37, "category": "maintenance", "leads": "livekit-agents", "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": "`livekit-agents` 1.8.10 tagged on 28 October 2026, after 1.8.9 on 23 October (30). 18 tagged releases in the 90 days to 1 November, from 1.6.8 on 3 August to 1.8.10, counted from the repository's tags since PyPI didn't answer from our shell on 1 November, and `@livekit/agents` 1.9.4 (24 October) and 1.9.5 (28 October) in livekit/agents-js (20). Issue and pull request reply times weren't read, because GitHub's pages answer 403, and the earlier figures, taken from a third-party copy of GitHub data, are struck. In the clone, 147 of the 200 newest commits (11 to 31 October) came from about 80 authors with addresses outside livekit.io, bots aside, and every one of the 200 landed as a numbered pull request. CODEOWNERS sends every change to the agent-devs team, a workflow requests that team's review on pull requests from the repository's own branches, and the issue form points questions to LiveKit's community forum, with a Slack linked from the README (15 of 25). Python 1.8.10 and Node.js 1.9.5 were both tagged on 28 October (15). Renovate, a uv lockfile that holds new dependencies back seven days, security bumps of aiohttp (22 October) and nltk (27 October), pinned actions and CI on every push, with the pass state unconfirmed (7 of 10). 30 + 20 + 15 + 15 + 7 = 87." }, "scores": { "a": 50, "b": 87 } }, { "by": 28, "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 framework with the local-software lines, since LiveKit Cloud is optional and not graded. Official packages on PyPI (Python 3.10 to 3.14 declared) and npm (Node.js 20 or later per the docs) (20). Public workflows run on every push to main and on pull requests. Unit tests on Linux with Python 3.12 over 310 test files on 1 November, ruff, and mypy on Python 3.10 and 3.13, with a small blockguard suite on Linux, macOS and Windows. GitHub's pages and API weren't readable from our session, so a passing main is not confirmed (15 of 25). Open issues and reply times weren't read, because GitHub's pages answer 403, and the earlier issue figures, taken from a third-party copy of GitHub data, are struck. In a clone of main, the 200 newest commits run from 11 to 31 October 2026 and 104 of them are fixes, among them an Inference STT socket that hung when silently dropped (#8023) and an avatar plugin's error handler that crashed (#7498). None names the issue it closes and there is no changelog, so whether reported crashes and regressions get handled can't be seen (10 of 25). No CHANGELOG file. Release notes are on GitHub, which we couldn't read, and the repository's release-notes script asks for Breaking changes and Security sections. Migration guides exist for 0.x to 1.0, AGENTS.md makes patch bumps the default, and 2.0.0b1 was tagged on 12 October and the docs' migration guides still stop at Python 0.x to 1.0 and Node.js 1.x to 1.5 on 1 November (7 of 15). 1.8.10, stable since 1.0 (15)." }, "scores": { "a": 95, "b": 67 } }, { "by": 16, "category": "ergonomics", "leads": "livekit-agents", "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": "Framework reading. An MCP server is about ten lines with `mcp.MCPToolset`, with `allowed_tools`, `filter_tools()` and a `tool_result_resolver` to trim results before they reach the model, but Python only (20 of 25). Tools can be added, removed or replaced per agent and per state, flags such as `IGNORE_ON_ENTER` hide a tool at the greeting, and handoffs swap the active toolset (16 of 20). `ToolError` returns a message the model can act on, invalid arguments come back as a `ToolError` naming the tool, and by default a session closes only after more than three unrecoverable STT, LLM or TTS errors of one kind (17 of 20). Interrupted tools finish in the background and keep their result in history, `disallow_interruptions()` protects tools that write, and `on_duplicate` can reject, replace or confirm a second call. Duplicates are matched by tool name only, and there are no idempotency keys (14 of 20). `AgentSession` supplies VAD and a turn detector by default and LiveKit Inference takes model strings with one key, in Python and Node.js, but every agent needs a LiveKit server and three environment variables (13 of 15)." }, "scores": { "a": 64, "b": 80 } }, { "by": 15, "category": "security", "leads": "amazon-nova-sonic", "name": "Security \u0026 auth", "reasons": { "a": "SigV4 with IAM roles and temporary credentials scoped per model ARN, as the Sonic quickstart signs (30). Tools run in the client, so side effects are the developer's to approve, and IAM can restrict which models a role invokes, with no approval step in the API (12 of 20). The model listens to callers and acts on tool results, and no prompt-injection guidance was found in the Sonic guide (5 of 15). CloudTrail logs Bedrock API calls, read as amazon-nova-embeddings was (12 of 15). VDP on HackerOne, Bedrock in SOC scope and a valid security.txt on aws.amazon.com, with no paid bounty, as on the other AWS listings (18 of 20). Total 77.", "b": "Framework reading. Agents authenticate to a LiveKit server with an API key and secret that sign JWT access tokens with room grants and a lifetime. No analytics calls were found in the source. Uploads to LiveKit Cloud happen only when the agent connects to LiveKit Cloud media servers and the project enables Agent Observability, which the terms call a capability the customer elects to enable. `record` then defaults to the project setting, and since 23 October (1.8.9) the recording header also carries a session summary without chat history or events, with `record=False` or per-category opt-outs, 30-day retention and PII redaction that is off by default. The default turn detector streams user audio to LiveKit Inference when deployed to LiveKit Cloud or in `dev` mode with credentials, which the docs state (20 of 30). No built-in approval step or read-only mode. `disallow_interruptions()`, `on_duplicate=\"confirm\"`, MCP `allowed_tools`, prebuilt tasks with `require_confirmation` and the docs' advice to gate critical actions in code. Hosted agents run in sandboxed per-instance environments per the security page (10 of 20). Callers' speech and MCP results reach the model, and a search of llms-full.txt found no prompt-injection guidance (3 of 15). OpenTelemetry traces and metrics per session, session reports, and Agent Insights on LiveKit Cloud (14 of 15). security.txt with a contact and PGP key but no Expires field, a disclosure policy with safe harbour and a hall of fame, a SOC 2 Type II report for LiveKit Cloud under NDA, and no OSV advisories for livekit-agents or @livekit/agents on 1 November. No SECURITY.md in the repository and no paid bug bounty found. CI pins its actions by commit (15 of 20)." }, "scores": { "a": 77, "b": 62 } }, { "by": 6, "category": "schema", "leads": "livekit-agents", "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": "Library reading. A typed Python package (`py.typed`, mypy in CI) with a Python and Node.js API reference on docs.livekit.io. The reference llms.txt link to the Python reference's Markdown still returns 404 on 1 November (22 of 25). llms.txt with section indexes, `.md` on every page, llms-full.txt and a docs MCP server (10). Pages say when to use a realtime model or a pipeline, when to choose `v1` or `v1-mini`, when to disallow interruptions and how to gate critical actions, and mark MCP as Python only (16 of 20). Function tools take their schema from typed signatures and docstrings, raw JSON Schema is accepted, and argument validation failures go back to the model as `ToolError` (13 of 15). 15 example folders in the repository after provider-specific examples were removed on 27 October, 39 recipes, and an events and error-handling reference (13 of 15). No changelog in the repository or docs, release notes only on GitHub, and the quickstart's `agent.py` still ends with `agents.cli.run_app(server)`, which the framework marks as deprecated, still so on 1 November (7 of 15)." }, "scores": { "a": 75, "b": 81 } } ], "facts": [ { "a": "HTTP API", "b": "Agent framework", "name": "Kind" }, { "a": "Amazon Web Services", "b": "LiveKit Incorporated", "name": "Vendor" }, { "a": "no (local only)", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "HTTP", "b": "", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Pay per use", "b": "Free", "name": "Pricing" }, { "a": "not published", "b": "$0.005 per minute of audio", "name": "Price for voice agents" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "none", "b": "Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms", "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": "2026-10-28", "name": "Last release" }, { "a": "2026-10-01", "b": "no date given", "name": "Terms last updated" }, { "a": "2026-05-18", "b": "no date given", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "yes", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "not found in the text", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "820k npm/wk, 1.1M PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "LiveKit Agents scores 72.7 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 5 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability and security \u0026 auth.", "question": "Which is better for AI agents, Amazon Nova 2 Sonic or LiveKit Agents?" }, { "answer": "No hosted endpoint is listed for Amazon Nova 2 Sonic. No hosted endpoint is listed for LiveKit Agents.", "question": "Can an agent call Amazon Nova 2 Sonic and LiveKit Agents without installing anything?" }, { "answer": "No open-source release is listed for Amazon Nova 2 Sonic. LiveKit Agents is open source (Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms).", "question": "Are Amazon Nova 2 Sonic and LiveKit Agents open source?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 95 against 67", "Security \u0026 auth, 77 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, 81 against 75", "Agent ergonomics, 80 against 64", "Payments \u0026 pricing, 60 against 10", "Maintenance \u0026 community, 87 against 50" ], "also": [ "Agent-ready, a grade of BB or better", "Free to start without a card", "Open source" ], "goodFor": "Teams writing their own voice agents in Python or Node.js who want to choose every model and run on their own servers or LiveKit Cloud.", "slug": "livekit-agents", "watchFor": "The turn-detector models are under a proprietary licence that forbids use outside LiveKit Agents and training other models on their output" } ], "history": { "amazon-nova-sonic": null, "livekit-agents": [ { "causes": [ "correction" ], "date": "2026-11-01", "delta": 0.2, "from": 72.5, "fromGrade": "BB", "to": 72.7, "toGrade": "BB" } ] }, "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 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"title": "LiveKit Agents vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-ultravox" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-vaani-voice.json", "title": "LiveKit Agents vs Vaani Developer Platform", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-vaani-voice" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-vapi.json", "title": "LiveKit Agents vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-vocily.json", "title": "LiveKit Agents vs Vocily AI", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-vogent.json", "title": "LiveKit Agents vs Vogent API", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/cuelight-vs-livekit-agents.json", "title": "CueLight vs LiveKit Agents", "url": "https://www.anchorterminal.com/compare/cuelight-vs-livekit-agents" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-pipecat-phonellm.json", "title": "LiveKit Agents vs Pipecat PhoneLLM", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-pipecat-phonellm" }, { "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/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" } ], "panel": null, "scores": [ { "amazon-nova-sonic": 95, "by": 28, "edge": "amazon-nova-sonic", "key": "reliability", "livekit-agents": 67, "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "amazon-nova-sonic": 75, "by": 6, "edge": "livekit-agents", "key": "schema", "livekit-agents": 81, "name": "Schema \u0026 documentation", "weight": 13 }, { "amazon-nova-sonic": 64, "by": 16, "edge": "livekit-agents", "key": "ergonomics", "livekit-agents": 80, "name": "Agent ergonomics", "weight": 13 }, { "amazon-nova-sonic": 77, "by": 15, "edge": "amazon-nova-sonic", "key": "security", "livekit-agents": 62, "name": "Security \u0026 auth", "weight": 14 }, { "amazon-nova-sonic": 10, "by": 50, "edge": "livekit-agents", "key": "payments", "livekit-agents": 60, "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "amazon-nova-sonic": 50, "by": 37, "edge": "livekit-agents", "key": "maintenance", "livekit-agents": 87, "name": "Maintenance \u0026 community", "weight": 7 }, { "amazon-nova-sonic": 79, "by": 3, "edge": "livekit-agents", "key": "transparency", "livekit-agents": 82, "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "LiveKit Agents scores 72.7 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 5 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability and security \u0026 auth. 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.", "livekit-agents": "An Apache-2.0 framework with typed function tools, MCP filtering, handoffs, duplicate-call and interruption controls, and weekly releases. It needs a LiveKit server, and the default turn detector's models are under a proprietary licence limited to this framework. No approval primitive or prompt-injection guidance was found." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents", "json": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.min.md" }, "markdown": "LiveKit Agents scores 72.7 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 5 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability and security \u0026 auth. 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- LiveKit Agents: grade BB, 72.7/100, rank #119 of 1486. Markdown https://www.anchorterminal.com/tools/livekit-agents.md · JSON https://www.anchorterminal.com/api/v1/tools/livekit-agents.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 67\n- Security \u0026 auth, 77 against 62\n\nWatch for: Connections end after 8 minutes, so long calls need the session-continuation pattern\n\n### LiveKit Agents (BB)\n\nGood for: Teams writing their own voice agents in Python or Node.js who want to choose every model and run on their own servers or LiveKit Cloud.\n\nAhead on:\n- Schema \u0026 documentation, 81 against 75\n- Agent ergonomics, 80 against 64\n- Payments \u0026 pricing, 60 against 10\n- Maintenance \u0026 community, 87 against 50\n\nAlso in its favour:\n- Agent-ready, a grade of BB or better\n- Free to start without a card\n- Open source\n\nWatch for: The turn-detector models are under a proprietary licence that forbids use outside LiveKit Agents and training other models on their output\n\n\n## Why the edge\n\n### Payments \u0026 pricing: LiveKit Agents +50\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- LiveKit Agents (60): No x402, MPP or L402 (0 of 40). Read with the rule for open-source software that has a paid hosted option. LiveKit Cloud publishes per-minute prices for agent sessions and recordings and per-unit prices for every LiveKit Inference model without a login (20). The Apache-2.0 packages install with no card, and LiveKit Cloud's Build plan is $0 with no card (20). The framework and a LiveKit server can both run self-hosted with no account or sign-up (20).\n\n### Maintenance \u0026 community: LiveKit Agents +37\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- LiveKit Agents (87): `livekit-agents` 1.8.10 tagged on 28 October 2026, after 1.8.9 on 23 October (30). 18 tagged releases in the 90 days to 1 November, from 1.6.8 on 3 August to 1.8.10, counted from the repository's tags since PyPI didn't answer from our shell on 1 November, and `@livekit/agents` 1.9.4 (24 October) and 1.9.5 (28 October) in livekit/agents-js (20). Issue and pull request reply times weren't read, because GitHub's pages answer 403, and the earlier figures, taken from a third-party copy of GitHub data, are struck. In the clone, 147 of the 200 newest commits (11 to 31 October) came from about 80 authors with addresses outside livekit.io, bots aside, and every one of the 200 landed as a numbered pull request. CODEOWNERS sends every change to the agent-devs team, a workflow requests that team's review on pull requests from the repository's own branches, and the issue form points questions to LiveKit's community forum, with a Slack linked from the README (15 of 25). Python 1.8.10 and Node.js 1.9.5 were both tagged on 28 October (15). Renovate, a uv lockfile that holds new dependencies back seven days, security bumps of aiohttp (22 October) and nltk (27 October), pinned actions and CI on every push, with the pass state unconfirmed (7 of 10). 30 + 20 + 15 + 15 + 7 = 87.\n\n### Reliability: Amazon Nova 2 Sonic +28\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- LiveKit Agents (67): Graded as a framework with the local-software lines, since LiveKit Cloud is optional and not graded. Official packages on PyPI (Python 3.10 to 3.14 declared) and npm (Node.js 20 or later per the docs) (20). Public workflows run on every push to main and on pull requests. Unit tests on Linux with Python 3.12 over 310 test files on 1 November, ruff, and mypy on Python 3.10 and 3.13, with a small blockguard suite on Linux, macOS and Windows. GitHub's pages and API weren't readable from our session, so a passing main is not confirmed (15 of 25). Open issues and reply times weren't read, because GitHub's pages answer 403, and the earlier issue figures, taken from a third-party copy of GitHub data, are struck. In a clone of main, the 200 newest commits run from 11 to 31 October 2026 and 104 of them are fixes, among them an Inference STT socket that hung when silently dropped (#8023) and an avatar plugin's error handler that crashed (#7498). None names the issue it closes and there is no changelog, so whether reported crashes and regressions get handled can't be seen (10 of 25). No CHANGELOG file. Release notes are on GitHub, which we couldn't read, and the repository's release-notes script asks for Breaking changes and Security sections. Migration guides exist for 0.x to 1.0, AGENTS.md makes patch bumps the default, and 2.0.0b1 was tagged on 12 October and the docs' migration guides still stop at Python 0.x to 1.0 and Node.js 1.x to 1.5 on 1 November (7 of 15). 1.8.10, stable since 1.0 (15).\n\n### Agent ergonomics: LiveKit Agents +16\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- LiveKit Agents (80): Framework reading. An MCP server is about ten lines with `mcp.MCPToolset`, with `allowed_tools`, `filter_tools()` and a `tool_result_resolver` to trim results before they reach the model, but Python only (20 of 25). Tools can be added, removed or replaced per agent and per state, flags such as `IGNORE_ON_ENTER` hide a tool at the greeting, and handoffs swap the active toolset (16 of 20). `ToolError` returns a message the model can act on, invalid arguments come back as a `ToolError` naming the tool, and by default a session closes only after more than three unrecoverable STT, LLM or TTS errors of one kind (17 of 20). Interrupted tools finish in the background and keep their result in history, `disallow_interruptions()` protects tools that write, and `on_duplicate` can reject, replace or confirm a second call. Duplicates are matched by tool name only, and there are no idempotency keys (14 of 20). `AgentSession` supplies VAD and a turn detector by default and LiveKit Inference takes model strings with one key, in Python and Node.js, but every agent needs a LiveKit server and three environment variables (13 of 15).\n\n### Security \u0026 auth: Amazon Nova 2 Sonic +15\n\n- Amazon Nova 2 Sonic (77): SigV4 with IAM roles and temporary credentials scoped per model ARN, as the Sonic quickstart signs (30). Tools run in the client, so side effects are the developer's to approve, and IAM can restrict which models a role invokes, with no approval step in the API (12 of 20). The model listens to callers and acts on tool results, and no prompt-injection guidance was found in the Sonic guide (5 of 15). CloudTrail logs Bedrock API calls, read as amazon-nova-embeddings was (12 of 15). VDP on HackerOne, Bedrock in SOC scope and a valid security.txt on aws.amazon.com, with no paid bounty, as on the other AWS listings (18 of 20). Total 77.\n- LiveKit Agents (62): Framework reading. Agents authenticate to a LiveKit server with an API key and secret that sign JWT access tokens with room grants and a lifetime. No analytics calls were found in the source. Uploads to LiveKit Cloud happen only when the agent connects to LiveKit Cloud media servers and the project enables Agent Observability, which the terms call a capability the customer elects to enable. `record` then defaults to the project setting, and since 23 October (1.8.9) the recording header also carries a session summary without chat history or events, with `record=False` or per-category opt-outs, 30-day retention and PII redaction that is off by default. The default turn detector streams user audio to LiveKit Inference when deployed to LiveKit Cloud or in `dev` mode with credentials, which the docs state (20 of 30). No built-in approval step or read-only mode. `disallow_interruptions()`, `on_duplicate=\"confirm\"`, MCP `allowed_tools`, prebuilt tasks with `require_confirmation` and the docs' advice to gate critical actions in code. Hosted agents run in sandboxed per-instance environments per the security page (10 of 20). Callers' speech and MCP results reach the model, and a search of llms-full.txt found no prompt-injection guidance (3 of 15). OpenTelemetry traces and metrics per session, session reports, and Agent Insights on LiveKit Cloud (14 of 15). security.txt with a contact and PGP key but no Expires field, a disclosure policy with safe harbour and a hall of fame, a SOC 2 Type II report for LiveKit Cloud under NDA, and no OSV advisories for livekit-agents or @livekit/agents on 1 November. No SECURITY.md in the repository and no paid bug bounty found. CI pins its actions by commit (15 of 20).\n\n### Schema \u0026 documentation: LiveKit Agents +6\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- LiveKit Agents (81): Library reading. A typed Python package (`py.typed`, mypy in CI) with a Python and Node.js API reference on docs.livekit.io. The reference llms.txt link to the Python reference's Markdown still returns 404 on 1 November (22 of 25). llms.txt with section indexes, `.md` on every page, llms-full.txt and a docs MCP server (10). Pages say when to use a realtime model or a pipeline, when to choose `v1` or `v1-mini`, when to disallow interruptions and how to gate critical actions, and mark MCP as Python only (16 of 20). Function tools take their schema from typed signatures and docstrings, raw JSON Schema is accepted, and argument validation failures go back to the model as `ToolError` (13 of 15). 15 example folders in the repository after provider-specific examples were removed on 27 October, 39 recipes, and an events and error-handling reference (13 of 15). No changelog in the repository or docs, release notes only on GitHub, and the quickstart's `agent.py` still ends with `agents.cli.run_app(server)`, which the framework marks as deprecated, still so on 1 November (7 of 15).\n\n## Score by category\n\n| Category | Weight | Amazon Nova 2 Sonic | LiveKit Agents | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 95 | 67 | Amazon Nova 2 Sonic +28 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 75 | 81 | LiveKit Agents +6 |\n| Agent ergonomics | 13% (16.2 this run) | 64 | 80 | LiveKit Agents +16 |\n| Security \u0026 auth | 14% (17.5 this run) | 77 | 62 | Amazon Nova 2 Sonic +15 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 60 | LiveKit Agents +50 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 50 | 87 | LiveKit Agents +37 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 82 | LiveKit Agents +3 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **67.6 · B** | **72.7 · BB** | |\n\n## Facts side by side\n\n| Fact | Amazon Nova 2 Sonic | LiveKit Agents |\n| --- | --- | --- |\n| Kind | HTTP API | Agent framework |\n| Vendor | Amazon Web Services | LiveKit Incorporated |\n| Hosted endpoint | no (local only) | no (local only) |\n| Transports | HTTP | |\n| Auth | API key | API key |\n| Pricing | Pay per use | Free |\n| Price for voice agents | not published | $0.005 per minute of audio |\n| x402 | no | no |\n| Licence | none | Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms |\n| Tools exposed | 0 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-05-28 | 2026-10-28 |\n| Terms last updated | 2026-10-01 | no date given |\n| Privacy policy last updated | 2026-05-18 | no date given |\n| Customer content may train models | yes, with an opt-out | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | yes |\n| Terms or service can change without notice | yes | not found in the text |\n| Arbitration or class-action waiver | not found in the text | yes |\n| Popularity | none | 820k npm/wk, 1.1M PyPI/wk |\n| Agent reviews | none | 3/5 (4) |\n\n## How the scores have moved\n\n### Amazon Nova 2 Sonic\n\nNo score change since it was listed.\n\n### LiveKit Agents\n\n- +0.2 on 1 November 2026: correction\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**LiveKit Agents.** An Apache-2.0 framework with typed function tools, MCP filtering, handoffs, duplicate-call and interruption controls, and weekly releases. It needs a LiveKit server, and the default turn detector's models are under a proprietary licence limited to this framework. No approval primitive or prompt-injection guidance was found.\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### LiveKit Agents\n\n1. Set `LIVEKIT_URL`, `LIVEKIT_API_KEY` and `LIVEKIT_API_SECRET` before starting. Every agent joins a LiveKit room, on LiveKit Cloud or a self-hosted server\n2. Pass `inference.TurnDetector(version=\"v1-mini\")` to keep turn detection local, and read `MODEL_LICENSE` before using LiveKit's turn models anywhere but LiveKit Agents\n3. Pass `record=False`, or a dict per category, to `session.start()` if audio, transcripts, traces and logs must not reach LiveKit Cloud\n4. Call `context.disallow_interruptions()` first in tools that write, and set `on_duplicate=\"reject\"` or `\"confirm\"`. Duplicates are matched by tool name only, not arguments\n5. Wrap MCP servers in `mcp.MCPToolset` with `allowed_tools` (Python only). The `mcp_servers` parameter is deprecated\n\n## Questions\n\n### Which is better for AI agents, Amazon Nova 2 Sonic or LiveKit Agents?\n\nLiveKit Agents scores 72.7 (BB) on agent readiness against Amazon Nova 2 Sonic's 67.6 (B), and leads in 5 of 7 scored categories. Amazon Nova 2 Sonic leads on reliability and security \u0026 auth.\n\n### Can an agent call Amazon Nova 2 Sonic and LiveKit Agents without installing anything?\n\nNo hosted endpoint is listed for Amazon Nova 2 Sonic. No hosted endpoint is listed for LiveKit Agents.\n\n### Are Amazon Nova 2 Sonic and LiveKit Agents open source?\n\nNo open-source release is listed for Amazon Nova 2 Sonic. LiveKit Agents is open source (Apache-2.0 for the framework and plugins. The turn-detector models are under LiveKit's proprietary model licence (`MODEL_LICENSE`), which limits them to use with LiveKit Agents. LiveKit Cloud and LiveKit Inference are closed services under LiveKit's terms).\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.json, and with the fewest tokens: https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-livekit-agents.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"amazon-nova-sonic\", \"b\": \"livekit-agents\"}`. From a terminal: `anchor compare amazon-nova-sonic livekit-agents`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/amazon-nova-sonic.json and https://www.anchorterminal.com/api/v1/tools/livekit-agents.json\n\n## Other comparisons with Amazon Nova 2 Sonic or LiveKit Agents\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 GPT-Live](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-gpt-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 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 LiveKit Agents](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-livekit-agents.md)\n- [Bland AI API + MCP vs LiveKit Agents](https://www.anchorterminal.com/compare/bland-ai-vs-livekit-agents.md)\n- [Bolna API + MCP vs LiveKit Agents](https://www.anchorterminal.com/compare/bolna-vs-livekit-agents.md)\n- [Deepgram Voice Agent API vs LiveKit Agents](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-livekit-agents.md)\n- [ElevenLabs Agents API + MCP vs LiveKit Agents](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-livekit-agents.md)\n- [fone.me vs LiveKit Agents](https://www.anchorterminal.com/compare/fone-me-vs-livekit-agents.md)\n- [Gemini Live API vs LiveKit Agents](https://www.anchorterminal.com/compare/gemini-live-vs-livekit-agents.md)\n- [Harmony.ai vs LiveKit Agents](https://www.anchorterminal.com/compare/harmony-ai-vs-livekit-agents.md)\n- [Hume EVI (Empathic Voice Interface) vs LiveKit Agents](https://www.anchorterminal.com/compare/hume-evi-vs-livekit-agents.md)\n- [Inworld Realtime API vs LiveKit Agents](https://www.anchorterminal.com/compare/inworld-realtime-vs-livekit-agents.md)\n- [LiveKit Agents vs OpenAI Realtime API](https://www.anchorterminal.com/compare/livekit-agents-vs-openai-realtime.md)\n- [LiveKit Agents vs Pipecat](https://www.anchorterminal.com/compare/livekit-agents-vs-pipecat.md)\n- [LiveKit Agents vs PlaceCall](https://www.anchorterminal.com/compare/livekit-agents-vs-placecall.md)\n- [LiveKit Agents vs Retell AI API + MCP](https://www.anchorterminal.com/compare/livekit-agents-vs-retell-ai.md)\n- [LiveKit Agents vs Rime Prism](https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism.md)\n- [LiveKit Agents vs Synthflow API + MCP](https://www.anchorterminal.com/compare/livekit-agents-vs-synthflow.md)\n- [LiveKit Agents vs Ultravox Realtime API](https://www.anchorterminal.com/compare/livekit-agents-vs-ultravox.md)\n- [LiveKit Agents vs Vaani Developer Platform](https://www.anchorterminal.com/compare/livekit-agents-vs-vaani-voice.md)\n- [LiveKit Agents vs Vapi API + MCP](https://www.anchorterminal.com/compare/livekit-agents-vs-vapi.md)\n- [LiveKit Agents vs Vocily AI](https://www.anchorterminal.com/compare/livekit-agents-vs-vocily.md)\n- [LiveKit Agents vs Vogent API](https://www.anchorterminal.com/compare/livekit-agents-vs-vogent.md)\n- [CueLight vs LiveKit Agents](https://www.anchorterminal.com/compare/cuelight-vs-livekit-agents.md)\n- [LiveKit Agents vs Pipecat PhoneLLM](https://www.anchorterminal.com/compare/livekit-agents-vs-pipecat-phonellm.md)\n- [GPT-Live vs LiveKit Agents](https://www.anchorterminal.com/compare/gpt-live-vs-livekit-agents.md)\n- [Amazon Nova 2 Sonic vs Pipecat PhoneLLM](https://www.anchorterminal.com/compare/amazon-nova-sonic-vs-pipecat-phonellm.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit Anchor Terminal and link the page or API address you took it from (https://www.anchorterminal.com/terms/#data)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-11-07", "license": "CC-BY-4.0", "method": "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 LiveKit Agents", "url": "" } ], "description": "LiveKit Agents scores 72.7 (BB) to Amazon Nova 2 Sonic's 67.6 (B) for voice agents. 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