{ "data": { "a": { "slug": "rime-prism", "name": "Rime Prism", "vendor": "Rime Labs", "vendorUrl": "https://www.rime.ai/prism", "kind": "http-api", "category": "voice-agents", "summary": "Prism is Rime's speech-to-speech model for voice agents. It takes caller audio over one WebSocket, decides when the caller has finished, calls the developer's tools and replies in speech with matching text, in English.", "url": "https://www.anchorterminal.com/tools/rime-prism", "markdownUrl": "https://www.anchorterminal.com/tools/rime-prism.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/rime-prism.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/rime-prism.json", "license": "Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT.", "transports": [ "websocket" ], "remoteUrl": "wss://prism.api.rime.ai/v1/realtime", "packages": [ { "registry": "pypi", "name": "rimelabs-sdk" }, { "registry": "npm", "name": "@rimelabs/sdk" }, { "registry": "go", "name": "github.com/rimelabs/rime-sdk/go" }, { "registry": "cargo", "name": "rimelabs-sdk" } ], "auth": "api-key", "authNotes": "Rime API key from the dashboard, sent as `Authorization: Bearer` on the WebSocket upgrade from a backend. Prism reads no query parameters, so the key can't go in the URL, and it has no ephemeral tokens for browsers or phones. The same key covers Rime's text-to-speech and speech-to-text. No scoped or read-only keys were found in the docs.", "pricing": "freemium", "pricingNotes": "$0.08 a minute of call audio on Flex (pay as you go, card billed monthly) and $0.064 on Scale ($100 a month of credit, 20% off). Every account gets $50 of usage a month across Rime's models, Prism included, with no card. Fine-tuning, custom voices, VPC or on-prem deployment, SLAs and a BAA are Enterprise items with custom pricing (https://www.rime.ai/pricing, checked 2026-10-28).", "priceSummary": "Freemium", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the Prism docs, the API reference or the pricing page, checked 2026-10-28. Paid plans bill a card monthly.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-28" }, "docsUrl": "https://docs.rime.ai/docs/prism/overview", "llmsTxt": "https://docs.rime.ai/llms.txt", "capabilities": [ "voice.speech-to-speech", "voice.agent", "voice.tools" ], "tags": [ "hosted", "freemium", "no-card", "free-tier", "closed-source", "speech-to-speech", "websocket", "streaming", "function-calling", "llms-txt", "python", "typescript", "go", "rust", "status-page", "soc2", "hipaa", "enterprise" ], "lastRelease": "2026-10-28", "graded": true, "anchor": { "graded": true, "score": 57.9, "grade": "C", "agentReady": false, "rank": 686, "ranked": true, "rankOf": 1222, "categoryRank": 14, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 73, "maintenance": 65, "payments": 40, "reliability": 41, "schema": 69, "security": 56, "transparency": 70 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-28" }, "negative": 0, "verdict": "Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio.", "bestFor": "English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.", "strengths": [ "Errors page lists 41 codes, each with scope, the field at fault, a correlation ID and what to do", "$0.08 a minute on Flex, with $50 of free usage a month and no card", "Uses OpenAI Realtime beta event names, with a migration guide for WebSocket, LiveKit, Pipecat and OpenAI SDK clients", "Key only in the upgrade header, and Prism reads no query parameters", "Context truncation is configurable and each reply reports what was left out and its token usage" ], "weaknesses": [ "Rime's status page had no Prism component on launch day, and there is no incident history for it", "No concurrency limit per account or key was found, and a full server refuses with 503", "All four SDKs are 0.1.0 alpha releases that may change their API", "English only, four voices, 16 kHz PCM16 in, with no mu-law, so phone calls need a bridge", "Privacy and security pages describe text in, audio out, and say nothing specific about caller audio" ], "agentNotes": [ "Connect from a backend with `Authorization: Bearer`, since Prism has no browser tokens and reads no query parameters.", "Send `session.update` before any audio, or every append fails with `session_not_initialized`.", "Keep streaming audio, silence included, while Prism speaks, because it finds turn ends and interruptions from that audio.", "Ask for the continuation after each tool result, since Prism doesn't resume on its own, and never rerun a call with an unknown outcome.", "Pin the exact SDK version, because the SDKs are alpha and a new release can change the API." ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 0, "avgRating": 0, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 57.9 } ], "editorialScores": { "ergonomics": 73, "maintenance": 65, "payments": 40, "reliability": 41, "schema": 69, "security": 56, "transparency": 58 }, "provenanceScore": 81, "checked": { "categories": { "ergonomics": "2026-10-28", "maintenance": "2026-10-28", "payments": "2026-10-28", "reliability": "2026-10-28", "schema": "2026-10-28", "security": "2026-10-28", "transparency": "2026-10-28" }, "last": "2026-10-28", "oldest": "2026-10-28", "stale": false, "staleAfterDays": 90 } }, "connect": { "install": "uv add \"rimelabs-sdk==0.1.0a25\"" }, "letme": { "capability": "https://letme.dev/voice.speech-to-speech", "tool": "https://letme.dev/rime-prism" }, "sameCompany": [ "rime-tts" ], "area": "voice", "unitPrices": [ { "item": "Prism, Flex", "unit": "call-minute", "usd": 0.08, "note": "Metered by the minute of call audio, pay as you go. Pricing page, checked 28 October 2026" }, { "item": "Prism, Scale", "unit": "call-minute", "usd": 0.064, "note": "20% off Flex for $100 a month of credit, which rolls over up to $200. Pricing page, checked 28 October 2026" } ], "provenance": { "legalEntity": "Rime Labs, Inc.", "domain": "rime.ai", "domainRegistered": "2020-03-12", "endpointOnVendorDomain": true, "terms": "https://www.rime.ai/terms", "privacy": "https://www.rime.ai/privacy", "statusPage": "https://www.rimestat.us", "changelog": "https://docs.rime.ai/docs/changelog", "securityTxt": "none", "checked": "2026-10-28", "notes": [ "The terms name Rime Labs, Inc., the same entity as the rime-tts listing. The domain registration date stands per that listing's check of 30 September 2026 and wasn't re-read.", "status.rime.ai redirects to www.rimestat.us, an incident.io page with Text-to-speech API and Platform API components and data since 30 August 2026. It had no Prism component on 28 October 2026.", "www.rime.ai/.well-known/security.txt answered 404. The security page links a vulnerability disclosure policy.", "The Prism endpoint is on prism.api.rime.ai, under the vendor's own domain." ], "score": 81 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/rime-prism.json", "live": { "slug": "rime-prism", "probe": { "target": "wss://prism.api.rime.ai/v1/realtime", "method": "get", "lastAt": "2026-10-29T20:41:25.616992818Z", "lastOk": false, "lastStatus": 0, "lastMs": 0, "lastNote": "unsupported protocol scheme \"wss\"", "authRequired": false, "uptime24h": 0, "uptime30d": 0, "p50ms24h": 0, "p95ms24h": 0, "samples24h": 36, "samples30d": 36, "days": [ { "date": "2026-10-29", "probes": 36, "ok": 0 } ], "outages": [ { "start": "2026-10-29T17:19:57.075096127Z", "end": "0001-01-01T00:00:00Z", "note": "unsupported protocol scheme \"wss\"" } ] }, "vendorStatus": { "page": "https://www.rimestat.us", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-29T20:31:37.377251634Z" }, "updatedAt": "2026-10-29T20:41:25.616992818Z" } }, "answer": "Vapi API + MCP scores 63.7 (B) on agent readiness against Rime Prism's 57.9 (C), and leads in 5 of 7 scored categories. Rime Prism leads on agent ergonomics and payments \u0026 pricing.", "b": { "slug": "vapi", "name": "Vapi API + MCP", "vendor": "Vapi", "vendorUrl": "https://vapi.ai", "kind": "http-api", "category": "voice-agents", "summary": "Developer platform for phone and web voice agents.", "url": "https://www.anchorterminal.com/tools/vapi", "markdownUrl": "https://www.anchorterminal.com/tools/vapi.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/vapi.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/vapi.json", "repo": "https://github.com/VapiAI/mcp-server", "license": "MIT (MCP server)", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.vapi.ai", "packages": [ { "registry": "npm", "name": "@vapi-ai/server-sdk" }, { "registry": "npm", "name": "@vapi-ai/web" }, { "registry": "pypi", "name": "vapi_server_sdk" }, { "registry": "npm", "name": "@vapi-ai/mcp-server" } ], "auth": "api-key", "authNotes": "Private API key as a bearer token for the REST API and the hosted MCP server at `https://mcp.vapi.ai/mcp` (an SSE endpoint also exists). A separate public key is for browser calls with the Web SDK. The local MCP server reads `VAPI_TOKEN`.", "pricing": "usage", "pricingNotes": "Usage only is $0.05 a minute Vapi hosting, plus transcriber, model, voice and telephony at provider cost, prepaid with $5 of free credits to start. Vapi telephony, SIP, WebSockets and WebRTC transport are free, Twilio inbound runs $0.008 a minute and outbound $0.014. Success Packages add support and limits on top of usage, Core $29 a month and Pro 10 per cent of the hosting fee with a $999 monthly minimum. Add-ons include HIPAA at $2,000 a month and extra concurrent lines at $10 a line a month. The vendor's calculator puts 1,000 minutes with Deepgram, OpenAI and ElevenLabs at roughly $0.08 to $0.13 a minute all in (https://vapi.ai/pricing).", "priceSummary": "$29 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).", "endpoints": [] }, "toolCount": 20, "popularity": { "githubStars": 57, "npmWeekly": 177088, "pypiWeekly": 42248, "asOf": "2026-09-30" }, "docsUrl": "https://docs.vapi.ai", "llmsTxt": "https://docs.vapi.ai/llms.txt", "openapi": "https://api.vapi.ai/api-json", "capabilities": [ "voice.agent", "voice.pipeline", "voice.speech-to-speech", "voice.tools", "voice.telephony" ], "tags": [ "hosted", "closed-source", "no-card", "mcp", "llms-txt", "openapi", "typescript", "python", "webhooks", "streaming", "pipeline", "speech-to-speech", "enterprise" ], "lastRelease": "2026-09-21", "graded": true, "anchor": { "graded": true, "score": 63.7, "grade": "B", "agentReady": false, "rank": 442, "ranked": true, "rankOf": 1222, "categoryRank": 9, "methodology": "0.7", "run": "2026-10-01", "scores": { "ergonomics": 64, "maintenance": 88, "payments": 35, "reliability": 70, "schema": 89, "security": 58, "transparency": 75 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": -4, "negativeNotes": [ "2026-06-03. A compromised developer GitHub token was used to push malicious code to Vapi repositories and publish four malicious `@vapi-ai/server-sdk` versions (0.11.1, 0.11.2, 1.2.1, 1.2.2) to npm. Vapi says they were removed within about three hours with zero downloads and no customer data exposed, and it published a write-up. Fixed and documented, so we deduct 4 of a possible 15 (https://vapi.ai/blog/our-response-to-june-3-supply-chain-incident)." ], "verdict": "Voice agents can combine supported transcription, model and voice providers, including customer-supplied endpoints. Per-minute cost depends on the selected providers.", "bestFor": "Developers who want to choose every provider, bring their own keys and tune cost against latency.", "strengths": [ "Any mix of transcriber, model and voice provider, or your own keys and endpoints", "OpenAPI file, llms.txt and a weekly changelog", "Public keys limited to allowed origins and assistants", "99 per cent uptime SLA on the Pro package, 99.9 per cent on Premier", "Versioned assistants and tools with draft and publish since August 2026" ], "weaknesses": [ "Real per-minute cost depends on provider choices", "Usage only has 4 concurrent lines and 14 days of retention", "MCP tools that place calls or buy numbers carry no annotations", "No request rate limits or Retry-After guidance found", "Malicious SDK versions reached npm for about three hours on 3 June 2026" ], "agentNotes": [ "Read `subscriptionLimits.concurrencyBlocked` in the `POST /call` response, a full account queues the call rather than failing", "Confirm with a person before `vapi_create_call` or `vapi_buy_phone_number`, the server won't ask", "Pin transcriber, model and voice and set fallback plans so one provider outage doesn't drop calls", "Read the call log's cost breakdown to see what each provider charged", "Check `@vapi-ai/server-sdk` isn't pinned to 0.11.1, 0.11.2, 1.2.1 or 1.2.2" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.7", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 63.7 } ], "editorialScores": { "ergonomics": 64, "maintenance": 88, "payments": 35, "reliability": 70, "schema": 89, "security": 58, "transparency": 70 }, "provenanceScore": 79, "checked": { "categories": { "ergonomics": "2026-10-01", "maintenance": "2026-10-01", "payments": "2026-10-01", "reliability": "2026-10-01", "schema": "2026-10-01", "security": "2026-10-01", "transparency": "2026-10-01" }, "last": "2026-10-01", "lastMoved": "2026-10-27", "oldest": "2026-10-01", "stale": false, "staleAfterDays": 90 } }, "connect": { "http": "curl https://api.vapi.ai/call -H \"Authorization: Bearer $VAPI_API_KEY\" \\\n -H \"content-type: application/json\" \\\n -d '{\"assistantId\":\"\u003cassistant-id\u003e\",\"phoneNumberId\":\"\u003cphone-number-id\u003e\",\"customer\":{\"number\":\"+15551234567\"}}'", "claudeCode": "claude mcp add --transport http vapi https://mcp.vapi.ai/mcp --header \"Authorization: Bearer $VAPI_API_KEY\"", "config": { "mcpServers": { "vapi": { "args": [ "-y", "@vapi-ai/mcp-server" ], "command": "npx", "env": { "VAPI_TOKEN": "${VAPI_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/vapi" }, "area": "voice", "unitPrices": [ { "item": "Vapi hosting", "unit": "call-minute", "usd": 0.05, "note": "platform fee only, transcriber, model, voice and telephony billed on top at cost" }, { "item": "Twilio outbound transport", "unit": "call-minute", "usd": 0.014, "note": "US, passed through" }, { "item": "Twilio inbound transport", "unit": "call-minute", "usd": 0.008, "note": "US, passed through" }, { "item": "Core Success Package", "unit": "month", "usd": 29 }, { "item": "Pro Success Package minimum", "unit": "month", "usd": 999, "note": "10 per cent of hosting fees, $999 minimum" }, { "item": "Extra concurrent call line", "unit": "month", "usd": 10 }, { "item": "HIPAA add-on", "unit": "month", "usd": 2000 } ], "provenance": { "legalEntity": "Vapi Inc.", "domain": "vapi.ai", "domainRegistered": "2023-08-22", "endpointOnVendorDomain": true, "terms": "https://vapi.ai/terms-of-service", "privacy": "https://vapi.ai/privacy", "statusPage": "https://status.vapi.ai", "changelog": "https://docs.vapi.ai/changelog", "securityTxt": "none", "checked": "2026-10-01", "notes": [ "The terms name Vapi Inc., a Delaware corporation." ], "score": 79 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/vapi.json", "live": { "slug": "vapi", "probe": { "target": "https://api.vapi.ai", "method": "get", "lastAt": "2026-10-29T20:41:33.54898163Z", "lastOk": true, "lastStatus": 200, "lastMs": 226, "authRequired": false, "uptime24h": 100, "uptime30d": 99.95, "p50ms24h": 204, "p95ms24h": 285, "samples24h": 249, "samples30d": 7416, "days": [ { "date": "2026-09-30", "probes": 35, "ok": 35 }, { "date": "2026-10-01", "probes": 276, "ok": 276 }, { "date": "2026-10-02", "probes": 248, "ok": 248 }, { "date": "2026-10-03", "probes": 271, "ok": 271 }, { "date": "2026-10-04", "probes": 272, "ok": 272 }, { "date": "2026-10-05", "probes": 272, "ok": 272 }, { "date": "2026-10-06", "probes": 272, "ok": 272 }, { "date": "2026-10-07", "probes": 272, "ok": 272 }, { "date": "2026-10-08", "probes": 268, "ok": 268 }, { "date": "2026-10-09", "probes": 250, "ok": 250 }, { "date": "2026-10-10", "probes": 247, "ok": 247 }, { "date": "2026-10-11", "probes": 247, "ok": 247 }, { "date": "2026-10-12", "probes": 247, "ok": 247 }, { "date": "2026-10-13", "probes": 248, "ok": 247 }, { "date": "2026-10-14", "probes": 249, "ok": 249 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 250 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 255, "ok": 255 }, { "date": "2026-10-20", "probes": 252, "ok": 251 }, { "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": 250, "ok": 250 }, { "date": "2026-10-29", "probes": 215, "ok": 215 } ] }, "vendorStatus": { "page": "https://status.vapi.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-29T19:58:15.83708511Z" }, "versions": [ { "registry": "github", "name": "VapiAI/mcp-server", "version": "v0.0.11", "released": "2026-08-14", "seenAt": "2026-10-29T13:48:51.843661062Z" }, { "registry": "npm", "name": "@vapi-ai/mcp-server", "version": "0.0.11", "seenAt": "2026-10-29T13:48:49.980440326Z" }, { "registry": "npm", "name": "@vapi-ai/server-sdk", "version": "3.0.0", "seenAt": "2026-10-29T13:48:46.466474024Z" }, { "registry": "npm", "name": "@vapi-ai/web", "version": "3.0.1", "seenAt": "2026-10-29T13:48:47.95533598Z" }, { "registry": "pypi", "name": "vapi_server_sdk", "version": "3.0.0", "released": "2026-10-12", "seenAt": "2026-10-29T13:48:49.782909791Z" } ], "githubStars": 58, "npmWeekly": 134797, "pypiWeekly": 56164, "securityTxt": { "url": "https://vapi.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-29T15:37:15.187949102Z" }, "llmsTxt": { "url": "https://docs.vapi.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-29T15:05:51.990723674Z" }, "domain": { "domain": "vapi.ai", "registered": "2023-08-22", "source": "https://rdap.identitydigital.services/rdap/domain/vapi.ai", "checkedAt": "2026-10-25T14:03:43.600383393Z" }, "pages": [ { "url": "https://docs.vapi.ai/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-29T05:06:15.864668316Z", "changedAt": "2026-10-28T04:16:59.218307727Z", "fingerprint": "7049c4e105db" }, { "url": "https://docs.vapi.ai/whats-new", "kind": "changelog", "status": 200, "checkedAt": "2026-10-01T13:13:04.652536748Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "8b20b96ab7a4" }, { "url": "https://docs.vapi.ai/workflows/legacy-migration", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-29T05:06:18.957895671Z", "changedAt": "2026-10-28T04:17:02.342055906Z", "fingerprint": "04921e0466f6" }, { "url": "https://vapi.ai/pricing", "kind": "pricing", "status": 200, "checkedAt": "2026-10-29T05:18:18.298362896Z", "changedAt": "2026-10-06T16:13:21.353726202Z", "fingerprint": "d528b534573c" }, { "url": "https://vapi.ai/privacy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-29T05:18:21.552759704Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "f13594373bcf" }, { "url": "https://vapi.ai/terms-of-service", "kind": "terms", "status": 200, "checkedAt": "2026-10-29T05:18:22.459059558Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "4b1fd29445f7" } ], "github": { "repo": "vapiai/mcp-server", "checkedAt": "2026-10-26T08:14:39.900326252Z", "stars": 58, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-11T02:45:40Z", "openIssues": 5, "openPRs": 10, "issuesOpened90d": 1, "issuesClosed90d": 0, "prsMerged90d": 7, "ci": { "branch": "main", "runs": 3, "success": 3, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-01-28T04:36:11Z" }, "replies": { "sampled": 6, "unanswered": 5, "medianDays": 29.6 } }, "updatedAt": "2026-10-29T20:41:33.54898163Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "Rime Labs", "b": "Vapi", "name": "Vendor" }, { "a": "wss://prism.api.rime.ai/v1/realtime", "b": "https://api.vapi.ai", "name": "Hosted endpoint" }, { "a": "websocket", "b": "HTTP, Streamable HTTP, stdio", "name": "Transports" }, { "a": "API key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Pay per use", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT.", "b": "MIT (MCP server)", "name": "Licence" }, { "a": "none", "b": "20", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "2026-10-28", "b": "2026-09-21", "name": "Last release" }, { "a": "no date given", "b": "2026-09-14", "name": "Terms last updated" }, { "a": "no date given", "b": "2023-09-09", "name": "Privacy policy last updated" }, { "a": "not found in the text", "b": "yes", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "yes", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "yes", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "yes", "name": "Arbitration or class-action waiver" }, { "a": "none", "b": "57 stars, 177k npm/wk, 42k PyPI/wk", "name": "Popularity" }, { "a": "none", "b": "2.5/5 (2)", "name": "Agent reviews" } ], "faq": [ { "answer": "Vapi API + MCP scores 63.7 (B) on agent readiness against Rime Prism's 57.9 (C), and leads in 5 of 7 scored categories. Rime Prism leads on agent ergonomics and payments \u0026 pricing.", "question": "Which is better for AI agents, Rime Prism or Vapi API + MCP?" }, { "answer": "Both need an API key.", "question": "Do Rime Prism and Vapi API + MCP need an API key?" }, { "answer": "Yes. Rime Prism has a hosted endpoint at wss://prism.api.rime.ai/v1/realtime and Vapi API + MCP at https://api.vapi.ai.", "question": "Can an agent call Rime Prism and Vapi API + MCP without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Agent ergonomics, 73 against 64", "Payments \u0026 pricing, 40 against 35" ], "also": [ "No incidents deducted, where Vapi API + MCP loses 4 points for them" ], "goodFor": "English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.", "slug": "rime-prism", "watchFor": "Rime's status page had no Prism component on launch day, and there is no incident history for it" }, { "aheadOn": [ "Reliability, 70 against 41", "Schema \u0026 documentation, 89 against 69", "Maintenance \u0026 community, 88 against 65", "Transparency \u0026 trust, 75 against 70" ], "also": [ "Runs on your own machine" ], "goodFor": "Developers who want to choose every provider, bring their own keys and tune cost against latency.", "slug": "vapi", "watchFor": "Real per-minute cost depends on provider choices" } ], "job": { "capability": "voice.speech-to-speech", "name": "Voice speech to speech" }, "others": [ { "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism.json", "title": "AssemblyAI Voice Agent API vs Rime Prism", "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vapi.json", "title": "AssemblyAI Voice Agent API vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism.json", "title": "Bland AI API + MCP vs Rime Prism", "url": "https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/bland-ai-vs-vapi.json", "title": "Bland AI API + MCP vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/bland-ai-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism.json", "title": "Bolna API + MCP vs Rime Prism", "url": "https://www.anchorterminal.com/compare/bolna-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/bolna-vs-vapi.json", "title": "Bolna API + MCP vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/bolna-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism.json", "title": "Deepgram Voice Agent API vs Rime Prism", "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi.json", "title": "Deepgram Voice Agent API vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism.json", "title": "ElevenLabs Agents API + MCP vs Rime Prism", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi.json", "title": "ElevenLabs Agents API + MCP vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism.json", "title": "Gemini Live API vs Rime Prism", "url": "https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/gemini-live-vs-vapi.json", "title": "Gemini Live API vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/gemini-live-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism.json", "title": "Harmony.ai vs Rime Prism", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-vapi.json", "title": "Harmony.ai vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism.json", "title": "Hume EVI (Empathic Voice Interface) vs Rime Prism", "url": "https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/hume-evi-vs-vapi.json", "title": "Hume EVI (Empathic Voice Interface) vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/hume-evi-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism.json", "title": "LiveKit Agents vs Rime Prism", "url": "https://www.anchorterminal.com/compare/livekit-agents-vs-rime-prism" }, { "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/openai-realtime-vs-rime-prism.json", "title": "OpenAI Realtime API vs Rime Prism", "url": "https://www.anchorterminal.com/compare/openai-realtime-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/openai-realtime-vs-vapi.json", "title": "OpenAI Realtime API vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/openai-realtime-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/pipecat-vs-rime-prism.json", "title": "Pipecat vs Rime Prism", "url": "https://www.anchorterminal.com/compare/pipecat-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/pipecat-vs-vapi.json", "title": "Pipecat vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/pipecat-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/placecall-vs-rime-prism.json", "title": "PlaceCall vs Rime Prism", "url": "https://www.anchorterminal.com/compare/placecall-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/placecall-vs-vapi.json", "title": "PlaceCall vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/placecall-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism.json", "title": "Retell AI API + MCP vs Rime Prism", "url": "https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism" }, { "json": "https://www.anchorterminal.com/compare/retell-ai-vs-vapi.json", "title": "Retell AI API + MCP vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/retell-ai-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/rime-prism-vs-synthflow.json", "title": "Rime Prism vs Synthflow API + MCP", "url": "https://www.anchorterminal.com/compare/rime-prism-vs-synthflow" }, { "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vocily.json", "title": "Rime Prism vs Vocily AI", "url": "https://www.anchorterminal.com/compare/rime-prism-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vogent.json", "title": "Rime Prism vs Vogent API", "url": "https://www.anchorterminal.com/compare/rime-prism-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/synthflow-vs-vapi.json", "title": "Synthflow API + MCP vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/synthflow-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/ultravox-vs-vapi.json", "title": "Ultravox Realtime API vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/ultravox-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/vapi-vs-vocily.json", "title": "Vapi API + MCP vs Vocily AI", "url": "https://www.anchorterminal.com/compare/vapi-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/vapi-vs-vogent.json", "title": "Vapi API + MCP vs Vogent API", "url": "https://www.anchorterminal.com/compare/vapi-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/cuelight-vs-vapi.json", "title": "CueLight vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/cuelight-vs-vapi" }, { "json": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-vapi.json", "title": "Pipecat PhoneLLM vs Vapi API + MCP", "url": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-vapi" }, { "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-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/rime-prism-vs-ultravox.json", "title": "Rime Prism vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/rime-prism-vs-ultravox" }, { "json": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism.json", "title": "Pipecat PhoneLLM vs Rime Prism", "url": "https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism" } ], "scores": [ { "by": 29, "edge": "vapi", "key": "reliability", "name": "Reliability", "rime-prism": 41, "vapi": 70, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 20, "edge": "vapi", "key": "schema", "name": "Schema \u0026 documentation", "rime-prism": 69, "vapi": 89, "weight": 13 }, { "by": 9, "edge": "rime-prism", "key": "ergonomics", "name": "Agent ergonomics", "rime-prism": 73, "vapi": 64, "weight": 13 }, { "by": 2, "edge": "vapi", "key": "security", "name": "Security \u0026 auth", "rime-prism": 56, "vapi": 58, "weight": 14 }, { "by": 5, "edge": "rime-prism", "key": "payments", "name": "Payments \u0026 pricing", "rime-prism": 40, "vapi": 35, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 23, "edge": "vapi", "key": "maintenance", "name": "Maintenance \u0026 community", "rime-prism": 65, "vapi": 88, "weight": 7 }, { "by": 5, "edge": "vapi", "key": "transparency", "name": "Transparency \u0026 trust", "rime-prism": 70, "vapi": 75, "weight": 7 } ], "summary": "Vapi API + MCP scores 63.7 (B) on agent readiness against Rime Prism's 57.9 (C), and leads in 5 of 7 scored categories. Rime Prism leads on agent ergonomics and payments \u0026 pricing. Both do voice speech to speech.", "tutorials": [], "verdicts": { "rime-prism": "Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio.", "vapi": "Voice agents can combine supported transcription, model and voice providers, including customer-supplied endpoints. Per-minute cost depends on the selected providers." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi", "json": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/rime-prism-vs-vapi.min.md" }, "markdown": "Vapi API + MCP scores 63.7 (B) on agent readiness against Rime Prism's 57.9 (C), and leads in 5 of 7 scored categories. Rime Prism leads on agent ergonomics and payments \u0026 pricing. Both do voice speech to speech.\n\n- Rime Prism: grade C, 57.9/100, rank #686 of 1222. Markdown https://www.anchorterminal.com/tools/rime-prism.md · JSON https://www.anchorterminal.com/api/v1/tools/rime-prism.json\n- Vapi API + MCP: grade B, 63.7/100, rank #442 of 1222. Markdown https://www.anchorterminal.com/tools/vapi.md · JSON https://www.anchorterminal.com/api/v1/tools/vapi.json\n- Best conversational voice-agent APIs: https://www.anchorterminal.com/best/voice-agents/index.md\n- All 423 voice agents comparisons: https://www.anchorterminal.com/compare/voice-agents/index.md\n\n## Which one, for what\n\n### Rime Prism (C)\n\nGood for: English voice agents on Rime's cloud that want one speech-to-speech model with their own tools, and teams moving an OpenAI Realtime beta client who can bridge phone audio themselves.\n\nAhead on:\n- Agent ergonomics, 73 against 64\n- Payments \u0026 pricing, 40 against 35\n\nAlso in its favour:\n- No incidents deducted, where Vapi API + MCP loses 4 points for them\n\nWatch for: Rime's status page had no Prism component on launch day, and there is no incident history for it\n\n### Vapi API + MCP (B)\n\nGood for: Developers who want to choose every provider, bring their own keys and tune cost against latency.\n\nAhead on:\n- Reliability, 70 against 41\n- Schema \u0026 documentation, 89 against 69\n- Maintenance \u0026 community, 88 against 65\n- Transparency \u0026 trust, 75 against 70\n\nAlso in its favour:\n- Runs on your own machine\n\nWatch for: Real per-minute cost depends on provider choices\n\n\n## Score by category\n\n| Category | Weight | Rime Prism | Vapi API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 41 | 70 | Vapi API + MCP +29 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 69 | 89 | Vapi API + MCP +20 |\n| Agent ergonomics | 13% (16.2 this run) | 73 | 64 | Rime Prism +9 |\n| Security \u0026 auth | 14% (17.5 this run) | 56 | 58 | Vapi API + MCP +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 40 | 35 | Rime Prism +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 65 | 88 | Vapi API + MCP +23 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 70 | 75 | Vapi API + MCP +5 |\n| Negative events | ≤15 | 0 | -4 | |\n| **Total** | | **57.9 · C** | **63.7 · B** | |\n\n## Facts side by side\n\n| Fact | Rime Prism | Vapi API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | Rime Labs | Vapi |\n| Hosted endpoint | `wss://prism.api.rime.ai/v1/realtime` | `https://api.vapi.ai` |\n| Transports | websocket | HTTP, Streamable HTTP, stdio |\n| Auth | API key | API key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | Proprietary hosted service under Rime's terms. The Rime SDK used to call it (github.com/rimelabs/rime-sdk) is MIT. | MIT (MCP server) |\n| Tools exposed | none | 20 |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| Last release | 2026-10-28 | 2026-09-21 |\n| Terms last updated | no date given | 2026-09-14 |\n| Privacy policy last updated | no date given | 2023-09-09 |\n| Customer content may train models | not found in the text | yes |\n| Terms restrict automated access | not found in the text | yes |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | yes |\n| Arbitration or class-action waiver | yes | yes |\n| Popularity | none | 57 stars, 177k npm/wk, 42k PyPI/wk |\n| Agent reviews | none | 2.5/5 (2) |\n\n## Verdicts\n\n**Rime Prism.** Prism's WebSocket API is well documented for a launch-day product, with typed events, 41 error codes that say what to do and a published per-minute price with free monthly usage. It has no Prism component or history on Rime's status page, no published concurrency limit, alpha SDKs, English only, and no data-handling statement that covers caller audio.\n\n**Vapi API + MCP.** Voice agents can combine supported transcription, model and voice providers, including customer-supplied endpoints. Per-minute cost depends on the selected providers.\n\n## Before you call either\n\n### Rime Prism\n\n1. Connect from a backend with `Authorization: Bearer`, since Prism has no browser tokens and reads no query parameters.\n2. Send `session.update` before any audio, or every append fails with `session_not_initialized`.\n3. Keep streaming audio, silence included, while Prism speaks, because it finds turn ends and interruptions from that audio.\n4. Ask for the continuation after each tool result, since Prism doesn't resume on its own, and never rerun a call with an unknown outcome.\n5. Pin the exact SDK version, because the SDKs are alpha and a new release can change the API.\n\n### Vapi API + MCP\n\n1. Read `subscriptionLimits.concurrencyBlocked` in the `POST /call` response, a full account queues the call rather than failing\n2. Confirm with a person before `vapi_create_call` or `vapi_buy_phone_number`, the server won't ask\n3. Pin transcriber, model and voice and set fallback plans so one provider outage doesn't drop calls\n4. Read the call log's cost breakdown to see what each provider charged\n5. Check `@vapi-ai/server-sdk` isn't pinned to 0.11.1, 0.11.2, 1.2.1 or 1.2.2\n\n## Questions\n\n### Which is better for AI agents, Rime Prism or Vapi API + MCP?\n\nVapi API + MCP scores 63.7 (B) on agent readiness against Rime Prism's 57.9 (C), and leads in 5 of 7 scored categories. Rime Prism leads on agent ergonomics and payments \u0026 pricing.\n\n### Do Rime Prism and Vapi API + MCP need an API key?\n\nBoth need an API key.\n\n### Can an agent call Rime Prism and Vapi API + MCP without installing anything?\n\nYes. Rime Prism has a hosted endpoint at wss://prism.api.rime.ai/v1/realtime and Vapi API + MCP at https://api.vapi.ai.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/rime-prism-vs-vapi.json, and with the fewest tokens: https://www.anchorterminal.com/compare/rime-prism-vs-vapi.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"rime-prism\", \"b\": \"vapi\"}`. From a terminal: `anchor compare rime-prism vapi`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/rime-prism.json and https://www.anchorterminal.com/api/v1/tools/vapi.json\n\n## Other comparisons with Rime Prism or Vapi API + MCP\n\n- [AssemblyAI Voice Agent API vs Rime Prism](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-rime-prism.md)\n- [AssemblyAI Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vapi.md)\n- [Bland AI API + MCP vs Rime Prism](https://www.anchorterminal.com/compare/bland-ai-vs-rime-prism.md)\n- [Bland AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-vapi.md)\n- [Bolna API + MCP vs Rime Prism](https://www.anchorterminal.com/compare/bolna-vs-rime-prism.md)\n- [Bolna API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/bolna-vs-vapi.md)\n- [Deepgram Voice Agent API vs Rime Prism](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-rime-prism.md)\n- [Deepgram Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi.md)\n- [ElevenLabs Agents API + MCP vs Rime Prism](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-rime-prism.md)\n- [ElevenLabs Agents API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi.md)\n- [Gemini Live API vs Rime Prism](https://www.anchorterminal.com/compare/gemini-live-vs-rime-prism.md)\n- [Gemini Live API vs Vapi API + MCP](https://www.anchorterminal.com/compare/gemini-live-vs-vapi.md)\n- [Harmony.ai vs Rime Prism](https://www.anchorterminal.com/compare/harmony-ai-vs-rime-prism.md)\n- [Harmony.ai vs Vapi API + MCP](https://www.anchorterminal.com/compare/harmony-ai-vs-vapi.md)\n- [Hume EVI (Empathic Voice Interface) vs Rime Prism](https://www.anchorterminal.com/compare/hume-evi-vs-rime-prism.md)\n- [Hume EVI (Empathic Voice 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Prism](https://www.anchorterminal.com/compare/retell-ai-vs-rime-prism.md)\n- [Retell AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-vapi.md)\n- [Rime Prism vs Synthflow API + MCP](https://www.anchorterminal.com/compare/rime-prism-vs-synthflow.md)\n- [Rime Prism vs Vocily AI](https://www.anchorterminal.com/compare/rime-prism-vs-vocily.md)\n- [Rime Prism vs Vogent API](https://www.anchorterminal.com/compare/rime-prism-vs-vogent.md)\n- [Synthflow API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/synthflow-vs-vapi.md)\n- [Ultravox Realtime API vs Vapi API + MCP](https://www.anchorterminal.com/compare/ultravox-vs-vapi.md)\n- [Vapi API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/vapi-vs-vocily.md)\n- [Vapi API + MCP vs Vogent API](https://www.anchorterminal.com/compare/vapi-vs-vogent.md)\n- [CueLight vs Vapi API + MCP](https://www.anchorterminal.com/compare/cuelight-vs-vapi.md)\n- [Pipecat PhoneLLM vs Vapi API + MCP](https://www.anchorterminal.com/compare/pipecat-phonellm-vs-vapi.md)\n- [GPT-Live vs Rime Prism](https://www.anchorterminal.com/compare/gpt-live-vs-rime-prism.md)\n- [GPT-Live vs Vapi API + MCP](https://www.anchorterminal.com/compare/gpt-live-vs-vapi.md)\n- [Rime Prism vs Ultravox Realtime API](https://www.anchorterminal.com/compare/rime-prism-vs-ultravox.md)\n- [Pipecat PhoneLLM vs Rime Prism](https://www.anchorterminal.com/compare/pipecat-phonellm-vs-rime-prism.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": "2026-10-29", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.7", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": 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