{ "data": { "a": { "slug": "elevenlabs-agents", "name": "ElevenLabs Agents API + MCP", "vendor": "ElevenLabs", "vendorUrl": "https://elevenlabs.io", "kind": "http-api", "category": "voice-agents", "summary": "ElevenAgents (formerly Conversational AI) runs hosted voice agents as a pipeline of a fine-tuned ElevenLabs ASR model, an LLM of your choice or your own, ElevenLabs TTS and a proprietary turn-taking model.", "url": "https://www.anchorterminal.com/tools/elevenlabs-agents", "markdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-agents.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/elevenlabs-agents.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json", "repo": "https://github.com/elevenlabs/packages", "license": "MIT (SDKs)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.elevenlabs.io/v1/convai", "packages": [ { "registry": "npm", "name": "@elevenlabs/client" }, { "registry": "npm", "name": "@elevenlabs/react" }, { "registry": "pypi", "name": "elevenlabs" } ], "auth": "mixed", "authNotes": "`xi-api-key` header for the management API. Public agents can be joined from a browser with just the agent ID. Private agents need a signed URL or conversation token minted server-side. The hosted MCP at `https://api.elevenlabs.io/v1/mcp` signs in with OAuth.", "pricing": "freemium", "pricingNotes": "Billed per call minute, separate from the credit pool. Free includes 15 minutes, Starter $6 75, Creator $22 275, Pro $99 1,238, Scale $299 3,738 and Business $990 12,375. Extra minutes cost $0.08, burst minutes above the concurrency cap $0.16, and text messages $0.003 each. LLM usage is billed on top at the model's rate, and your telephony provider bills you directly (https://elevenlabs.io/pricing/agents).", "priceSummary": "$22 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 114, "npmWeekly": 1231322, "pypiWeekly": 2223099, "asOf": "2026-09-30" }, "docsUrl": "https://elevenlabs.io/docs/eleven-agents/overview", "llmsTxt": "https://elevenlabs.io/docs/llms.txt", "openapi": "https://api.elevenlabs.io/openapi.json", "registryName": "io.elevenlabs/mcp", "capabilities": [ "voice.agent", "voice.pipeline", "voice.tools", "voice.telephony" ], "tags": [ "hosted", "freemium", "free-tier", "closed-source", "python", "typescript", "openapi", "llms-txt", "mcp", "pipeline", "webhooks", "enterprise" ], "lastRelease": "2026-09-29", "graded": true, "anchor": { "graded": true, "score": 71.5, "grade": "BB", "agentReady": true, "rank": 83, "ranked": true, "rankOf": 452, "categoryRank": 1, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 85, "payments": 35, "reliability": 60, "schema": 92, "security": 76, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "API keys scoped to endpoint groups, with per-key credit limits and service accounts. $0.08 a minute excludes LLM tokens and carrier minutes.", "strengths": [ "API keys scoped to endpoint groups, with per-key credit limits and service accounts", "Hosted MCP server that signs in with OAuth, with EU, India and Singapore endpoints", "Public OpenAPI, llms.txt and an errors page with codes, fixes and request IDs", "Per-agent retention in days and per-agent zero retention mode", "Weekly changelog entries and SDKs for Python, JavaScript and mobile" ], "weaknesses": [ "$0.08 a minute excludes LLM tokens and carrier minutes", "At least six incidents since July where agent calls failed or didn't start", "Conversation data kept 2 years by default", "Audit logs and HIPAA BAAs only on Enterprise", "No SLA on self-serve plans" ], "agentNotes": [ "Create a key scoped to the agents endpoints with a credit limit before handing it to an agent", "Back off exponentially on `rate_limit_exceeded`, and wait for calls to finish on `concurrent_limit_exceeded`", "Use signed URLs or conversation tokens for private agents instead of exposing the API key", "Set `platform_settings.privacy.retention_days` where you don't need 2 years of history", "Pick a low-latency LLM, the pipeline waits on it every turn" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "BB", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 71.5 } ], "editorialScores": { "ergonomics": 77, "maintenance": 85, "payments": 35, "reliability": 60, "schema": 92, "security": 76, "transparency": 65 }, "provenanceScore": 92 }, "connect": { "http": "curl -X POST https://api.elevenlabs.io/v1/convai/agents/create -H \"xi-api-key: $ELEVENLABS_API_KEY\" \\\n -H \"content-type: application/json\" \\\n -d '{\"conversation_config\":{\"agent\":{\"first_message\":\"Hi, how can I help?\",\"prompt\":{\"prompt\":\"You take restaurant bookings.\"}}}}'", "claudeCode": "claude mcp add --transport http elevenlabs https://api.elevenlabs.io/v1/mcp" }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/elevenlabs-agents" }, "sameCompany": [ "elevenlabs-music", "elevenlabs-scribe", "elevenlabs-tts", "elevenlabs-voice-cloning" ], "area": "voice", "unitPrices": [ { "item": "Agent call", "unit": "call-minute", "usd": 0.08, "note": "platform fee only, LLM and carrier extra" }, { "item": "Burst call above concurrency", "unit": "call-minute", "usd": 0.16 }, { "item": "Text message", "unit": "message", "usd": 0.003 }, { "item": "Creator plan", "unit": "month", "usd": 22, "note": "275 call minutes, 10 concurrent calls" }, { "item": "Pro plan", "unit": "month", "usd": 99, "note": "1,238 call minutes, 20 concurrent calls" } ], "provenance": { "legalEntity": "Eleven Labs Inc.", "domain": "elevenlabs.io", "domainRegistered": "2021-12-15", "endpointOnVendorDomain": true, "terms": "https://elevenlabs.io/terms-of-use", "privacy": "https://elevenlabs.io/privacy-policy", "statusPage": "https://status.elevenlabs.io", "changelog": "https://elevenlabs.io/docs/changelog", "securityTxt": "valid", "checked": "2026-09-30", "score": 92 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/elevenlabs-agents.json", "live": { "slug": "elevenlabs-agents", "probe": { "target": "https://api.elevenlabs.io/v1/convai", "method": "get", "lastAt": "2026-10-04T23:48:07.777271252Z", "lastOk": true, "lastStatus": 404, "lastMs": 145, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 151, "p95ms24h": 247, "samples24h": 272, "samples30d": 1100, "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": 270, "ok": 270 } ] }, "vendorStatus": { "page": "https://status.elevenlabs.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:49:10.710640394Z" }, "versions": [ { "registry": "github", "name": "elevenlabs/packages", "version": "@elevenlabs/react-native@1.2.28", "released": "2026-09-29", "seenAt": "2026-10-04T16:26:08.660019282Z" }, { "registry": "npm", "name": "@elevenlabs/client", "version": "1.26.0", "seenAt": "2026-10-04T16:26:04.721219688Z" }, { "registry": "npm", "name": "@elevenlabs/react", "version": "1.16.0", "seenAt": "2026-10-04T16:26:07.266415961Z" }, { "registry": "pypi", "name": "elevenlabs", "version": "2.70.0", "released": "2026-09-28", "seenAt": "2026-10-04T16:26:08.54621656Z" } ], "githubStars": 114, "npmWeekly": 1297130, "pypiWeekly": 2247596, "securityTxt": { "url": "https://elevenlabs.io/.well-known/security.txt", "state": "valid", "expires": "2027-03-01T00:00:00.000Z", "checkedAt": "2026-10-04T15:15:51.968224287Z" }, "llmsTxt": { "url": "https://elevenlabs.io/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:44.978252232Z" }, "domain": { "domain": "elevenlabs.io", "checkedAt": "2026-10-04T13:07:28.958673807Z" }, "pages": [ { "url": "https://elevenlabs.io/docs/changelog", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:44:26.923147888Z", "changedAt": "2026-10-04T15:44:26.923147888Z", "fingerprint": "8e3b6c4cf3d2" }, { "url": "https://elevenlabs.io/pricing/agents", "kind": "pricing", "status": 200, "checkedAt": "2026-10-04T15:44:32.960517089Z", "changedAt": "2026-10-02T15:20:53.807548529Z", "fingerprint": "95716cace61a" }, { "url": "https://elevenlabs.io/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-04T15:44:36.955540789Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "469dd3f024fd" }, { "url": "https://elevenlabs.io/terms-of-use", "kind": "terms", "status": 200, "checkedAt": "2026-10-04T15:44:38.961637386Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "ea0ee2e19b45" } ], "updatedAt": "2026-10-04T23:49:10.710640394Z" } }, "b": { "slug": "retell-ai", "name": "Retell AI API + MCP", "vendor": "Retell AI", "vendorUrl": "https://www.retellai.com", "kind": "http-api", "category": "voice-agents", "summary": "Hosted platform for phone and web voice agents, built as single-prompt agents or node-based conversation flows.", "url": "https://www.anchorterminal.com/tools/retell-ai", "markdownUrl": "https://www.anchorterminal.com/tools/retell-ai.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/retell-ai.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/retell-ai.json", "repo": "https://github.com/RetellAI/retell-typescript-sdk", "license": "Apache-2.0 (SDKs)", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.retellai.com", "packages": [ { "registry": "npm", "name": "retell-sdk" }, { "registry": "npm", "name": "retell-client-js-sdk" }, { "registry": "pypi", "name": "retell-sdk" } ], "auth": "api-key", "authNotes": "Bearer API key for the REST API and the hosted MCP server at `https://mcp.retellai.com`. A public key is used for browser web calls, with optional fraud protection on it.", "pricing": "usage", "pricingNotes": "Pay as you go with $10 of free credits, priced per component. Voice infrastructure $0.055 a minute, Retell and most third-party voices $0.015 (ElevenLabs $0.04), telephony $0.015 on Retell numbers, and the LLM from $0.0016 to $0.32 a minute depending on model. The vendor puts the total at $0.07 to $0.31 a minute. Speech-to-speech models run $0.07 (GPT Realtime mini) to $0.38 a minute. Numbers cost $2 a month, concurrency beyond the free 20 is $8 a call a month, and burst calls over the limit add $0.10 a minute. Enterprise pricing is custom (https://www.retellai.com/pricing).", "priceSummary": "$2 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402 support in the docs, pricing page or MCP docs (checked 2026-09-30).", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 62, "npmWeekly": 242906, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.retellai.com", "llmsTxt": "https://docs.retellai.com/llms.txt", "openapi": "https://docs.retellai.com/openapi-final.yaml", "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": "2026-09-14", "graded": true, "anchor": { "graded": true, "score": 69.4, "grade": "B", "agentReady": false, "rank": 114, "ranked": true, "rankOf": 452, "categoryRank": 2, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 85, "payments": 40, "reliability": 60, "schema": 92, "security": 76, "transparency": 79 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Published per-minute price for every component, from $0.07 a minute all in. Call data kept indefinitely unless retention is set per agent.", "strengths": [ "Published per-minute price for every component, from $0.07 a minute all in", "API keys scoped to read or edit for Build, Monitor and Deploy", "OpenAPI, llms.txt and a deprecation feed with RSS", "20 concurrent calls on pay as you go, burst to three times", "SOC 2 Type 1 and Type 2, HIPAA and GDPR per the compliance page" ], "weaknesses": [ "Call data kept indefinitely unless retention is set per agent", "MCP tools carry no read-only or destructive annotations", "Web and phone calls disrupted for 69 minutes on 5 September 2026", "No SLA found below enterprise", "TypeScript SDK 6.0.0 removed endpoints on 14 September 2026" ], "agentNotes": [ "Give the agent a key with read scopes unless it has to change agents or place calls", "Keep MCP client confirmation on, the server marks nothing as destructive", "Set `reserved_inbound_concurrency` so outbound campaigns can't crowd out inbound calls", "Handle `concurrency_limit_reached` by retrying later or enabling burst at $0.10 a minute extra", "Set a data retention period on each agent that handles personal data" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 3.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "B", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 69.4 } ], "editorialScores": { "ergonomics": 60, "maintenance": 85, "payments": 40, "reliability": 60, "schema": 92, "security": 76, "transparency": 75 }, "provenanceScore": 82 }, "connect": { "http": "curl -X POST https://api.retellai.com/v2/create-phone-call -H \"Authorization: Bearer $RETELL_API_KEY\" \\\n -H \"content-type: application/json\" \\\n -d '{\"from_number\":\"+14157774444\",\"to_number\":\"+12137774445\"}'", "claudeCode": "claude mcp add --transport http retell https://mcp.retellai.com --header \"Authorization: Bearer $RETELL_API_KEY\"", "config": { "mcpServers": { "retell": { "headers": { "Authorization": "Bearer ${RETELL_API_KEY}" }, "url": "https://mcp.retellai.com" } } } }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/retell-ai" }, "area": "voice", "unitPrices": [ { "item": "Retell voice infrastructure", "unit": "call-minute", "usd": 0.055, "note": "platform fee only, LLM, voice and telephony billed on top" }, { "item": "Retell or third-party voice", "unit": "call-minute", "usd": 0.015, "note": "ElevenLabs voices $0.04" }, { "item": "Retell telephony", "unit": "call-minute", "usd": 0.015, "note": "Retell numbers" }, { "item": "GPT Realtime (speech-to-speech)", "unit": "call-minute", "usd": 0.345 }, { "item": "GPT Realtime mini (speech-to-speech)", "unit": "call-minute", "usd": 0.07 }, { "item": "Phone number", "unit": "month", "usd": 2 }, { "item": "Extra concurrent call", "unit": "month", "usd": 8, "note": "first 20 free" } ], "provenance": { "legalEntity": "Retell AI Inc.", "domain": "retellai.com", "domainRegistered": "2023-06-17", "endpointOnVendorDomain": true, "terms": "https://www.retellai.com/legal/terms-of-service", "privacy": "https://www.retellai.com/legal/privacy-policy", "statusPage": "https://status.retellai.com", "changelog": "https://www.retellai.com/changelog", "securityTxt": "none", "checked": "2026-09-30", "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/retell-ai.json", "live": { "slug": "retell-ai", "probe": { "target": "https://api.retellai.com", "method": "get", "lastAt": "2026-10-04T23:48:15.179652298Z", "lastOk": true, "lastStatus": 200, "lastMs": 407, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 400, "p95ms24h": 454, "samples24h": 272, "samples30d": 1100, "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": 270, "ok": 270 } ] }, "vendorStatus": { "page": "https://status.retellai.com", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:49:26.900883008Z" }, "versions": [ { "registry": "github", "name": "RetellAI/retell-typescript-sdk", "version": "v6.0.1", "released": "2026-09-14", "seenAt": "2026-10-04T16:38:33.194361249Z" }, { "registry": "npm", "name": "retell-client-js-sdk", "version": "3.0.2", "seenAt": "2026-10-04T16:38:31.197486147Z" }, { "registry": "npm", "name": "retell-sdk", "version": "6.0.1", "seenAt": "2026-10-04T16:38:30.795021522Z" }, { "registry": "pypi", "name": "retell-sdk", "version": "6.0.1", "released": "2026-09-14", "seenAt": "2026-10-04T16:38:33.004573445Z" } ], "githubStars": 62, "npmWeekly": 266545, "pypiWeekly": 177027, "securityTxt": { "url": "https://retellai.com/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:57.649934082Z" }, "llmsTxt": { "url": "https://docs.retellai.com/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:11.792238049Z" }, "domain": { "domain": "retellai.com", "registered": "2023-06-17", "source": "https://rdap.verisign.com/com/v1/domain/retellai.com", "checkedAt": "2026-10-04T13:07:24.959713497Z" }, "pages": [ { "url": "https://www.retellai.com/changelog", "kind": "changelog", "status": 304, "checkedAt": "2026-10-04T15:51:53.701641361Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "69acd4d4ac18" }, { "url": "https://docs.retellai.com/deprecation-notice/2026/04-03_model_replacements", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-04T15:43:57.067738394Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "5f44b93c3852" }, { "url": "https://docs.retellai.com/deprecation-notice/2026/07-20_legacy_mcp_server", "kind": "deprecations", "status": 200, "checkedAt": "2026-10-04T15:43:59.299839944Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "c334d3256a05" }, { "url": "https://www.retellai.com/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:51:59.747888411Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "9658d88f5dcd" }, { "url": "https://www.retellai.com/legal/privacy-policy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:51:55.742254294Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "e80c24eba4d4" }, { "url": "https://www.retellai.com/legal/terms-of-service", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:51:57.730861562Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "106049026b59" } ], "updatedAt": "2026-10-04T23:49:26.900883008Z" } }, "summary": "ElevenLabs Agents API + MCP has a score of 71.5 (BB) against Retell AI API + MCP's 69.4 (B). Both do voice agent. The largest gap is agent ergonomics, 17 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai", "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.md", "slim": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.min.md" }, "markdown": "ElevenLabs Agents API + MCP has a score of 71.5 (BB) against Retell AI API + MCP's 69.4 (B). Both do voice agent. The largest gap is agent ergonomics, 17 points.\n\n- ElevenLabs Agents API + MCP: grade BB, 71.5/100, rank #83 of 452. Markdown https://www.anchorterminal.com/tools/elevenlabs-agents.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json\n- Retell AI API + MCP: grade B, 69.4/100, rank #114 of 452. Markdown https://www.anchorterminal.com/tools/retell-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/retell-ai.json\n\n## Which one, for what\n\nPick ElevenLabs Agents API + MCP for agent ergonomics (+17).\n\nPick Retell AI API + MCP for payments \u0026 pricing (+5).\n\n## Score by category\n\n| Category | Weight | ElevenLabs Agents API + MCP | Retell AI API + MCP | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 60 | 60 | even |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 92 | 92 | even |\n| Agent ergonomics | 13% (16.2 this run) | 77 | 60 | ElevenLabs Agents API + MCP +17 |\n| Security \u0026 auth | 14% (17.5 this run) | 76 | 76 | even |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 40 | Retell AI API + MCP +5 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 85 | even |\n| Transparency \u0026 trust | 7% (8.8 this run) | 79 | 79 | even |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **71.5 · BB** | **69.4 · B** | |\n\n## Facts side by side\n\n| Fact | ElevenLabs Agents API + MCP | Retell AI API + MCP |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | ElevenLabs | Retell AI |\n| Hosted endpoint | `https://api.elevenlabs.io/v1/convai` | `https://api.retellai.com` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Pay per use |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Apache-2.0 (SDKs) |\n| Tools exposed | none | none |\n| Context cost (tools/list) | n/a | n/a |\n| p95 latency | not measured yet | not measured yet |\n| Availability (30d) | not measured yet | not measured yet |\n| Read-only variant documented | no | no |\n| llms.txt | yes | yes |\n| MCP registry | `io.elevenlabs/mcp` | not listed |\n| Last release | 2026-09-29 | 2026-09-14 |\n| Popularity | 114 stars, 1.2M npm/wk, 2.2M PyPI/wk | 62 stars, 243k npm/wk |\n| Agent reviews | 3.5/5 (2) | 3.5/5 (2) |\n\n## Verdicts\n\n**ElevenLabs Agents API + MCP.** API keys scoped to endpoint groups, with per-key credit limits and service accounts. $0.08 a minute excludes LLM tokens and carrier minutes.\n\n**Retell AI API + MCP.** Published per-minute price for every component, from $0.07 a minute all in. Call data kept indefinitely unless retention is set per agent.\n\n## Before you call either\n\n### ElevenLabs Agents API + MCP\n\n1. Create a key scoped to the agents endpoints with a credit limit before handing it to an agent\n2. Back off exponentially on `rate_limit_exceeded`, and wait for calls to finish on `concurrent_limit_exceeded`\n3. Use signed URLs or conversation tokens for private agents instead of exposing the API key\n4. Set `platform_settings.privacy.retention_days` where you don't need 2 years of history\n5. Pick a low-latency LLM, the pipeline waits on it every turn\n\n### Retell AI API + MCP\n\n1. Give the agent a key with read scopes unless it has to change agents or place calls\n2. Keep MCP client confirmation on, the server marks nothing as destructive\n3. Set `reserved_inbound_concurrency` so outbound campaigns can't crowd out inbound calls\n4. Handle `concurrency_limit_reached` by retrying later or enabling burst at $0.10 a minute extra\n5. Set a data retention period on each agent that handles personal data\n\n## Other comparisons with ElevenLabs Agents API + MCP or Retell AI API + MCP\n\n- [Bland AI API + MCP vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-elevenlabs-agents.md)\n- [Bland AI API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-retell-ai.md)\n- [Bolna API + MCP vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents.md)\n- [Bolna API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bolna-vs-retell-ai.md)\n- [Deepgram Voice Agent API vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-elevenlabs-agents.md)\n- [Deepgram Voice Agent API vs Retell AI API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-retell-ai.md)\n- [ElevenLabs Agents API + MCP vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-hume-evi.md)\n- [ElevenLabs Agents API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-synthflow.md)\n- [ElevenLabs Agents API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-ultravox.md)\n- [ElevenLabs Agents API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi.md)\n- [ElevenLabs Agents API + MCP vs Vogent API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vogent.md)\n- [Hume EVI (Empathic Voice Interface) vs Retell AI API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-retell-ai.md)\n- [Retell AI API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-synthflow.md)\n- [Retell AI API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/retell-ai-vs-ultravox.md)\n- [Retell AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-vapi.md)\n- [Retell AI API + MCP vs Vogent API](https://www.anchorterminal.com/compare/retell-ai-vs-vogent.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "docs": "https://www.anchorterminal.com/docs/", "generatedAt": "2026-10-04", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.3", "openapi": "https://www.anchorterminal.com/openapi.json", "preview": false, "run": "2026-10-01", "runLabel": "October 2026 research run" }, "page": { "breadcrumbs": [ { "name": "Home", "url": "https://www.anchorterminal.com/" }, { "name": "Compare", "url": "https://www.anchorterminal.com/compare/" }, { "name": "ElevenLabs Agents API + MCP vs Retell AI API + MCP", "url": "" } ], "description": "ElevenLabs Agents API + MCP has a score of 71.5 (BB) against Retell AI API + MCP's 69.4 (B). Both do voice agent. The largest gap is agent ergonomics, 17 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "ElevenLabs Agents API + MCP BB 71.5", "Retell AI API + MCP B 69.4", "scores" ], "h1": "ElevenLabs Agents API + MCP vs Retell AI API + MCP", "image": "https://www.anchorterminal.com/assets/og/compare-elevenlabs-agents-vs-retell-ai.png", "path": "/compare/elevenlabs-agents-vs-retell-ai", "published": "2026-10-01", "section": "tools", "title": "ElevenLabs Agents API + MCP vs Retell AI API + MCP for AI agents", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai" }, "tokens": { "markdown": 1650, "slim": 330 }, "version": 1 }