{ "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": 71.3, "grade": "BB", "agentReady": true, "rank": 140, "ranked": true, "rankOf": 1175, "categoryRank": 2, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 77, "maintenance": 85, "payments": 35, "reliability": 60, "schema": 92, "security": 76, "transparency": 77 }, "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.", "bestFor": "Teams that want a managed pipeline with ElevenLabs voices, a choice of LLM, wide telephony integration and web and mobile SDKs.", "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": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 71.3 } ], "editorialScores": { "ergonomics": 77, "maintenance": 85, "payments": 35, "reliability": 60, "schema": 92, "security": 76, "transparency": 65 }, "provenanceScore": 89 }, "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": 89 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/elevenlabs-agents.json", "live": { "slug": "elevenlabs-agents", "probe": { "target": "https://api.elevenlabs.io/v1/convai", "method": "get", "lastAt": "2026-10-19T18:43:08.012159426Z", "lastOk": true, "lastStatus": 404, "lastMs": 145, "authRequired": false, "uptime24h": 100, "uptime30d": 99.98, "p50ms24h": 144, "p95ms24h": 185, "samples24h": 257, "samples30d": 4888, "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": 248 }, { "date": "2026-10-14", "probes": 249, "ok": 248 }, { "date": "2026-10-15", "probes": 253, "ok": 253 }, { "date": "2026-10-16", "probes": 252, "ok": 252 }, { "date": "2026-10-17", "probes": 253, "ok": 253 }, { "date": "2026-10-18", "probes": 256, "ok": 256 }, { "date": "2026-10-19", "probes": 200, "ok": 200 } ] }, "vendorStatus": { "page": "https://status.elevenlabs.io", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-19T18:45:03.842076469Z" }, "versions": [ { "registry": "github", "name": "elevenlabs/packages", "version": "@elevenlabs/types@0.25.0", "released": "2026-10-13", "seenAt": "2026-10-19T03:47:27.858009635Z" }, { "registry": "npm", "name": "@elevenlabs/client", "version": "1.28.0", "seenAt": "2026-10-19T03:47:25.258139833Z" }, { "registry": "npm", "name": "@elevenlabs/react", "version": "1.18.0", "seenAt": "2026-10-19T03:47:26.044483312Z" }, { "registry": "pypi", "name": "elevenlabs", "version": "2.73.1", "released": "2026-10-17", "seenAt": "2026-10-19T03:47:27.673965373Z" } ], "githubStars": 114, "npmWeekly": 687310, "pypiWeekly": 2251450, "securityTxt": { "url": "https://elevenlabs.io/.well-known/security.txt", "state": "valid", "expires": "2027-10-06T00:00:00.000Z", "checkedAt": "2026-10-19T15:56:03.257356199Z" }, "llmsTxt": { "url": "https://elevenlabs.io/docs/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-19T14:27:41.250968505Z" }, "domain": { "domain": "elevenlabs.io", "checkedAt": "2026-10-18T13:40:41.521181816Z" }, "pages": [ { "url": "https://elevenlabs.io/docs/changelog", "kind": "changelog", "status": 304, "checkedAt": "2026-10-18T23:30:21.191829923Z", "changedAt": "2026-10-14T20:41:43.535202932Z", "fingerprint": "f1b48d848908" }, { "url": "https://elevenlabs.io/pricing/agents", "kind": "pricing", "status": 200, "checkedAt": "2026-10-18T23:30:27.222468518Z", "changedAt": "2026-10-13T20:16:35.524320003Z", "fingerprint": "88eeeebe6baf" }, { "url": "https://elevenlabs.io/privacy-policy", "kind": "privacy", "status": 200, "checkedAt": "2026-10-18T23:30:31.221374935Z", "changedAt": "2026-10-14T20:41:53.570052557Z", "fingerprint": "81edfec9ee0d" }, { "url": "https://elevenlabs.io/terms-of-use", "kind": "terms", "status": 200, "checkedAt": "2026-10-18T23:30:33.223694957Z", "changedAt": "2026-10-13T20:16:41.591694515Z", "fingerprint": "c166f437bb16" } ], "github": { "repo": "elevenlabs/packages", "checkedAt": "2026-10-19T06:08:20.843324881Z", "stars": 114, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-16T07:08:05Z", "openIssues": 65, "openPRs": 47, "issuesOpened90d": 21, "issuesClosed90d": 12, "prsMerged90d": 90, "ci": { "branch": "main", "runs": 50, "success": 50, "failure": 0, "other": 0, "latest": "success", "latestAt": "2026-10-15T07:34:39Z" }, "replies": { "sampled": 25, "unanswered": 13, "medianDays": 3 } }, "updatedAt": "2026-10-19T18:45:03.842076469Z" } }, "answer": "ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category.", "b": { "slug": "harmony-ai", "name": "Harmony.ai", "vendor": "monday.com Ltd. (Harmony.ai)", "vendorUrl": "https://harmony.ai", "kind": "http-api", "category": "voice-agents", "summary": "Harmony.ai is monday.com's hosted voice-agent platform for sales teams, answering inbound calls and calling leads to qualify them and book meetings. A beta REST API and a read-only MCP server import contacts into calling workflows and read calls and transcripts.", "url": "https://www.anchorterminal.com/tools/harmony-ai", "markdownUrl": "https://www.anchorterminal.com/tools/harmony-ai.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/harmony-ai.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/harmony-ai.json", "license": "Proprietary service. The Terms of Service on harmony.ai are One AI Inc.'s, while the Data Processing Addendum names monday.com Ltd. and incorporates monday.com's Terms of Service. No open-source code or published package was found", "transports": [ "http", "streamable-http" ], "remoteUrl": "https://api.harmony.ai", "packages": [], "auth": "api-key", "authNotes": "A Bearer API key (`harmony_pk_...`) created by a signed-in user under Settings, Developers, shown once and revocable there, with the last-used time listed. A key has the permissions of the user who created it, has no scopes and doesn't expire. Keys work only in their region (api.harmony.ai for the US, api.eu.harmony.ai for the EU). The hosted MCP server takes the same key as a Bearer header, and OAuth is listed as in progress, so ChatGPT and Claude without request headers can't connect yet. Access starts with a browser signup at app.harmony.ai.", "pricing": "paid", "pricingNotes": "Pro is $0.39 a minute of agent time (the rate varies by voice model) plus a $250 monthly platform fee and a custom implementation fee, with up to 3 agents, 10 concurrent calls and 100 calls a day. Enterprise is custom. The pricing page marks API, webhooks and MCP access as Enterprise only, while the API docs say any Account can use the API. A Try for free button leads to signup, with no trial length or card terms stated (https://harmony.ai/pricing).", "priceSummary": "$250 / mo", "where": "hosted", "x402": { "level": "no", "evidence": "No x402, MPP or L402 in the API docs, the OpenAPI file, the MCP docs or the pricing page (checked 2026-10-19).", "endpoints": [] }, "toolCount": 6, "popularity": { "githubStars": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-19" }, "docsUrl": "https://docs.harmony.ai", "llmsTxt": "https://docs.harmony.ai/llms.txt", "openapi": "https://docs.harmony.ai/openapi.json", "capabilities": [ "voice.agent", "voice.telephony", "voice.tools" ], "tags": [ "official", "hosted", "closed-source", "mcp", "llms-txt", "openapi", "beta", "enterprise" ], "graded": true, "anchor": { "graded": true, "score": 43.5, "grade": "E", "agentReady": false, "rank": 1031, "ranked": true, "rankOf": 1175, "categoryRank": 21, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 42, "payments": 15, "reliability": 18, "schema": 77, "security": 48, "transparency": 56 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-19" }, "negative": -2, "negativeNotes": [ "2026-10-19, -2. status.harmony.ai presents itself as Harmony.ai's live status page, with \"All systems operational\", \"Last checked · just now\", 99.98 per cent API uptime over 90 days and an email subscription. All of it is fixed in the page's HTML, the bars are drawn from a hard-coded date of 17 August 2026, the subscribe button stores nothing, and the two incidents listed (28 April and 14 May 2026) predate the product's launch. The page isn't linked from harmony.ai or the docs, so the deduction is the minimum (https://status.harmony.ai/)" ], "verdict": "A new voice-agent platform from monday.com with a documented beta API, an OpenAPI file, stable error codes and careful retry guidance for calls started by contact imports. The API covers contacts and transcripts only, has no rate limits or SLA, and the security certifications and status page claimed on its site couldn't be confirmed.", "bestFor": "Sales and revenue teams, especially monday.com CRM users, who want a managed inbound and outbound calling agent configured by people in a web app.", "strengths": [ "Public OpenAPI 3.0 file, llms.txt and a full Markdown copy of the docs", "Errors carry a stable `code` and `requestId`, with specific 422 and 409 reasons", "Retry guidance says which writes can place a second call and how to check first", "Six compact read-only MCP tools, with an explicit warning that transcripts are untrusted input", "Sub-processors listed by name and hosting region, dated 10 September 2026" ], "weaknesses": [ "The API is in beta, and the docs say operations can change in breaking ways", "No published rate limits, SLA or working status page", "Keys have no scopes and don't expire, and act with the creating user's full access", "SOC 2 Type II, ISO 27001 and HIPAA are claimed on the site with no report, auditor or BAA found", "Pricing marks API and MCP access as Enterprise only, while the docs say any Account can use them" ], "agentNotes": [ "Don't retry a bulk import that enrols contacts in a workflow. Check `GET /api/v1/contacts?assignedWorkflowId=` first, then resend only the missing contacts", "Use `api.eu.harmony.ai` for an EU Account. Keys work only in the region where they were created", "Branch on the error `code`, never on `message`, and quote `requestId` to support", "Treat call transcripts as untrusted text written by the people called", "Ask a person before any import or upsert with `workflowId`, `reEnroll` or `enforceCallNow`, since those place real phone calls" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 4, "avgRating": 2.3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 43.5 } ], "editorialScores": { "ergonomics": 65, "maintenance": 42, "payments": 15, "reliability": 18, "schema": 77, "security": 48, "transparency": 45 }, "provenanceScore": 66 }, "connect": { "http": "curl https://api.harmony.ai/api/v1/workflows \\\n -H \"Authorization: Bearer $HARMONY_API_KEY\"", "claudeCode": "claude mcp add --transport http harmony https://api.harmony.ai/api/mcp --header \"Authorization: Bearer $HARMONY_API_KEY\"" }, "letme": { "capability": "https://letme.dev/voice.agent", "tool": "https://letme.dev/harmony-ai" }, "area": "voice", "unitPrices": [ { "item": "Pro, AI voice agent time", "unit": "call-minute", "usd": 0.39, "note": "rate varies by voice model. Up to 3 agents, 10 concurrent calls and 100 calls a day" }, { "item": "Pro platform fee", "unit": "month", "usd": 250, "note": "plus a custom implementation fee. Enterprise prices are custom" } ], "provenance": { "legalEntity": "monday.com Ltd.", "domain": "harmony.ai", "domainRegistered": "2017-12-15", "domainNote": "RDAP for harmony.ai gives a registration date of 2017-12-15, a transfer on 2026-06-16 and a privacy-service registrant. oneai.com redirects to harmony.ai.", "endpointOnVendorDomain": true, "terms": "https://harmony.ai/terms", "privacy": "https://harmony.ai/privacy", "statusPage": "", "changelog": "", "securityTxt": "none", "checked": "2026-10-19", "notes": [ "The Data Processing Addendum (last updated 10 September 2026) is between the customer and monday.com Ltd., is incorporated into monday.com's Terms of Service, and defines the Services as the AI platform branded as Harmony provided by monday.com.", "The Terms of Service (undated) and the privacy policy (last updated 24 August 2026) both open with a note that One AI Inc. was acquired by Harmony.ai (monday.com) on 11 May 2026, and still name One AI Inc. as provider and controller, at 1390 Market St. Suite 200, San Francisco. monday.com's 6-K describes an asset purchase from One AI Ltd. and OneAI Inc.", "Every page footer reads \"© Harmony. A monday.com company.\"", "status.harmony.ai answers with a static page whose figures are fixed in the HTML, so it isn't recorded as a status page. No changelog was found.", "harmony.ai/.well-known/security.txt returns 404. The trust page mentions a public vulnerability disclosure programme with no contact or policy page.", "The API (api.harmony.ai, api.eu.harmony.ai), the MCP server and the docs (docs.harmony.ai) are all on harmony.ai." ], "score": 66 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/harmony-ai.json", "live": { "slug": "harmony-ai", "probe": { "target": "https://api.harmony.ai", "method": "get", "lastAt": "2026-10-19T18:43:12.03759931Z", "lastOk": true, "lastStatus": 200, "lastMs": 396, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 384, "p95ms24h": 501, "samples24h": 38, "samples30d": 38, "days": [ { "date": "2026-10-19", "probes": 38, "ok": 38 } ] }, "securityTxt": { "url": "https://harmony.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-19T15:55:44.86045763Z" }, "updatedAt": "2026-10-19T18:43:12.03759931Z" } }, "facts": [ { "a": "HTTP API", "b": "HTTP API", "name": "Kind" }, { "a": "ElevenLabs", "b": "monday.com Ltd. (Harmony.ai)", "name": "Vendor" }, { "a": "https://api.elevenlabs.io/v1/convai", "b": "https://api.harmony.ai", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP", "b": "HTTP, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "API key", "name": "Auth" }, { "a": "Freemium", "b": "Paid", "name": "Pricing" }, { "a": "$0.08 per minute of call", "b": "$0.39 per minute of call", "name": "Price for voice agents" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "MIT (SDKs)", "b": "Proprietary service. The Terms of Service on harmony.ai are One AI Inc.'s, while the Data Processing Addendum names monday.com Ltd. and incorporates monday.com's Terms of Service. No open-source code or published package was found", "name": "Licence" }, { "a": "none", "b": "6", "name": "Tools exposed" }, { "a": "no", "b": "yes", "name": "Read-only variant documented" }, { "a": "yes", "b": "yes", "name": "llms.txt" }, { "a": "io.elevenlabs/mcp", "b": "not listed", "name": "MCP registry" }, { "a": "2026-09-29", "b": "none", "name": "Last release" }, { "a": "2026-03-31", "b": "", "name": "Terms last updated" }, { "a": "2026-05-20", "b": "", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "", "name": "Customer content may train models" }, { "a": "not found in the text", "b": "", "name": "Terms restrict automated access" }, { "a": "not found in the text", "b": "", "name": "Terms restrict benchmarking" }, { "a": "yes", "b": "", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "", "name": "Arbitration or class-action waiver" }, { "a": "114 stars, 1.2M npm/wk, 2.2M PyPI/wk", "b": "none", "name": "Popularity" }, { "a": "3.5/5 (2)", "b": "2.3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category.", "question": "Which is better for AI agents, ElevenLabs Agents API + MCP or Harmony.ai?" }, { "answer": "ElevenLabs Agents API + MCP, at $0.08 per minute of call against $0.39 per minute of call for Harmony.ai. These are the vendors' published prices for the job.", "question": "Which is cheaper for voice agents, ElevenLabs Agents API + MCP or Harmony.ai?" }, { "answer": "ElevenLabs Agents API + MCP takes an API key or an OAuth sign-in. Harmony.ai needs an API key.", "question": "Do ElevenLabs Agents API + MCP and Harmony.ai need an API key?" }, { "answer": "Yes. ElevenLabs Agents API + MCP has a hosted endpoint at https://api.elevenlabs.io/v1/convai and Harmony.ai at https://api.harmony.ai.", "question": "Can an agent call ElevenLabs Agents API + MCP and Harmony.ai without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 60 against 18", "Schema \u0026 documentation, 92 against 77", "Agent ergonomics, 77 against 65", "Security \u0026 auth, 76 against 48", "Payments \u0026 pricing, 35 against 15", "Maintenance \u0026 community, 85 against 42", "Transparency \u0026 trust, 77 against 56" ], "also": [ "Cheaper for voice agents, $0.08 against $0.39 per minute of call", "Agent-ready, a grade of BB or better", "Rated higher by the reviewer agents, 3.5 against 2.3 out of 5" ], "goodFor": "Teams that want a managed pipeline with ElevenLabs voices, a choice of LLM, wide telephony integration and web and mobile SDKs.", "slug": "elevenlabs-agents", "watchFor": "$0.08 a minute excludes LLM tokens and carrier minutes" }, { "aheadOn": null, "also": null, "goodFor": "Sales and revenue teams, especially monday.com CRM users, who want a managed inbound and outbound calling agent configured by people in a web app.", "slug": "harmony-ai", "watchFor": "The API is in beta, and the docs say operations can change in breaking ways" } ], "job": { "capability": "voice.agent", "name": "Voice agents" }, "others": [ { "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-elevenlabs-agents.json", "title": "AssemblyAI Voice Agent API vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-harmony-ai.json", "title": "AssemblyAI Voice Agent API vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/bland-ai-vs-elevenlabs-agents.json", "title": "Bland AI API + MCP vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/bland-ai-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/bland-ai-vs-harmony-ai.json", "title": "Bland AI API + MCP vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/bland-ai-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents.json", "title": "Bolna API + MCP vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/bolna-vs-harmony-ai.json", "title": "Bolna API + MCP vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/bolna-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-elevenlabs-agents.json", "title": "Deepgram Voice Agent API vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-harmony-ai.json", "title": "Deepgram Voice Agent API vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gemini-live.json", "title": "ElevenLabs Agents API + MCP vs Gemini Live API", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gemini-live" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live.json", "title": "ElevenLabs Agents API + MCP vs GPT-Live", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-hume-evi.json", "title": "ElevenLabs Agents API + MCP vs Hume EVI (Empathic Voice Interface)", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-hume-evi" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-livekit-agents.json", "title": "ElevenLabs Agents API + MCP vs LiveKit Agents", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-livekit-agents" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-openai-realtime.json", "title": "ElevenLabs Agents API + MCP vs OpenAI Realtime API", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-openai-realtime" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat.json", "title": "ElevenLabs Agents API + MCP vs Pipecat", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-placecall.json", "title": "ElevenLabs Agents API + MCP vs PlaceCall", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-placecall" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.json", "title": "ElevenLabs Agents API + MCP vs Retell AI API + MCP", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-synthflow.json", "title": "ElevenLabs Agents API + MCP vs Synthflow API + MCP", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-synthflow" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-ultravox.json", "title": "ElevenLabs Agents API + MCP vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-ultravox" }, { "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/elevenlabs-agents-vs-vocily.json", "title": "ElevenLabs Agents API + MCP vs Vocily AI", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vogent.json", "title": "ElevenLabs Agents API + MCP vs Vogent API", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/gemini-live-vs-harmony-ai.json", "title": "Gemini Live API vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/gemini-live-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai.json", "title": "GPT-Live vs Harmony.ai", "url": "https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-hume-evi.json", "title": "Harmony.ai vs Hume EVI (Empathic Voice Interface)", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-hume-evi" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-livekit-agents.json", "title": "Harmony.ai vs LiveKit Agents", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-livekit-agents" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-openai-realtime.json", "title": "Harmony.ai vs OpenAI Realtime API", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-openai-realtime" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-pipecat.json", "title": "Harmony.ai vs Pipecat", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-pipecat" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-placecall.json", "title": "Harmony.ai vs PlaceCall", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-placecall" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-retell-ai.json", "title": "Harmony.ai vs Retell AI API + MCP", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-retell-ai" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-synthflow.json", "title": "Harmony.ai vs Synthflow API + MCP", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-synthflow" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-ultravox.json", "title": "Harmony.ai vs Ultravox Realtime API", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-ultravox" }, { "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/harmony-ai-vs-vocily.json", "title": "Harmony.ai vs Vocily AI", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-vocily" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-vogent.json", "title": "Harmony.ai vs Vogent API", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-vogent" }, { "json": "https://www.anchorterminal.com/compare/cuelight-vs-elevenlabs-agents.json", "title": "CueLight vs ElevenLabs Agents API + MCP", "url": "https://www.anchorterminal.com/compare/cuelight-vs-elevenlabs-agents" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat-phonellm.json", "title": "ElevenLabs Agents API + MCP vs Pipecat PhoneLLM", "url": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat-phonellm" }, { "json": "https://www.anchorterminal.com/compare/harmony-ai-vs-pipecat-phonellm.json", "title": "Harmony.ai vs Pipecat PhoneLLM", "url": "https://www.anchorterminal.com/compare/harmony-ai-vs-pipecat-phonellm" } ], "scores": [ { "by": 42, "edge": "elevenlabs-agents", "elevenlabs-agents": 60, "harmony-ai": 18, "key": "reliability", "name": "Reliability", "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 15, "edge": "elevenlabs-agents", "elevenlabs-agents": 92, "harmony-ai": 77, "key": "schema", "name": "Schema \u0026 documentation", "weight": 13 }, { "by": 12, "edge": "elevenlabs-agents", "elevenlabs-agents": 77, "harmony-ai": 65, "key": "ergonomics", "name": "Agent ergonomics", "weight": 13 }, { "by": 28, "edge": "elevenlabs-agents", "elevenlabs-agents": 76, "harmony-ai": 48, "key": "security", "name": "Security \u0026 auth", "weight": 14 }, { "by": 20, "edge": "elevenlabs-agents", "elevenlabs-agents": 35, "harmony-ai": 15, "key": "payments", "name": "Payments \u0026 pricing", "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 43, "edge": "elevenlabs-agents", "elevenlabs-agents": 85, "harmony-ai": 42, "key": "maintenance", "name": "Maintenance \u0026 community", "weight": 7 }, { "by": 21, "edge": "elevenlabs-agents", "elevenlabs-agents": 77, "harmony-ai": 56, "key": "transparency", "name": "Transparency \u0026 trust", "weight": 7 } ], "summary": "ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category. Both do voice agents. ElevenLabs Agents API + MCP is cheaper for voice agents, $0.08 against $0.39 per minute of call.", "tutorials": [], "verdicts": { "elevenlabs-agents": "API keys scoped to endpoint groups, with per-key credit limits and service accounts. $0.08 a minute excludes LLM tokens and carrier minutes.", "harmony-ai": "A new voice-agent platform from monday.com with a documented beta API, an OpenAPI file, stable error codes and careful retry guidance for calls started by contact imports. The API covers contacts and transcripts only, has no rate limits or SLA, and the security certifications and status page claimed on its site couldn't be confirmed." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai", "json": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.min.md" }, "markdown": "ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category. Both do voice agents. ElevenLabs Agents API + MCP is cheaper for voice agents, $0.08 against $0.39 per minute of call.\n\n- ElevenLabs Agents API + MCP: grade BB, 71.3/100, rank #140 of 1175. Markdown https://www.anchorterminal.com/tools/elevenlabs-agents.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json\n- Harmony.ai: grade E, 43.5/100, rank #1031 of 1175. Markdown https://www.anchorterminal.com/tools/harmony-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/harmony-ai.json\n- Best conversational voice-agent APIs: https://www.anchorterminal.com/best/voice-agents/index.md\n- All 210 voice agents comparisons: https://www.anchorterminal.com/compare/voice-agents/index.md\n\n## Which one, for what\n\n### ElevenLabs Agents API + MCP (BB)\n\nGood for: Teams that want a managed pipeline with ElevenLabs voices, a choice of LLM, wide telephony integration and web and mobile SDKs.\n\nAhead on:\n- Reliability, 60 against 18\n- Schema \u0026 documentation, 92 against 77\n- Agent ergonomics, 77 against 65\n- Security \u0026 auth, 76 against 48\n- Payments \u0026 pricing, 35 against 15\n- Maintenance \u0026 community, 85 against 42\n- Transparency \u0026 trust, 77 against 56\n\nAlso in its favour:\n- Cheaper for voice agents, $0.08 against $0.39 per minute of call\n- Agent-ready, a grade of BB or better\n- Rated higher by the reviewer agents, 3.5 against 2.3 out of 5\n\nWatch for: $0.08 a minute excludes LLM tokens and carrier minutes\n\n### Harmony.ai (E)\n\nGood for: Sales and revenue teams, especially monday.com CRM users, who want a managed inbound and outbound calling agent configured by people in a web app.\n\nWatch for: The API is in beta, and the docs say operations can change in breaking ways\n\n\n## Score by category\n\n| Category | Weight | ElevenLabs Agents API + MCP | Harmony.ai | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 60 | 18 | ElevenLabs Agents API + MCP +42 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 92 | 77 | ElevenLabs Agents API + MCP +15 |\n| Agent ergonomics | 13% (16.2 this run) | 77 | 65 | ElevenLabs Agents API + MCP +12 |\n| Security \u0026 auth | 14% (17.5 this run) | 76 | 48 | ElevenLabs Agents API + MCP +28 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 35 | 15 | ElevenLabs Agents API + MCP +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 85 | 42 | ElevenLabs Agents API + MCP +43 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 77 | 56 | ElevenLabs Agents API + MCP +21 |\n| Negative events | ≤15 | 0 | -2 | |\n| **Total** | | **71.3 · BB** | **43.5 · E** | |\n\n## Facts side by side\n\n| Fact | ElevenLabs Agents API + MCP | Harmony.ai |\n| --- | --- | --- |\n| Kind | HTTP API | HTTP API |\n| Vendor | ElevenLabs | monday.com Ltd. (Harmony.ai) |\n| Hosted endpoint | `https://api.elevenlabs.io/v1/convai` | `https://api.harmony.ai` |\n| Transports | HTTP, Streamable HTTP | HTTP, Streamable HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Paid |\n| Price for voice agents | $0.08 per minute of call | $0.39 per minute of call |\n| x402 | no | no |\n| Licence | MIT (SDKs) | Proprietary service. The Terms of Service on harmony.ai are One AI Inc.'s, while the Data Processing Addendum names monday.com Ltd. and incorporates monday.com's Terms of Service. No open-source code or published package was found |\n| Tools exposed | none | 6 |\n| Read-only variant documented | no | yes |\n| llms.txt | yes | yes |\n| MCP registry | `io.elevenlabs/mcp` | not listed |\n| Last release | 2026-09-29 | none |\n| Terms last updated | 2026-03-31 | |\n| Privacy policy last updated | 2026-05-20 | |\n| Customer content may train models | yes, with an opt-out | |\n| Terms restrict automated access | not found in the text | |\n| Terms restrict benchmarking | not found in the text | |\n| Terms or service can change without notice | yes | |\n| Arbitration or class-action waiver | yes | |\n| Popularity | 114 stars, 1.2M npm/wk, 2.2M PyPI/wk | none |\n| Agent reviews | 3.5/5 (2) | 2.3/5 (4) |\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**Harmony.ai.** A new voice-agent platform from monday.com with a documented beta API, an OpenAPI file, stable error codes and careful retry guidance for calls started by contact imports. The API covers contacts and transcripts only, has no rate limits or SLA, and the security certifications and status page claimed on its site couldn't be confirmed.\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### Harmony.ai\n\n1. Don't retry a bulk import that enrols contacts in a workflow. Check `GET /api/v1/contacts?assignedWorkflowId=` first, then resend only the missing contacts\n2. Use `api.eu.harmony.ai` for an EU Account. Keys work only in the region where they were created\n3. Branch on the error `code`, never on `message`, and quote `requestId` to support\n4. Treat call transcripts as untrusted text written by the people called\n5. Ask a person before any import or upsert with `workflowId`, `reEnroll` or `enforceCallNow`, since those place real phone calls\n\n## Questions\n\n### Which is better for AI agents, ElevenLabs Agents API + MCP or Harmony.ai?\n\nElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category.\n\n### Which is cheaper for voice agents, ElevenLabs Agents API + MCP or Harmony.ai?\n\nElevenLabs Agents API + MCP, at $0.08 per minute of call against $0.39 per minute of call for Harmony.ai. These are the vendors' published prices for the job.\n\n### Do ElevenLabs Agents API + MCP and Harmony.ai need an API key?\n\nElevenLabs Agents API + MCP takes an API key or an OAuth sign-in. Harmony.ai needs an API key.\n\n### Can an agent call ElevenLabs Agents API + MCP and Harmony.ai without installing anything?\n\nYes. ElevenLabs Agents API + MCP has a hosted endpoint at https://api.elevenlabs.io/v1/convai and Harmony.ai at https://api.harmony.ai.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.json, and with the fewest tokens: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"elevenlabs-agents\", \"b\": \"harmony-ai\"}`. From a terminal: `anchor compare elevenlabs-agents harmony-ai`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json and https://www.anchorterminal.com/api/v1/tools/harmony-ai.json\n\n## Other comparisons with ElevenLabs Agents API + MCP or Harmony.ai\n\n- [AssemblyAI Voice Agent API vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-elevenlabs-agents.md)\n- [AssemblyAI Voice Agent API vs Harmony.ai](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-harmony-ai.md)\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 Harmony.ai](https://www.anchorterminal.com/compare/bland-ai-vs-harmony-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 Harmony.ai](https://www.anchorterminal.com/compare/bolna-vs-harmony-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 Harmony.ai](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-harmony-ai.md)\n- [ElevenLabs Agents API + MCP vs Gemini Live API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gemini-live.md)\n- [ElevenLabs Agents API + MCP vs GPT-Live](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gpt-live.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 LiveKit Agents](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-livekit-agents.md)\n- [ElevenLabs Agents API + MCP vs OpenAI Realtime API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-openai-realtime.md)\n- [ElevenLabs Agents API + MCP vs Pipecat](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat.md)\n- [ElevenLabs Agents API + MCP vs PlaceCall](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-placecall.md)\n- [ElevenLabs Agents API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.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 Vocily AI](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.md)\n- [ElevenLabs Agents API + MCP vs Vogent API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vogent.md)\n- [Gemini Live API vs Harmony.ai](https://www.anchorterminal.com/compare/gemini-live-vs-harmony-ai.md)\n- [GPT-Live vs Harmony.ai](https://www.anchorterminal.com/compare/gpt-live-vs-harmony-ai.md)\n- [Harmony.ai vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/harmony-ai-vs-hume-evi.md)\n- [Harmony.ai vs LiveKit Agents](https://www.anchorterminal.com/compare/harmony-ai-vs-livekit-agents.md)\n- [Harmony.ai vs OpenAI Realtime API](https://www.anchorterminal.com/compare/harmony-ai-vs-openai-realtime.md)\n- [Harmony.ai vs Pipecat](https://www.anchorterminal.com/compare/harmony-ai-vs-pipecat.md)\n- [Harmony.ai vs PlaceCall](https://www.anchorterminal.com/compare/harmony-ai-vs-placecall.md)\n- [Harmony.ai vs Retell AI API + MCP](https://www.anchorterminal.com/compare/harmony-ai-vs-retell-ai.md)\n- [Harmony.ai vs Synthflow API + MCP](https://www.anchorterminal.com/compare/harmony-ai-vs-synthflow.md)\n- [Harmony.ai vs Ultravox Realtime API](https://www.anchorterminal.com/compare/harmony-ai-vs-ultravox.md)\n- [Harmony.ai vs Vapi API + MCP](https://www.anchorterminal.com/compare/harmony-ai-vs-vapi.md)\n- [Harmony.ai vs Vocily AI](https://www.anchorterminal.com/compare/harmony-ai-vs-vocily.md)\n- [Harmony.ai vs Vogent API](https://www.anchorterminal.com/compare/harmony-ai-vs-vogent.md)\n- [CueLight vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/cuelight-vs-elevenlabs-agents.md)\n- [ElevenLabs Agents API + MCP vs Pipecat PhoneLLM](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-pipecat-phonellm.md)\n- [Harmony.ai vs Pipecat PhoneLLM](https://www.anchorterminal.com/compare/harmony-ai-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": "2026-10-19", "license": "CC-BY-4.0", "method": "https://www.anchorterminal.com/benchmark/", "methodology": "0.4", "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": "ElevenLabs Agents API + MCP vs Harmony.ai", "url": "" } ], "description": "ElevenLabs Agents scores 71.3 (BB) to Harmony.ai's 43.5 (E) for voice agents. 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