{ "data": { "a": { "slug": "cartesia-voice-cloning", "name": "Cartesia Voice Cloning API + MCP", "vendor": "Cartesia", "vendorUrl": "https://cartesia.ai", "kind": "model", "category": "voice-cloning", "summary": "Instant voice clones for Sonic from 10 to 60 seconds of audio, and Pro Voice Clones fine-tuned on 30 minutes or more, trained in up to 3 hours.", "url": "https://www.anchorterminal.com/tools/cartesia-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/cartesia-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/cartesia-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/cartesia-voice-cloning.json", "repo": "https://github.com/cartesia-ai/cartesia-python", "license": "Apache-2.0 (SDKs)", "transports": [ "http", "streamable-http", "stdio" ], "remoteUrl": "https://api.cartesia.ai", "packages": [ { "registry": "npm", "name": "@cartesia/cartesia-js" }, { "registry": "pypi", "name": "cartesia" }, { "registry": "pypi", "name": "cartesia-mcp" } ], "auth": "mixed", "authNotes": "`Authorization: Bearer` API key plus the `Cartesia-Version` header. The hosted MCP at `https://mcp.cartesia.ai/mcp` signs in through the Playground, the local `cartesia-mcp` reads `CARTESIA_API_KEY`. Both expose `clone_voice` and `localize_voice`.", "pricing": "freemium", "pricingNotes": "Instant voice cloning is included from Pro at $5 a month. Pro Voice Cloning needs Startup at $49 a month (2 PVC slots) or Scale at $299 (4 slots), Enterprise is custom. Training a PVC is free, and speech from any clone costs 1 credit a character. Localising a voice costs 225 credits per added accent. Free has no cloning (https://cartesia.ai/pricing).", "priceSummary": "$5 / mo", "where": "both", "x402": { "level": "no", "evidence": "No x402 or machine payment in the docs or pricing (checked 2026-09-30).", "endpoints": [] }, "toolCount": 19, "popularity": { "githubStars": 133, "npmWeekly": 166023, "pypiWeekly": 176771, "asOf": "2026-09-30" }, "docsUrl": "https://docs.cartesia.ai/build-with-cartesia/capability-guides/clone-voices", "llmsTxt": "https://docs.cartesia.ai/llms.txt", "capabilities": [ "voice.clone", "speech.tts" ], "tags": [ "hosted", "freemium", "closed-source", "python", "typescript", "llms-txt", "mcp", "async-jobs", "enterprise" ], "lastRelease": "2026-09-30", "graded": true, "anchor": { "graded": true, "score": 59.8, "grade": "C", "agentReady": false, "rank": 257, "ranked": true, "rankOf": 452, "categoryRank": 3, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 80, "payments": 10, "reliability": 63, "schema": 85, "security": 48, "transparency": 71 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "Instant clones from 10 seconds of audio, up to 60 seconds used on Sonic 3.6. No consent or speaker verification in the clone API.", "strengths": [ "Instant clones from 10 seconds of audio, up to 60 seconds used on Sonic 3.6", "Pro clone training is free on Startup ($49) and Scale ($299)", "Clones carried over to Sonic 3.6 with the same voice IDs", "Dated API versions through the `Cartesia-Version` header and OpenAPI files per version", "`clone_voice` and `localize_voice` in the official MCP server, released 2026-09-30" ], "weaknesses": [ "No consent or speaker verification in the clone API", "Terms allow training on uploads by default, with opt-out only by form", "Zero Data Retention doesn't cover voice cloning", "No cloning on the Free plan and no per-unit dollar price", "No security.txt" ], "agentNotes": [ "Send `Cartesia-Version` on every call. The clone endpoint lists it as a required header", "Pass the speaker's recorded `language`. A clone is built from one language, add others with the accents API", "Keep IVC uploads under 16 MB", "Don't blind-retry `POST /voices/clone`. The SDK retries 429 and 5xx twice and there's no idempotency key, so check the voice list first", "Poll a Pro clone fine-tune until it finishes before using the voice ID" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "C", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 59.8 } ], "editorialScores": { "ergonomics": 65, "maintenance": 80, "payments": 10, "reliability": 63, "schema": 85, "security": 48, "transparency": 60 }, "provenanceScore": 82 }, "connect": { "http": "curl -X POST https://api.cartesia.ai/voices/clone -H \"Authorization: Bearer $CARTESIA_API_KEY\" \\\n -H \"Cartesia-Version: 2026-08-14\" -F clip=@sample.wav -F name=\"Support voice\" -F language=en", "claudeCode": "claude mcp add --transport http --scope user cartesia https://mcp.cartesia.ai/mcp", "config": { "mcpServers": { "cartesia": { "args": [ "cartesia-mcp" ], "command": "uvx", "env": { "CARTESIA_API_KEY": "${CARTESIA_API_KEY}" } } } } }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/cartesia-voice-cloning" }, "sameCompany": [ "cartesia-tts" ], "area": "voice", "unitPrices": [ { "item": "Pro plan", "unit": "month", "usd": 5, "note": "instant voice cloning" }, { "item": "Startup plan", "unit": "month", "usd": 49, "note": "2 PVC slots, training free" }, { "item": "Scale plan", "unit": "month", "usd": 299, "note": "4 PVC slots" } ], "provenance": { "legalEntity": "Cartesia AI, Inc.", "domain": "cartesia.ai", "domainRegistered": "2023-05-10", "endpointOnVendorDomain": true, "terms": "https://www.cartesia.ai/legal/terms", "privacy": "https://www.cartesia.ai/legal/privacy", "statusPage": "https://status.cartesia.ai", "changelog": "https://docs.cartesia.ai/changelog/2026", "securityTxt": "none", "checked": "2026-09-30", "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cartesia-voice-cloning.json", "live": { "slug": "cartesia-voice-cloning", "probe": { "target": "https://api.cartesia.ai", "method": "get", "lastAt": "2026-10-04T23:48:06.303808341Z", "lastOk": true, "lastStatus": 200, "lastMs": 39, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 39, "p95ms24h": 115, "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.cartesia.ai", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-04T23:49:07.020768147Z" }, "versions": [ { "registry": "github", "name": "cartesia-ai/cartesia-python", "version": "v4.2.0", "released": "2026-09-02", "seenAt": "2026-10-04T16:23:16.436496966Z" }, { "registry": "npm", "name": "@cartesia/cartesia-js", "version": "4.2.0", "seenAt": "2026-10-04T16:23:14.144039735Z" }, { "registry": "pypi", "name": "cartesia", "version": "4.2.0", "released": "2026-09-02", "seenAt": "2026-10-04T16:23:14.431520294Z" }, { "registry": "pypi", "name": "cartesia-mcp", "version": "0.26.0", "released": "2026-09-30", "seenAt": "2026-10-04T16:23:14.543947064Z" } ], "githubStars": 133, "npmWeekly": 108942, "pypiWeekly": 188249, "securityTxt": { "url": "https://cartesia.ai/.well-known/security.txt", "state": "valid", "expires": "2027-10-03T00:00:00.000Z", "checkedAt": "2026-10-04T15:15:57.920556028Z" }, "llmsTxt": { "url": "https://docs.cartesia.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:17:25.383615846Z" }, "domain": { "domain": "cartesia.ai", "registered": "2023-05-10", "source": "https://rdap.identitydigital.services/rdap/domain/cartesia.ai", "checkedAt": "2026-10-04T13:04:05.26596839Z" }, "updatedAt": "2026-10-04T23:49:07.020768147Z" } }, "b": { "slug": "ultravox-voice-cloning", "name": "Ultravox Voice Cloning", "vendor": "Ultravox (Fixie.ai)", "vendorUrl": "https://www.ultravox.ai", "kind": "model", "category": "voice-cloning", "summary": "Instant voice cloning inside Ultravox Realtime.", "url": "https://www.anchorterminal.com/tools/ultravox-voice-cloning", "markdownUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/ultravox-voice-cloning.json", "transports": [ "http" ], "remoteUrl": "https://api.ultravox.ai/api", "packages": [], "auth": "api-key", "authNotes": "`X-API-Key` header, the same key as the rest of the Ultravox API.", "pricing": "freemium", "pricingNotes": "No separate cloning fee. Pay as you go includes 1 cloned voice and Pro ($100 a month, annual rate) includes 5, with speech from the clone billed inside calls at the standard $0.05 a minute. More clones are by request (https://www.ultravox.ai/pricing).", "priceSummary": "$100 / 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": null, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-09-30" }, "docsUrl": "https://docs.ultravox.ai/voices/cloning", "llmsTxt": "https://docs.ultravox.ai/llms.txt", "openapi": "https://api.ultravox.ai/api/schema/", "capabilities": [ "voice.clone", "speech.tts" ], "tags": [ "hosted", "closed-source", "no-card", "llms-txt", "openapi" ], "lastRelease": "2025-12-03", "graded": true, "anchor": { "graded": true, "score": 41, "grade": "E", "agentReady": false, "rank": 420, "ranked": true, "rankOf": 452, "categoryRank": 9, "methodology": "0.3", "run": "2026-10-01", "scores": { "ergonomics": 35, "maintenance": 5, "payments": 40, "reliability": 40, "schema": 68, "security": 35, "transparency": 54 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-01" }, "negative": 0, "verdict": "One multipart request with a 30 to 60 second sample. No consent or speaker verification, only a warranty in the terms.", "strengths": [ "One multipart request with a 30 to 60 second sample", "No fee on top of the $0.05 a minute call rate", "One clone on the free Pay as You Go plan with 30 free minutes", "Voices are private to the creating account", "Call History records each call that uses the voice" ], "weaknesses": [ "No consent or speaker verification, only a warranty in the terms", "Clones work only inside Ultravox calls", "No documented errors, retry guidance or REST SDK", "Changelog's newest entry is 2025-12-03", "Docs say one clone per account, the pricing page says five on Pro" ], "agentNotes": [ "Send a single clean, single-speaker MP3 or WAV of 30 to 60 seconds, 10 MB at most", "Expect one clone per account unless support raises it, whatever the plan page says", "Test the voice in the Playground before putting it on a live agent", "Get the speaker's written consent first, the terms require it and Ultravox doesn't check" ], "metrics": { "kind": "remote", "measured": false }, "reviewCount": 2, "avgRating": 2.5, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "E", "methodology": "0.3", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 41 } ], "editorialScores": { "ergonomics": 35, "maintenance": 5, "payments": 40, "reliability": 40, "schema": 68, "security": 35, "transparency": 25 }, "provenanceScore": 82 }, "connect": { "http": "curl -X POST https://api.ultravox.ai/api/voices -H \"X-API-Key: $ULTRAVOX_API_KEY\" \\\n -F 'file=@sample.wav' -F 'name=Support voice' -F 'language=en-US'" }, "letme": { "capability": "https://letme.dev/voice.clone", "tool": "https://letme.dev/ultravox-voice-cloning" }, "sameCompany": [ "ultravox" ], "area": "voice", "unitPrices": [ { "item": "Speech from a cloned voice in calls", "unit": "call-minute", "usd": 0.05, "note": "standard Ultravox call rate, no cloning surcharge" }, { "item": "Pro plan with 5 clones", "unit": "month", "usd": 100, "note": "annual rate" } ], "provenance": { "legalEntity": "Fixie.ai Inc.", "domain": "ultravox.ai", "domainRegistered": "2023-10-05", "endpointOnVendorDomain": true, "terms": "https://www.ultravox.ai/terms", "privacy": "https://www.ultravox.ai/privacy", "statusPage": "https://status.ultravox.ai", "changelog": "https://docs.ultravox.ai/changelog/news", "securityTxt": "none", "checked": "2026-09-30", "score": 82 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/ultravox-voice-cloning.json", "live": { "slug": "ultravox-voice-cloning", "probe": { "target": "https://api.ultravox.ai/api", "method": "get", "lastAt": "2026-10-04T23:48:17.4072269Z", "lastOk": true, "lastStatus": 404, "lastMs": 137, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 137, "p95ms24h": 215, "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.ultravox.ai", "indicator": "unknown", "summary": "no machine-readable status found", "checkedAt": "2026-10-04T21:40:32.200031803Z" }, "securityTxt": { "url": "https://ultravox.ai/.well-known/security.txt", "state": "none", "checkedAt": "2026-10-04T15:15:37.319054674Z" }, "llmsTxt": { "url": "https://docs.ultravox.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-04T15:18:18.748014248Z" }, "domain": { "domain": "ultravox.ai", "registered": "2023-10-05", "source": "https://rdap.identitydigital.services/rdap/domain/ultravox.ai", "checkedAt": "2026-10-04T13:04:52.103171331Z" }, "pages": [ { "url": "https://docs.ultravox.ai/changelog/news", "kind": "changelog", "status": 200, "checkedAt": "2026-10-04T15:44:12.532381944Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "511ea5f1155f" }, { "url": "https://www.ultravox.ai/pricing", "kind": "pricing", "status": 304, "checkedAt": "2026-10-04T15:52:33.032419595Z", "changedAt": "0001-01-01T00:00:00Z", "fingerprint": "88a4dd170a6b" }, { "url": "https://www.ultravox.ai/privacy", "kind": "privacy", "status": 304, "checkedAt": "2026-10-04T15:52:35.200556395Z", "changedAt": "2026-10-02T15:28:38.982647689Z", "fingerprint": "f1f201438d2e" }, { "url": "https://www.ultravox.ai/terms", "kind": "terms", "status": 304, "checkedAt": "2026-10-04T15:52:37.474878684Z", "changedAt": "2026-10-02T15:28:40.979842821Z", "fingerprint": "663d0615a1d5" } ], "updatedAt": "2026-10-04T23:48:17.4072269Z" } }, "summary": "Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Ultravox Voice Cloning's 41 (E). Both do voice clone. The largest gap is maintenance \u0026 community, 75 points." }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning", "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.md", "slim": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.min.md" }, "markdown": "Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Ultravox Voice Cloning's 41 (E). Both do voice clone. The largest gap is maintenance \u0026 community, 75 points.\n\n- Cartesia Voice Cloning API + MCP: grade C, 59.8/100, rank #257 of 452. Markdown https://www.anchorterminal.com/tools/cartesia-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/cartesia-voice-cloning.json\n- Ultravox Voice Cloning: grade E, 41/100, rank #420 of 452. Markdown https://www.anchorterminal.com/tools/ultravox-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/ultravox-voice-cloning.json\n\n## Which one, for what\n\nPick Cartesia Voice Cloning API + MCP for reliability (+23), schema \u0026 documentation (+17), agent ergonomics (+30), security \u0026 auth (+13), maintenance \u0026 community (+75), transparency \u0026 trust (+17).\n\nPick Ultravox Voice Cloning for payments \u0026 pricing (+30).\n\n## Score by category\n\n| Category | Weight | Cartesia Voice Cloning API + MCP | Ultravox Voice Cloning | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 63 | 40 | Cartesia Voice Cloning API + MCP +23 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 68 | Cartesia Voice Cloning API + MCP +17 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 35 | Cartesia Voice Cloning API + MCP +30 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 35 | Cartesia Voice Cloning API + MCP +13 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 40 | Ultravox Voice Cloning +30 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 80 | 5 | Cartesia Voice Cloning API + MCP +75 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 71 | 54 | Cartesia Voice Cloning API + MCP +17 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **59.8 · C** | **41 · E** | |\n\n## Facts side by side\n\n| Fact | Cartesia Voice Cloning API + MCP | Ultravox Voice Cloning |\n| --- | --- | --- |\n| Kind | Model API | Model API |\n| Vendor | Cartesia | Ultravox (Fixie.ai) |\n| Hosted endpoint | `https://api.cartesia.ai` | `https://api.ultravox.ai/api` |\n| Transports | HTTP, Streamable HTTP, stdio | HTTP |\n| Auth | OAuth or key | API key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (SDKs) | none |\n| Tools exposed | 19 | 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 | not listed | not listed |\n| Last release | 2026-09-30 | 2025-12-03 |\n| Popularity | 133 stars, 166k npm/wk, 177k PyPI/wk | none |\n| Agent reviews | 2.5/5 (2) | 2.5/5 (2) |\n\n## Verdicts\n\n**Cartesia Voice Cloning API + MCP.** Instant clones from 10 seconds of audio, up to 60 seconds used on Sonic 3.6. No consent or speaker verification in the clone API.\n\n**Ultravox Voice Cloning.** One multipart request with a 30 to 60 second sample. No consent or speaker verification, only a warranty in the terms.\n\n## Before you call either\n\n### Cartesia Voice Cloning API + MCP\n\n1. Send `Cartesia-Version` on every call. The clone endpoint lists it as a required header\n2. Pass the speaker's recorded `language`. A clone is built from one language, add others with the accents API\n3. Keep IVC uploads under 16 MB\n4. Don't blind-retry `POST /voices/clone`. The SDK retries 429 and 5xx twice and there's no idempotency key, so check the voice list first\n5. Poll a Pro clone fine-tune until it finishes before using the voice ID\n\n### Ultravox Voice Cloning\n\n1. Send a single clean, single-speaker MP3 or WAV of 30 to 60 seconds, 10 MB at most\n2. Expect one clone per account unless support raises it, whatever the plan page says\n3. Test the voice in the Playground before putting it on a live agent\n4. Get the speaker's written consent first, the terms require it and Ultravox doesn't check\n\n## Other comparisons with Cartesia Voice Cloning API + MCP or Ultravox Voice Cloning\n\n- [Cartesia Voice Cloning API + MCP vs ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Fish Audio Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-murf-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-playht-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-soniox-voice-cloning.md)\n- [Cartesia Voice Cloning API + MCP vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Fish Audio Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Hume Octave Voice Design and Cloning + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Murf Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-ultravox-voice-cloning.md)\n- [PlayHT Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Resemble AI Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Soniox Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-ultravox-voice-cloning.md)\n- [Speechify API Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-ultravox-voice-cloning.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": "Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning", "url": "" } ], "description": "Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Ultravox Voice Cloning's 41 (E). Both do voice clone. The largest gap is maintenance \u0026 community, 75 points. Category scores, facts, verdicts and agent notes side by side.", "facts": [ "Cartesia Voice Cloning API + MCP C 59.8", "Ultravox Voice Cloning E 41", "scores" ], "h1": "Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning", "image": "https://www.anchorterminal.com/assets/og/compare-cartesia-voice-cloning-vs-ultravox-voice-cloning.png", "path": "/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning", "published": "2026-10-01", "section": "tools", "title": "Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning", "toc": null, "updated": "2026-10-04", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning" }, "tokens": { "markdown": 1850, "slim": 380 }, "version": 1 }