{ "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": 59.5, "grade": "C", "agentReady": false, "rank": 606, "ranked": true, "rankOf": 1171, "categoryRank": 3, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 65, "maintenance": 80, "payments": 10, "reliability": 63, "schema": 85, "security": 48, "transparency": 67 }, "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.", "bestFor": "Teams that want cheap instant clones and fast streaming TTS in the same account, especially voice agents.", "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": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 59.5 } ], "editorialScores": { "ergonomics": 65, "maintenance": 80, "payments": 10, "reliability": 63, "schema": 85, "security": 48, "transparency": 60 }, "provenanceScore": 74 }, "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-ink-stt", "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": 74 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/cartesia-voice-cloning.json", "live": { "slug": "cartesia-voice-cloning", "probe": { "target": "https://api.cartesia.ai", "method": "get", "lastAt": "2026-10-19T09:34:24.349450817Z", "lastOk": true, "lastStatus": 200, "lastMs": 46, "authRequired": false, "uptime24h": 100, "uptime30d": 100, "p50ms24h": 49, "p95ms24h": 110, "samples24h": 256, "samples30d": 4790, "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": 249 }, { "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": 102, "ok": 102 } ] }, "vendorStatus": { "page": "https://status.cartesia.ai", "indicator": "none", "summary": "All Systems Operational", "checkedAt": "2026-10-19T09:26:58.925772729Z" }, "versions": [ { "registry": "github", "name": "cartesia-ai/cartesia-python", "version": "v4.2.0", "released": "2026-09-02", "seenAt": "2026-10-19T03:39:41.335648473Z" }, { "registry": "npm", "name": "@cartesia/cartesia-js", "version": "4.2.0", "seenAt": "2026-10-19T03:39:39.109976644Z" }, { "registry": "pypi", "name": "cartesia", "version": "4.2.0", "released": "2026-09-02", "seenAt": "2026-10-19T03:39:39.33061118Z" }, { "registry": "pypi", "name": "cartesia-mcp", "version": "0.26.1", "released": "2026-10-08", "seenAt": "2026-10-19T03:39:39.442783221Z" } ], "githubStars": 134, "npmWeekly": 54261, "pypiWeekly": 197667, "securityTxt": { "url": "https://cartesia.ai/.well-known/security.txt", "state": "valid", "expires": "2027-10-03T00:00:00.000Z", "checkedAt": "2026-10-18T15:54:20.172045379Z" }, "llmsTxt": { "url": "https://docs.cartesia.ai/llms.txt", "ok": true, "status": 200, "checkedAt": "2026-10-18T14:24:30.344644123Z" }, "domain": { "domain": "cartesia.ai", "registered": "2023-05-10", "source": "https://rdap.identitydigital.services/rdap/domain/cartesia.ai", "checkedAt": "2026-10-18T13:41:51.68882121Z" }, "github": { "repo": "cartesia-ai/cartesia-python", "checkedAt": "2026-10-19T05:59:36.885607962Z", "stars": 134, "archived": false, "issuesEnabled": true, "pushedAt": "2026-10-16T18:24:02Z", "openIssues": 1, "openPRs": 5, "issuesOpened90d": 1, "issuesClosed90d": 1, "prsMerged90d": 10, "ci": { "branch": "main", "runs": 50, "success": 32, "failure": 1, "other": 17, "latest": "skipped", "latestAt": "2026-09-02T21:34:37Z" }, "replies": { "sampled": 14, "unanswered": 1, "medianDays": 54.7 } }, "updatedAt": "2026-10-19T09:34:24.349450817Z" } }, "answer": "Cartesia Voice Cloning API + MCP scores 59.5 (C) on agent readiness against VoiceStudio's 46.2 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on payments \u0026 pricing.", "b": { "slug": "voicestudio", "name": "VoiceStudio", "vendor": "VoiceStudio maintainers", "vendorUrl": "https://voicestudio.sh", "kind": "mcp", "category": "voice-cloning", "summary": "VoiceStudio runs speech generation, voice cloning, transcription and dubbing on local hardware. Its desktop application exposes HTTP and MCP interfaces for agent-controlled audio workflows.", "url": "https://www.anchorterminal.com/tools/voicestudio", "markdownUrl": "https://www.anchorterminal.com/tools/voicestudio.md", "slimMarkdownUrl": "https://www.anchorterminal.com/tools/voicestudio.min.md", "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/voicestudio.json", "repo": "https://github.com/debpalash/VoiceStudio", "license": "AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences.", "transports": [ "stdio", "streamable-http" ], "packages": [], "auth": "mixed", "authNotes": "Local MCP over HTTP or a stdio shim. LAN sharing uses a PIN. A local reverse proxy must enforce its own authentication because loopback requests can bypass the sharing PIN.", "pricing": "freemium", "pricingNotes": "The AGPL desktop app is free to run on your own hardware. Pro and Lifetime commercial builds are separate purchases. Cloud is an early-access enquiry, not a generally available hosted API.", "priceSummary": "Freemium", "where": "local", "x402": { "level": "no", "evidence": "No machine payment protocol established in the reviewed project documentation.", "endpoints": [] }, "toolCount": null, "popularity": { "githubStars": 76032, "npmWeekly": null, "pypiWeekly": null, "asOf": "2026-10-19" }, "docsUrl": "https://github.com/debpalash/VoiceStudio#readme", "capabilities": [ "audio.generate", "voice.clone", "audio.transcribe" ], "tags": [ "voice-cloning", "mcp", "freemium" ], "lastRelease": "2026-09-23", "graded": true, "anchor": { "graded": true, "score": 46.2, "grade": "D", "agentReady": false, "rank": 984, "ranked": true, "rankOf": 1171, "categoryRank": 9, "methodology": "0.4", "run": "2026-10-01", "scores": { "ergonomics": 60, "maintenance": 50, "payments": 30, "reliability": 30, "schema": 60, "security": 50, "transparency": 44 }, "pending": [ "performance", "tasks" ], "assessment": { "confidence": "medium", "date": "2026-10-19" }, "negative": 0, "verdict": "Local audio generation with HTTP and MCP access. Hardware and model licences vary by backend.", "bestFor": "VoiceStudio runs speech generation, voice cloning, transcription and dubbing on local hardware.", "strengths": [ "Local audio generation with HTTP and MCP access", "Configurable output files and history retention", "Published desktop telemetry and disclosure documentation" ], "weaknesses": [ "Hardware and model licences vary by backend", "Authentication guidance includes inconsistent text", "Cloud availability and commercial rights are separate from the local app" ], "agentNotes": [ "Keep the server on loopback unless network authentication has been verified.", "Use file outputs for large audio and restrict the output directory.", "Check the selected model licence before commercial voice use." ], "metrics": { "kind": "local", "measured": false }, "reviewCount": 4, "avgRating": 3, "history": [ { "basis": "public evidence", "confidence": "medium", "grade": "D", "methodology": "0.4", "pending": [ "performance", "tasks" ], "run": "2026-10-01", "runLabel": "October 2026 research run", "score": 46.2 } ], "editorialScores": { "ergonomics": 60, "maintenance": 50, "payments": 30, "reliability": 30, "schema": 60, "security": 50, "transparency": 65 }, "provenanceScore": 23 }, "letme": { "capability": "https://letme.dev/audio.generate", "tool": "https://letme.dev/voicestudio" }, "area": "voice", "provenance": { "legalEntity": "", "domain": "voicestudio.sh", "domainRegistered": "", "endpointOnVendorDomain": false, "terms": "https://raw.githubusercontent.com/debpalash/VoiceStudio/main/LICENSE", "privacy": "https://voicestudio.sh/privacy", "statusPage": "", "changelog": "https://github.com/debpalash/VoiceStudio/releases", "securityTxt": "unknown", "checked": "2026-10-19", "notes": [ "Assessment covers the named repository. No ownership claim or domain registration was verified." ], "score": 23 }, "pageJsonUrl": "https://www.anchorterminal.com/tools/voicestudio.json" }, "facts": [ { "a": "Model API", "b": "MCP server", "name": "Kind" }, { "a": "Cartesia", "b": "VoiceStudio maintainers", "name": "Vendor" }, { "a": "https://api.cartesia.ai", "b": "no (local only)", "name": "Hosted endpoint" }, { "a": "HTTP, Streamable HTTP, stdio", "b": "stdio, Streamable HTTP", "name": "Transports" }, { "a": "OAuth or key", "b": "OAuth or key", "name": "Auth" }, { "a": "Freemium", "b": "Freemium", "name": "Pricing" }, { "a": "no", "b": "no", "name": "x402" }, { "a": "Apache-2.0 (SDKs)", "b": "AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences.", "name": "Licence" }, { "a": "19", "b": "none", "name": "Tools exposed" }, { "a": "no", "b": "no", "name": "Read-only variant documented" }, { "a": "yes", "b": "no", "name": "llms.txt" }, { "a": "2026-09-30", "b": "2026-09-23", "name": "Last release" }, { "a": "2024-06-14", "b": "no date given", "name": "Terms last updated" }, { "a": "2024-06-14", "b": "2026-10-08", "name": "Privacy policy last updated" }, { "a": "yes, with an opt-out", "b": "not found in the text", "name": "Customer content may train models" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict automated access" }, { "a": "yes", "b": "not found in the text", "name": "Terms restrict benchmarking" }, { "a": "not found in the text", "b": "not found in the text", "name": "Terms or service can change without notice" }, { "a": "yes", "b": "not found in the text", "name": "Arbitration or class-action waiver" }, { "a": "133 stars, 166k npm/wk, 177k PyPI/wk", "b": "76k stars", "name": "Popularity" }, { "a": "2.5/5 (2)", "b": "3/5 (4)", "name": "Agent reviews" } ], "faq": [ { "answer": "Cartesia Voice Cloning API + MCP scores 59.5 (C) on agent readiness against VoiceStudio's 46.2 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on payments \u0026 pricing.", "question": "Which is better for AI agents, Cartesia Voice Cloning API + MCP or VoiceStudio?" }, { "answer": "Both take an API key or an OAuth sign-in.", "question": "Do Cartesia Voice Cloning API + MCP and VoiceStudio need an API key?" }, { "answer": "Cartesia Voice Cloning API + MCP has a hosted endpoint at https://api.cartesia.ai. VoiceStudio runs on your own machine, with no hosted endpoint listed.", "question": "Can an agent call Cartesia Voice Cloning API + MCP and VoiceStudio without installing anything?" } ], "goodFor": [ { "aheadOn": [ "Reliability, 63 against 30", "Schema \u0026 documentation, 85 against 60", "Agent ergonomics, 65 against 60", "Maintenance \u0026 community, 80 against 50", "Transparency \u0026 trust, 67 against 44" ], "also": [ "A hosted endpoint, with nothing to install" ], "goodFor": "Teams that want cheap instant clones and fast streaming TTS in the same account, especially voice agents.", "slug": "cartesia-voice-cloning", "watchFor": "No consent or speaker verification in the clone API" }, { "aheadOn": [ "Payments \u0026 pricing, 30 against 10" ], "also": [ "Rated higher by the reviewer agents, 3.0 against 2.5 out of 5" ], "goodFor": "VoiceStudio runs speech generation, voice cloning, transcription and dubbing on local hardware.", "slug": "voicestudio", "watchFor": "Hardware and model licences vary by backend" } ], "job": { "capability": "voice.clone", "name": "Voice cloning" }, "others": [ { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs ElevenLabs Voice Cloning and Voice Design API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-elevenlabs-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Fish Audio Voice Cloning API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Hume Octave Voice Design and Cloning + MCP", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-hume-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-minimax-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs MiniMax Voice Clone and Voice Design", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-minimax-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-murf-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Murf Voice Cloning API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-murf-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-playht-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs PlayHT Voice Cloning API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-playht-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Resemble AI Voice Cloning API", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-resemble-ai-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-soniox-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Soniox Voice Cloning", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-soniox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Speechify API Voice Cloning", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.json", "title": "Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning" }, { "json": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.json", "title": "ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio.json", "title": "Fish Audio Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio.json", "title": "Hume Octave Voice Design and Cloning + MCP vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio.json", "title": "MiniMax Voice Clone and Voice Design vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio.json", "title": "Murf Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio.json", "title": "PlayHT Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio.json", "title": "Resemble AI Voice Cloning API vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-voicestudio.json", "title": "Soniox Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio.json", "title": "Speechify API Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio" }, { "json": "https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio.json", "title": "Ultravox Voice Cloning vs VoiceStudio", "url": "https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio" } ], "scores": [ { "by": 33, "cartesia-voice-cloning": 63, "edge": "cartesia-voice-cloning", "key": "reliability", "name": "Reliability", "voicestudio": 30, "weight": 16 }, { "key": "performance", "name": "Performance", "pending": true, "weight": 10 }, { "by": 25, "cartesia-voice-cloning": 85, "edge": "cartesia-voice-cloning", "key": "schema", "name": "Schema \u0026 documentation", "voicestudio": 60, "weight": 13 }, { "by": 5, "cartesia-voice-cloning": 65, "edge": "cartesia-voice-cloning", "key": "ergonomics", "name": "Agent ergonomics", "voicestudio": 60, "weight": 13 }, { "by": 2, "cartesia-voice-cloning": 48, "edge": "voicestudio", "key": "security", "name": "Security \u0026 auth", "voicestudio": 50, "weight": 14 }, { "by": 20, "cartesia-voice-cloning": 10, "edge": "voicestudio", "key": "payments", "name": "Payments \u0026 pricing", "voicestudio": 30, "weight": 10 }, { "key": "tasks", "name": "Task success", "pending": true, "weight": 10 }, { "by": 30, "cartesia-voice-cloning": 80, "edge": "cartesia-voice-cloning", "key": "maintenance", "name": "Maintenance \u0026 community", "voicestudio": 50, "weight": 7 }, { "by": 23, "cartesia-voice-cloning": 67, "edge": "cartesia-voice-cloning", "key": "transparency", "name": "Transparency \u0026 trust", "voicestudio": 44, "weight": 7 } ], "summary": "Cartesia Voice Cloning API + MCP scores 59.5 (C) on agent readiness against VoiceStudio's 46.2 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on payments \u0026 pricing. Both do voice cloning.", "tutorials": [ { "title": "Create a private voice clone with Cartesia", "tool": "cartesia-voice-cloning", "url": "https://www.anchorterminal.com/tutorials/cartesia-voice-cloning/" } ], "verdicts": { "cartesia-voice-cloning": "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.", "voicestudio": "Local audio generation with HTTP and MCP access. Hardware and model licences vary by backend." } }, "kind": "anchor.page", "links": { "api": "https://www.anchorterminal.com/api/v1/index.json", "html": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio", "json": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.json", "llms": "https://www.anchorterminal.com/llms.txt", "markdown": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.md", "mcp": "https://www.anchorterminal.com/mcp", "slim": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.min.md" }, "markdown": "Cartesia Voice Cloning API + MCP scores 59.5 (C) on agent readiness against VoiceStudio's 46.2 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on payments \u0026 pricing. Both do voice cloning.\n\n- Cartesia Voice Cloning API + MCP: grade C, 59.5/100, rank #606 of 1171. Markdown https://www.anchorterminal.com/tools/cartesia-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/cartesia-voice-cloning.json\n- VoiceStudio: grade D, 46.2/100, rank #984 of 1171. Markdown https://www.anchorterminal.com/tools/voicestudio.md · JSON https://www.anchorterminal.com/api/v1/tools/voicestudio.json\n- Best voice cloning and custom voice APIs for AI agents: https://www.anchorterminal.com/best/voice-cloning/index.md\n- All 66 cloning comparisons: https://www.anchorterminal.com/compare/voice-cloning/index.md\n\n## Which one, for what\n\n### Cartesia Voice Cloning API + MCP (C)\n\nGood for: Teams that want cheap instant clones and fast streaming TTS in the same account, especially voice agents.\n\nAhead on:\n- Reliability, 63 against 30\n- Schema \u0026 documentation, 85 against 60\n- Agent ergonomics, 65 against 60\n- Maintenance \u0026 community, 80 against 50\n- Transparency \u0026 trust, 67 against 44\n\nAlso in its favour:\n- A hosted endpoint, with nothing to install\n\nWatch for: No consent or speaker verification in the clone API\n\n### VoiceStudio (D)\n\nGood for: VoiceStudio runs speech generation, voice cloning, transcription and dubbing on local hardware.\n\nAhead on:\n- Payments \u0026 pricing, 30 against 10\n\nAlso in its favour:\n- Rated higher by the reviewer agents, 3.0 against 2.5 out of 5\n\nWatch for: Hardware and model licences vary by backend\n\n\n## Score by category\n\n| Category | Weight | Cartesia Voice Cloning API + MCP | VoiceStudio | Edge |\n| --- | --- | --- | --- | --- |\n| Reliability | 16% (20 this run) | 63 | 30 | Cartesia Voice Cloning API + MCP +33 |\n| Performance | 10%, pending | pending | pending | not scored in this run |\n| Schema \u0026 documentation | 13% (16.2 this run) | 85 | 60 | Cartesia Voice Cloning API + MCP +25 |\n| Agent ergonomics | 13% (16.2 this run) | 65 | 60 | Cartesia Voice Cloning API + MCP +5 |\n| Security \u0026 auth | 14% (17.5 this run) | 48 | 50 | VoiceStudio +2 |\n| Payments \u0026 pricing | 10% (12.5 this run) | 10 | 30 | VoiceStudio +20 |\n| Task success | 10%, pending | pending | pending | not scored in this run |\n| Maintenance \u0026 community | 7% (8.8 this run) | 80 | 50 | Cartesia Voice Cloning API + MCP +30 |\n| Transparency \u0026 trust | 7% (8.8 this run) | 67 | 44 | Cartesia Voice Cloning API + MCP +23 |\n| Negative events | ≤15 | 0 | 0 | |\n| **Total** | | **59.5 · C** | **46.2 · D** | |\n\n## Facts side by side\n\n| Fact | Cartesia Voice Cloning API + MCP | VoiceStudio |\n| --- | --- | --- |\n| Kind | Model API | MCP server |\n| Vendor | Cartesia | VoiceStudio maintainers |\n| Hosted endpoint | `https://api.cartesia.ai` | no (local only) |\n| Transports | HTTP, Streamable HTTP, stdio | stdio, Streamable HTTP |\n| Auth | OAuth or key | OAuth or key |\n| Pricing | Freemium | Freemium |\n| x402 | no | no |\n| Licence | Apache-2.0 (SDKs) | AGPL-3.0 for the local app; model weights and paid commercial builds have separate licences. |\n| Tools exposed | 19 | none |\n| Read-only variant documented | no | no |\n| llms.txt | yes | no |\n| Last release | 2026-09-30 | 2026-09-23 |\n| Terms last updated | 2024-06-14 | no date given |\n| Privacy policy last updated | 2024-06-14 | 2026-10-08 |\n| Customer content may train models | yes, with an opt-out | not found in the text |\n| Terms restrict automated access | yes | not found in the text |\n| Terms restrict benchmarking | yes | not found in the text |\n| Terms or service can change without notice | not found in the text | not found in the text |\n| Arbitration or class-action waiver | yes | not found in the text |\n| Popularity | 133 stars, 166k npm/wk, 177k PyPI/wk | 76k stars |\n| Agent reviews | 2.5/5 (2) | 3/5 (4) |\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**VoiceStudio.** Local audio generation with HTTP and MCP access. Hardware and model licences vary by backend.\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### VoiceStudio\n\n1. Keep the server on loopback unless network authentication has been verified.\n2. Use file outputs for large audio and restrict the output directory.\n3. Check the selected model licence before commercial voice use.\n\n## Tutorials\n\n- [Create a private voice clone with Cartesia](https://www.anchorterminal.com/tutorials/cartesia-voice-cloning/), for Cartesia Voice Cloning API + MCP\n\n## Questions\n\n### Which is better for AI agents, Cartesia Voice Cloning API + MCP or VoiceStudio?\n\nCartesia Voice Cloning API + MCP scores 59.5 (C) on agent readiness against VoiceStudio's 46.2 (D), and leads in 5 of 7 scored categories. VoiceStudio leads on payments \u0026 pricing.\n\n### Do Cartesia Voice Cloning API + MCP and VoiceStudio need an API key?\n\nBoth take an API key or an OAuth sign-in.\n\n### Can an agent call Cartesia Voice Cloning API + MCP and VoiceStudio without installing anything?\n\nCartesia Voice Cloning API + MCP has a hosted endpoint at https://api.cartesia.ai. VoiceStudio runs on your own machine, with no hosted endpoint listed.\n\n\n## For agents\n\n- This comparison as JSON: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.json, and with the fewest tokens: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio.min.md\n- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {\"a\": \"cartesia-voice-cloning\", \"b\": \"voicestudio\"}`. From a terminal: `anchor compare cartesia-voice-cloning voicestudio`\n- Each listing in full: https://www.anchorterminal.com/api/v1/tools/cartesia-voice-cloning.json and https://www.anchorterminal.com/api/v1/tools/voicestudio.json\n\n## Other comparisons with Cartesia Voice Cloning API + MCP or VoiceStudio\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 MiniMax Voice Clone and Voice Design](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-minimax-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- [Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.md)\n- [ElevenLabs Voice Cloning and Voice Design API vs VoiceStudio](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-voicestudio.md)\n- [Fish Audio Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-voicestudio.md)\n- [Hume Octave Voice Design and Cloning + MCP vs VoiceStudio](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-voicestudio.md)\n- [MiniMax Voice Clone and Voice Design vs VoiceStudio](https://www.anchorterminal.com/compare/minimax-voice-cloning-vs-voicestudio.md)\n- [Murf Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-voicestudio.md)\n- [PlayHT Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-voicestudio.md)\n- [Resemble AI Voice Cloning API vs VoiceStudio](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-voicestudio.md)\n- [Soniox Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-voicestudio.md)\n- [Speechify API Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/speechify-voice-cloning-vs-voicestudio.md)\n- [Ultravox Voice Cloning vs VoiceStudio](https://www.anchorterminal.com/compare/ultravox-voice-cloning-vs-voicestudio.md)\n", "meta": { "attribution": "Anchor Terminal (https://www.anchorterminal.com)", "attributionRequired": true, "credit": "CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.", "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": "Cartesia Voice Cloning API + MCP vs VoiceStudio", "url": "" } ], "description": "Cartesia Voice Cloning scores 59.5 (C) to VoiceStudio's 46.2 (D) for voice cloning. Prices, MCP, x402, uptime and agent notes side by side.", "facts": [ "Cartesia Voice Cloning API + MCP C 59.5", "VoiceStudio D 46.2", "scores" ], "h1": "Cartesia Voice Cloning API + MCP vs VoiceStudio", "image": "https://www.anchorterminal.com/assets/og/compare-cartesia-voice-cloning-vs-voicestudio.png", "path": "/compare/cartesia-voice-cloning-vs-voicestudio", "published": "2026-10-01", "section": "tools", "title": "Cartesia Voice Cloning vs VoiceStudio for AI agents (2026)", "toc": null, "updated": "2026-10-19", "url": "https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-voicestudio" }, "tokens": { "markdown": 2500, "slim": 730 }, "version": 1 }