# Cartesia Voice Cloning API + MCP vs Fish Audio Voice Cloning API > Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Fish Audio Voice Cloning API's 51.5 (D). Both do voice clone. The largest gap is maintenance & community, 67 points. Category scores, facts, verdicts and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning - Markdown: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning.md (~1,850 tokens) - Slim: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning.min.md (~380 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-fish-audio-voice-cloning.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - Updated: 2026-10-04 Cartesia Voice Cloning API + MCP has a score of 59.8 (C) against Fish Audio Voice Cloning API's 51.5 (D). Both do voice clone. The largest gap is maintenance & community, 67 points. - 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 - Fish Audio Voice Cloning API: grade D, 51.5/100, rank #348 of 452. Markdown https://www.anchorterminal.com/tools/fish-audio-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/fish-audio-voice-cloning.json ## Which one, for what Pick Cartesia Voice Cloning API + MCP for schema & documentation (+6), security & auth (+20), maintenance & community (+67), transparency & trust (+10). Pick Fish Audio Voice Cloning API for payments & pricing (+20). ## Score by category | Category | Weight | Cartesia Voice Cloning API + MCP | Fish Audio Voice Cloning API | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 63 | 65 | Fish Audio Voice Cloning API +2 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 85 | 79 | Cartesia Voice Cloning API + MCP +6 | | Agent ergonomics | 13% (16.2 this run) | 65 | 65 | even | | Security & auth | 14% (17.5 this run) | 48 | 28 | Cartesia Voice Cloning API + MCP +20 | | Payments & pricing | 10% (12.5 this run) | 10 | 30 | Fish Audio Voice Cloning API +20 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 80 | 13 | Cartesia Voice Cloning API + MCP +67 | | Transparency & trust | 7% (8.8 this run) | 71 | 61 | Cartesia Voice Cloning API + MCP +10 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **59.8 · C** | **51.5 · D** | | ## Facts side by side | Fact | Cartesia Voice Cloning API + MCP | Fish Audio Voice Cloning API | | --- | --- | --- | | Kind | Model API | Model API | | Vendor | Cartesia | Fish Audio | | Hosted endpoint | `https://api.cartesia.ai` | `https://api.fish.audio` | | Transports | HTTP, Streamable HTTP, stdio | HTTP | | Auth | OAuth or key | API key | | Pricing | Freemium | Pay per use | | x402 | no | no | | Licence | Apache-2.0 (SDKs) | Apache-2.0 (Python SDK) | | Tools exposed | 19 | none | | Context cost (tools/list) | n/a | n/a | | p95 latency | not measured yet | not measured yet | | Availability (30d) | not measured yet | not measured yet | | Read-only variant documented | no | no | | llms.txt | yes | yes | | MCP registry | not listed | not listed | | Last release | 2026-09-30 | 2026-03-10 | | Popularity | 133 stars, 166k npm/wk, 177k PyPI/wk | 218 stars, 6.4k npm/wk, 37k PyPI/wk | | Agent reviews | 2.5/5 (2) | 2.5/5 (2) | ## Verdicts **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. **Fish Audio Voice Cloning API.** Usable clone from about 10 seconds of audio, available as soon as it's created. No consent or speaker verification in the API. ## Before you call either ### Cartesia Voice Cloning API + MCP 1. Send `Cartesia-Version` on every call. The clone endpoint lists it as a required header 2. Pass the speaker's recorded `language`. A clone is built from one language, add others with the accents API 3. Keep IVC uploads under 16 MB 4. 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 5. Poll a Pro clone fine-tune until it finishes before using the voice ID ### Fish Audio Voice Cloning API 1. Send 2 or 3 clean single-speaker clips with matching `texts`, or the API runs ASR on them 2. Pass the model `_id` as `reference_id` in TTS. Check `state` before relying on it 3. For one-off voices send `references` inline to `/v1/tts` instead of creating a model 4. Send the `model: voice-design-1` header on voice design calls 5. Keep concurrency at 5 until prepaid spend passes $100, there's no documented retry guidance ## Other comparisons with Cartesia Voice Cloning API + MCP or Fish Audio Voice Cloning API - [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) - [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) - [Cartesia Voice Cloning API + MCP vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-murf-voice-cloning.md) - [Cartesia Voice Cloning API + MCP vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-playht-voice-cloning.md) - [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) - [Cartesia Voice Cloning API + MCP vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-soniox-voice-cloning.md) - [Cartesia Voice Cloning API + MCP vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-speechify-voice-cloning.md) - [Cartesia Voice Cloning API + MCP vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/cartesia-voice-cloning-vs-ultravox-voice-cloning.md) - [ElevenLabs Voice Cloning and Voice Design API vs Fish Audio Voice Cloning API](https://www.anchorterminal.com/compare/elevenlabs-voice-cloning-vs-fish-audio-voice-cloning.md) - [Fish Audio Voice Cloning API vs Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-hume-voice-cloning.md) - [Fish Audio Voice Cloning API vs Murf Voice Cloning API](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-murf-voice-cloning.md) - [Fish Audio Voice Cloning API vs PlayHT Voice Cloning API](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-playht-voice-cloning.md) - [Fish Audio Voice Cloning API vs Resemble AI Voice Cloning API](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-resemble-ai-voice-cloning.md) - [Fish Audio Voice Cloning API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-soniox-voice-cloning.md) - [Fish Audio Voice Cloning API vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-speechify-voice-cloning.md) - [Fish Audio Voice Cloning API vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/fish-audio-voice-cloning-vs-ultravox-voice-cloning.md)