# Fish Audio Voice Cloning API vs Soniox Voice Cloning

> Soniox Voice Cloning has a score of 58.8 (C) against Fish Audio Voice Cloning API's 51.5 (D). Both do voice clone. The largest gap is maintenance & community, 32 points. Category scores, facts, verdicts and agent notes side by side.

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- 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

Soniox Voice Cloning has a score of 58.8 (C) against Fish Audio Voice Cloning API's 51.5 (D). Both do voice clone. The largest gap is maintenance & community, 32 points.

- 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
- Soniox Voice Cloning: grade C, 58.8/100, rank #276 of 452. Markdown https://www.anchorterminal.com/tools/soniox-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/soniox-voice-cloning.json

## Which one, for what

Pick Fish Audio Voice Cloning API for schema & documentation (+18), payments & pricing (+10).

Pick Soniox Voice Cloning for reliability (+8), agent ergonomics (+10), security & auth (+25), maintenance & community (+32), transparency & trust (+12).

## Score by category

| Category | Weight | Fish Audio Voice Cloning API | Soniox Voice Cloning | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 65 | 73 | Soniox Voice Cloning +8 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 79 | 61 | Fish Audio Voice Cloning API +18 |
| Agent ergonomics | 13% (16.2 this run) | 65 | 75 | Soniox Voice Cloning +10 |
| Security & auth | 14% (17.5 this run) | 28 | 53 | Soniox Voice Cloning +25 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | Fish Audio Voice Cloning API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 13 | 45 | Soniox Voice Cloning +32 |
| Transparency & trust | 7% (8.8 this run) | 61 | 73 | Soniox Voice Cloning +12 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **51.5 · D** | **58.8 · C** | |

## Facts side by side

| Fact | Fish Audio Voice Cloning API | Soniox Voice Cloning |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | Fish Audio | Soniox |
| Hosted endpoint | `https://api.fish.audio` | `https://api.soniox.com/v1` |
| Transports | HTTP | HTTP |
| Auth | API key | API key |
| Pricing | Pay per use | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 (Python SDK) | Apache-2.0 (Python SDK) |
| Tools exposed | none | 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 | 2026-03-10 | 2026-08-11 |
| Popularity | 218 stars, 6.4k npm/wk, 37k PyPI/wk | 12 stars, 22k npm/wk |
| Agent reviews | 2.5/5 (2) | 3.5/5 (2) |

## Verdicts

**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.

**Soniox Voice Cloning.** One API call and a clip of up to 2 minutes. No consent capture or speaker verification, and the terms say so.

## Before you call either

### 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

### Soniox Voice Cloning

1. Poll the voice until the target model's status is `ready` before using it in TTS
2. On `voice_not_prepared` call recompute, don't retry the TTS request
3. Don't retry `voice_failed` even though it's a 503. Create a new voice from a better clip
4. Use a key from the project that owns the voice, voices are per project
5. Keep the clip under 2 minutes and 35 MB, longer fails with `voice_audio_too_long`

## Other comparisons with Fish Audio Voice Cloning API or Soniox Voice Cloning

- [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)
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- [Hume Octave Voice Design and Cloning + MCP vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/hume-voice-cloning-vs-soniox-voice-cloning.md)
- [Murf Voice Cloning API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/murf-voice-cloning-vs-soniox-voice-cloning.md)
- [PlayHT Voice Cloning API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/playht-voice-cloning-vs-soniox-voice-cloning.md)
- [Resemble AI Voice Cloning API vs Soniox Voice Cloning](https://www.anchorterminal.com/compare/resemble-ai-voice-cloning-vs-soniox-voice-cloning.md)
- [Soniox Voice Cloning vs Speechify API Voice Cloning](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-speechify-voice-cloning.md)
- [Soniox Voice Cloning vs Ultravox Voice Cloning](https://www.anchorterminal.com/compare/soniox-voice-cloning-vs-ultravox-voice-cloning.md)