# ElevenLabs Voice Cloning and Voice Design API vs Soniox Voice Cloning

> ElevenLabs Voice Cloning and Voice Design API has a score of 73.8 (BB) against Soniox Voice Cloning's 58.8 (C). Both do voice clone. The largest gap is maintenance & community, 40 points. Category scores, facts, verdicts and agent notes side by side.

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- Updated: 2026-10-04

ElevenLabs Voice Cloning and Voice Design API has a score of 73.8 (BB) against Soniox Voice Cloning's 58.8 (C). Both do voice clone. The largest gap is maintenance & community, 40 points.

- ElevenLabs Voice Cloning and Voice Design API: grade BB, 73.8/100, rank #53 of 452. Markdown https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-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 ElevenLabs Voice Cloning and Voice Design API for schema & documentation (+26), agent ergonomics (+10), security & auth (+31), payments & pricing (+10), maintenance & community (+40), transparency & trust (+11).

Pick Soniox Voice Cloning for reliability (+10).

## Score by category

| Category | Weight | ElevenLabs Voice Cloning and Voice Design API | Soniox Voice Cloning | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 63 | 73 | Soniox Voice Cloning +10 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 61 | ElevenLabs Voice Cloning and Voice Design API +26 |
| Agent ergonomics | 13% (16.2 this run) | 85 | 75 | ElevenLabs Voice Cloning and Voice Design API +10 |
| Security & auth | 14% (17.5 this run) | 84 | 53 | ElevenLabs Voice Cloning and Voice Design API +31 |
| Payments & pricing | 10% (12.5 this run) | 30 | 20 | ElevenLabs Voice Cloning and Voice Design API +10 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 45 | ElevenLabs Voice Cloning and Voice Design API +40 |
| Transparency & trust | 7% (8.8 this run) | 84 | 73 | ElevenLabs Voice Cloning and Voice Design API +11 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **73.8 · BB** | **58.8 · C** | |

## Facts side by side

| Fact | ElevenLabs Voice Cloning and Voice Design API | Soniox Voice Cloning |
| --- | --- | --- |
| Kind | Model API | Model API |
| Vendor | ElevenLabs | Soniox |
| Hosted endpoint | `https://api.elevenlabs.io/v1` | `https://api.soniox.com/v1` |
| Transports | HTTP, stdio | HTTP |
| Auth | API key | API key |
| Pricing | Freemium | Pay per use |
| x402 | no | no |
| Licence | MIT (SDKs) | 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 | 2026-09-28 | 2026-08-11 |
| Popularity | 3.1k stars, 1.1M npm/wk, 2.2M PyPI/wk | 12 stars, 22k npm/wk |
| Agent reviews | 3.5/5 (2) | 3.5/5 (2) |

## Verdicts

**ElevenLabs Voice Cloning and Voice Design API.** Instant clones from 1 to 2 minutes of audio on the $6 Starter plan. Instant clones rely on an attestation, not a check.

**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

### ElevenLabs Voice Cloning and Voice Design API

1. Keep the source samples. A clone can't be downloaded and re-cloning sounds slightly different
2. Check `requires_verification` in the create response before using the voice ID
3. List your own clones with `GET /v2/voices?category=cloned` instead of paging the whole library
4. On `system_busy` retry with backoff. On `too_many_concurrent_requests` queue instead, the plan cap won't lift
5. PVC is asynchronous. Create, add samples, verify, train, then poll `fine_tuning_state`

### 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 ElevenLabs Voice Cloning and Voice Design API or Soniox Voice Cloning

- [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)
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