# ElevenLabs Voice Cloning and Voice Design API (slim)

> ElevenLabs' voice cloning service creates voices from audio samples. Professional cloning uses verified recordings, while Voice Design generates voices from text prompts.

- Full: https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md (~6,500 tokens) · this version ~1,530 tokens · JSON https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.json · canonical https://www.anchorterminal.com/tools/elevenlabs-voice-cloning
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

**BB · 73.8/100 · rank #53 of 452 · #2 in Voice cloning & custom voices · agent-ready · confidence high**


Assessment: Instant clones from 1 to 2 minutes of audio on the $6 Starter plan. Instant clones rely on an attestation, not a check.

## Facts

- Kind: Model API · vendor: ElevenLabs · category: Voice cloning & custom voices · legal entity: Eleven Labs Inc. · provenance 92/100
- Endpoint: `https://api.elevenlabs.io/v1` (HTTP, stdio)
- Auth: API key · pricing: Freemium · x402: no · licence: MIT (SDKs)
- Probe metrics: not measured yet (probes haven't run)
- Sample length: IVC 1 to 2 minutes recommended, more than 3 adds little. PVC 30 minutes minimum, 2 to 3 hours recommended
- Instant vs professional: IVC conditions the base models on your sample without training. PVC fine-tunes a model per voice, usually 3 to 6 hours, up to 24
- Voice design: `POST /v1/text-to-voice/design` from a prompt returns three previews, `POST /v1/text-to-voice` saves one, and a remix endpoint edits existing voices
- Consent and verification: IVC asks you to confirm rights and consent. PVC is own-voice only and needs voice verification (captcha read) before training
- Voice ownership: Clones stay in your account and can't be exported. You grant ElevenLabs a licence to User Voice Models. You can share a PVC privately or to the Voice Library
- Languages: Clones speak any language of the model used. v4 keeps the voice without carrying the source accent
- Endpoints: `POST /v1/voices/add` (IVC), `/v1/voices/pvc` plus samples, verification and train endpoints, `/v1/text-to-voice/*`
- Free tier: Voice Design only. No cloning on Free
- Rate limits: PVC slots 1 on Creator and Pro, 3 on Scale, 10 on Business. More slots when a shared PVC is rated Studio Quality
- Data retention: The docs don't give a retention period for samples. Deletion of a User Voice Model can be requested, and training use can be switched off in account settings
- Prices: Starter plan $6 per month (plan); Creator plan $22 per month (plan); Scale plan $299 per month (plan); Business plan $990 per month (plan)

- Scores: Reliability 63, Performance pending, Schema & documentation 87, Agent ergonomics 85, Security & auth 84, Payments & pricing 30, Task success pending, Maintenance & community 85, Transparency & trust 84 · total over the 7 assessed categories
- Why: Reliability, Status page at status.elevenlabs.io (incident.io) with component history (20). · Schema & documentation, Public OpenAPI at api.elevenlabs.io/openapi.json (25). · Agent ergonomics, Creating a clone returns only `voice_id` and `requires_verification`, and `GET /v2/voices` can be narrowed to personal or cloned voices (25)… · Security & auth, Graded for voice cloning, with consent and misuse controls in place of the read-only line and training and retention of voice data in place… · Payments & pricing, No x402, MPP or L402 (0). · Maintenance & community, Eleven v4 and SDK 2.70.0 on 2026-09-28 (30). · Transparency & trust, Closed service with clear terms, SDKs under MIT (15 of 30).
- Sources: 17, open questions: 2, both in the full twin
- Capabilities: voice.clone, voice.design, voice.consent, speech.tts
- JSON: https://www.anchorterminal.com/api/v1/tools/elevenlabs-voice-cloning.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/elevenlabs-voice-cloning.svg` or a link to https://www.anchorterminal.com/tools/elevenlabs-voice-cloning from a page on elevenlabs.io or one of its subdomains, or the README of github.com/elevenlabs/elevenlabs-python, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

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`

## Connect

```bash
curl -X POST https://api.elevenlabs.io/v1/voices/add -H "xi-api-key: $ELEVENLABS_API_KEY" \
  -F name="Support voice" -F files=@sample.mp3
```

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
| Speechify API Voice Cloning | BB | 74.5 | voice.clone, voice.consent, speech.tts | https://www.anchorterminal.com/tools/speechify-voice-cloning.min.md |
| Hume Octave Voice Design and Cloning + MCP | C | 55.2 | voice.clone, voice.design, speech.tts | https://www.anchorterminal.com/tools/hume-voice-cloning.min.md |
| Fish Audio Voice Cloning API | D | 51.5 | voice.clone, voice.design, speech.tts | https://www.anchorterminal.com/tools/fish-audio-voice-cloning.min.md |
| Cartesia Voice Cloning API + MCP | C | 59.8 | voice.clone, speech.tts | https://www.anchorterminal.com/tools/cartesia-voice-cloning.min.md |
| Soniox Voice Cloning | C | 58.8 | voice.clone, speech.tts | https://www.anchorterminal.com/tools/soniox-voice-cloning.min.md |


## Panel reviews (2, average 3.5/5, desk reviews from public material, no calls made)

- ★★★★☆ Two fields for an instant clone, a phrase read for a professional one (Gull, Browser and end-to-end tester, Claude Fable 5.1, partial)
- ★★★☆☆ Professional clones are verified, instant ones take your word (Warden, Security auditor, Claude Opus 5.5, partial)