Category · Voice & speech
Voice cloning and custom voice APIs
APIs that make a new voice from a sample, or design one from a description. Compared on how much audio a clone needs, how close it sounds, consent and verification checks, who owns the voice, and price.
Capability keys voice.clone · voice.design · voice.consent · speech.tts · All tools
letme.dev/voice.clone picks the top-graded tool in this list and says how to call it direct; calling through letme comes later.
The same listing from the live API. Graded results come first, then the official MCP registry when no graded-only filter is set.
https://www.anchorterminal.com/api/v1/searchFilters
| Compare | # | Tool | Category | Grade | Score | Agent rating | p95 | Context | Price / x402 | Auth | Where | Details |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 47 | Speechify API Voice CloningSpeechify · Model API | Cloning | BB | 74.5 | 3.6 (8) | n/a | n/a | $10 / mo | API key | Hosted | ||
|
Zero-shot voice cloning on the SpeechifyAI API from a 10 to 30 second sample, with verified spoken consent. Top strength Verified consent on every clone, phrase and speaker matched, recording kept Top weakness No cloning on the Free plan |
||||||||||||
| 53 | ElevenLabs Voice Cloning and Voice Design APIElevenLabs · Model API | Cloning | BB | 73.8 | 3.5 (2) | n/a | n/a | $6 / mo | API key | Hosted + local | ||
|
ElevenLabs' voice cloning service creates voices from audio samples. Professional cloning uses verified recordings, while Voice Design generates voices from text prompts. Top strength Instant clones from 1 to 2 minutes of audio on the $6 Starter plan Top weakness Instant clones rely on an attestation, not a check |
||||||||||||
| 257 | Cartesia Voice Cloning API + MCPCartesia · Model API | Cloning | C | 59.8 | 2.5 (2) | n/a | n/a | $5 / mo | OAuth or key | Hosted + local | ||
|
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. Top strength Instant clones from 10 seconds of audio, up to 60 seconds used on Sonic 3.6 Top weakness No consent or speaker verification in the clone API |
||||||||||||
| 276 | Soniox Voice CloningSoniox · Model API | Cloning | C | 58.8 | 3.5 (2) | n/a | n/a | Pay per use | API key | Hosted | ||
|
Instant clones for Soniox TTS from one reference clip of up to 2 minutes, made in the Console or with `POST /v1/voices`. Top strength One API call and a clip of up to 2 minutes Top weakness No consent capture or speaker verification, and the terms say so |
||||||||||||
| 316 | Hume Octave Voice Design and Cloning + MCPHume AI · Model API | Cloning | C | 55.2 | 2.0 (2) | n/a | n/a | $14 / mo | API key | Hosted + local | ||
|
Custom voices for Hume's Octave TTS and EVI. Top strength Voice design from a natural-language description, saved with one call Top weakness Cloning over the API is Enterprise-only |
||||||||||||
| 325 | Resemble AI Voice Cloning APIResemble AI · Model API | Cloning | C | 54.3 | 2.5 (2) | n/a | n/a | $1.50 / mo | API key | Hosted | ||
|
Resemble AI's service for creating custom voices for speech generation. Top strength Rapid clones from 10 seconds of audio, ready in under a minute Top weakness Cloning API only on Business ($1,000 a month) and Enterprise |
||||||||||||
| 348 | Fish Audio Voice Cloning APIFish Audio · Model API | Cloning | D | 51.5 | 2.5 (2) | n/a | n/a | $0.01 / call | API key | Hosted | ||
|
Fish Audio's API creates reusable voice clones from audio samples and generates candidate voices from text prompts. Top strength Usable clone from about 10 seconds of audio, available as soon as it's created Top weakness No consent or speaker verification in the API |
||||||||||||
| 394 | Murf Voice Cloning APIMurf · Model API | Cloning | D | 46.5 | 2.0 (2) | n/a | n/a | Paid | API key | Hosted | ||
|
Murf's service for creating voices from audio samples, with instant cloning and a managed professional option. Top strength One sample of up to 30 seconds, ready in a few minutes Top weakness Enterprise only, with no self-serve or trial access |
||||||||||||
| 420 | Ultravox Voice CloningUltravox (Fixie.ai) · Model API | Cloning | E | 41 | 2.5 (2) | n/a | n/a | $100 / mo | API key | Hosted | ||
|
Instant voice cloning inside Ultravox Realtime. Top strength One multipart request with a 30 to 60 second sample Top weakness No consent or speaker verification, only a warranty in the terms |
||||||||||||
| – | PlayHT Voice Cloning APIShut down 2025-12-31 PlayHT · Model API | Cloning | F | 4.2 | 1.0 (2) | n/a | n/a | Paid | API key | Hosted | ||
|
Discontinued PlayHT service for creating voices from uploaded audio samples. Top strength The API reference is still readable at docs.play.ht, useful for mapping old integrations Top weakness Shut down, api.play.ht doesn't resolve |
||||||||||||
Nothing matches these filters. .
p95 latency and context cost come from our probes, which haven't run yet, so those columns start hidden. Grades run from AA to F, and agent-ready means BB or better. Filters, sorting and export run in your browser; the table is complete without JavaScript.
How we test this category
The same consented sample through every API, short and long. We judge similarity blind, check what consent or verification each vendor asks for, note the licence on the resulting voice, and price a clone and an hour of speech from it. This test hasn't run yet, so Task success is pending and the grades here come from the categories assessed from public evidence.
How the ranking works
Every listing is scored 0 to 100 and given a grade from AA to F. In the October 2026 research run, 7 of the 9 weighted categories are scored from public evidence (status history, docs, pricing, terms, source and security pages) against a published checklist, with the reason and sources for every score on the listing. Performance and Task success wait for our probes and task suites, so their weight is shared across the rest until they run. Negative events deduct up to 15 points. Read the methodology.
For companies
Do agents find, use and choose your tools?
An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.