# Best voice cloning and custom voice APIs for AI agents (slim)

> Speechify API Voice Cloning (BB), ElevenLabs Voice Cloning and Voice Design API (BB) and Cartesia Voice Cloning API + MCP (C) lead the 10 ranked voice cloning and custom voice APIs. Picks by need, strengths, weaknesses and prices from the Anchor benchmark.

- Full: https://www.anchorterminal.com/best/voice-cloning/index.md (~5,150 tokens) · this version ~1,430 tokens · JSON https://www.anchorterminal.com/best/voice-cloning/index.json · canonical https://www.anchorterminal.com/best/voice-cloning/
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-08

All 10 ranked voice cloning and custom voice APIs on the Anchor benchmark, with a pick for each need and where each one falls short. Scores come from public evidence, re-checked as vendors change.

- Ranked: 10 · agent-ready (BB or better): 2 · accept x402: 0 · hosted endpoints: 10
- Full ranked table: https://www.anchorterminal.com/categories/voice-cloning.md
- Head-to-head comparisons: https://www.anchorterminal.com/compare/voice-cloning/index.md (55)
- Methodology: https://www.anchorterminal.com/benchmark/index.md

## The shortlist

| # | Tool | Grade | Score | Best for | Price | Where |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | [Speechify API Voice Cloning](https://www.anchorterminal.com/tools/speechify-voice-cloning.md) | BB | 74.1 | Best where a consent record from the vendor matters, such as cloning staff or talent voices for a product. | $10 / mo | hosted |
| 2 | [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md) | BB | 73.6 | Teams that need instant clones, professional clones and prompt-designed voices in one account, with consent checks on the professional tier. | $6 / mo | hosted and local |
| 3 | [Cartesia Voice Cloning API + MCP](https://www.anchorterminal.com/tools/cartesia-voice-cloning.md) | C | 59.5 | Teams that want cheap instant clones and fast streaming TTS in the same account, especially voice agents. | $5 / mo | hosted and local |
| 4 | [Soniox Voice Cloning](https://www.anchorterminal.com/tools/soniox-voice-cloning.md) | C | 58.6 | A quick clone that has to speak many languages, from a vendor with clean data terms. | Pay per use | hosted |
| 5 | [Hume Octave Voice Design and Cloning + MCP](https://www.anchorterminal.com/tools/hume-voice-cloning.md) | C | 54.6 | Designing a voice from a description, and for teams already on EVI. | $14 / mo | hosted and local |
| 6 | [Resemble AI Voice Cloning API](https://www.anchorterminal.com/tools/resemble-ai-voice-cloning.md) | C | 54 | Teams already paying for Resemble's detection and watermarking who want clones in the same account. | $1.50 / mo | hosted |
| 7 | [MiniMax Voice Clone and Voice Design](https://www.anchorterminal.com/tools/minimax-voice-cloning.md) | D | 53.1 | Teams already using MiniMax speech models that want quick clones or prompt-designed voices at a flat fee per voice across 40 languages. | $1.50 / tx | hosted and local |
| 8 | [Fish Audio Voice Cloning API](https://www.anchorterminal.com/tools/fish-audio-voice-cloning.md) | D | 51.3 | Cheap, quick clones of your own voice and for prompt-designed voices at volume. | $0.01 / call | hosted |
| 9 | [Murf Voice Cloning API](https://www.anchorterminal.com/tools/murf-voice-cloning.md) | D | 46.1 | Enterprises already on Murf Falcon 2 that want a cloned voice in the same contract. | Paid | hosted |
| 10 | [Ultravox Voice Cloning](https://www.anchorterminal.com/tools/ultravox-voice-cloning.md) | E | 40.8 | Giving an Ultravox voice agent a custom voice. | $100 / mo | hosted |

## Picks by need

- Highest score overall: [Speechify API Voice Cloning](https://www.anchorterminal.com/tools/speechify-voice-cloning.md), BB, 74.1/100 on the benchmark. Also [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), BB, 73.6/100.
- Agent ergonomics: [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), 85/100 on agent ergonomics, against 82 for the overall leader.
- Security & auth: [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), 84/100 on security & auth, against 73 for the overall leader.
- Maintenance & community: [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), 85/100 on maintenance & community, against 75 for the overall leader.
- Transparency & trust: [ElevenLabs Voice Cloning and Voice Design API](https://www.anchorterminal.com/tools/elevenlabs-voice-cloning.md), 82/100 on transparency & trust, against 65 for the overall leader.
- A hosted MCP endpoint: [Cartesia Voice Cloning API + MCP](https://www.anchorterminal.com/tools/cartesia-voice-cloning.md), remote MCP server, nothing to install.
- Self-hosting under an open licence: [Fish Audio Voice Cloning API](https://www.anchorterminal.com/tools/fish-audio-voice-cloning.md), self-hosted, Apache-2 licence.

## How to choose

- Sample length needed: Check the shortest and longest sample each API accepts and how similarity changes between them, because the audio you hold may be short.
- Consent and verification steps: Check what consent or verification a voice needs before cloning, since a missed step can leave it unusable in the agent later.
- Licence on the resulting voice: Read who owns a cloned voice and under which licence it can be used, because terms for commercial calls and for keeping the voice after you cancel may differ.

- How the benchmark tests 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.

Each listing's verdict, strengths and weaknesses: https://www.anchorterminal.com/best/voice-cloning/index.md