Voice · segment

Open-weights

Open model licence — self-hostable.

No independent measure ranks this whole set, so no crown. Shortlist ordered by Weights; the basis is stated, not hidden.

3 eligibledata as of 2026-07-04

Kokoro hexgrad A live

API & price: self-host only (no official vendor API)
Voices: 54
Voice cloning: no
Languages: 8
Weights: open · Apache-2.0
Free tier: open self-host

Quality 1059Artificial Analysis Speech Arena (Kokoro 82M) ↗

Open-weightsBest free ✓ 2026-07-04

Fish Audio (OpenAudio) Fish Audio B live

API & price: public · ~$15/1M chars (PAYG)
Voices: clone/slot-driven library
Voice cloning: yes · instant
Languages: 80+
Weights: open · Fish Audio Research License
Free tier: open self-host

Quality 1146Artificial Analysis Speech Arena (S2.1 Pro) ↗

Best for APIVoice cloningBest freeOpen-weights ✓ 2026-07-04

Chatterbox Resemble AI A live

API & price: self-host only (open weights)
Voices: any (design)
Voice cloning: yes · instant
Languages: 23
Weights: open · MIT
Free tier: watermarked

Quality 1479TTS Arena V2 ↗

Open-weightsVoice cloningBest free ✓ 2026-07-04