Pending benchmarksTracking since Oct 20, 2026
Is Pocket TTS 4.0 state of the art?Pending benchmarks.Announced Oct 20, 2026; no independent results yet.
Kyutai's Pocket TTS v4.0.0 release: six small English text-to-speech models with voice cloning, at 18.2M, 6.9M and 1.9M parameters, each with a reward-fine-tuned variant. Weights, training and inference code are open; the smallest model is reported to run about 103× faster than real time on one CPU core. Not an LLM.
Announced facts
The details so far
- Lab
- Kyutai
- Announced
- Oct 20, 2026
- API
- Not yet
- Open weights
- Published
- Parameters
- 18.2M, 6.9M and 1.9M (decoder included)
- Models
- english_18m_2026-10, english_7m_2026-10 and english_2m_2026-10 (experimental), each with a _refl variant that adds reward fine-tuning
- Earlier Pocket TTS
- About 100M parameters; still available. The new 18.2M model has the original's quality (lab statement)
- Voice cloning
- Yes, in all six models
- Code
- MIT (kyutai-labs/pocket-tts); training code public since August 2026; v4.0.0 also ships prebuilt runtime binaries
- Weights
- Hugging Face kyutai/pocket-tts, CC BY 4.0, access requires accepting the terms
Tags marked unsure are not stated on the lab's own pages.
Next steps
What would let us call it
Verdicts use only independent boards we already track. Two consecutive snapshots are required before any crown.
- Publicly announced with a source
- Usable by the public (API or weights)
- Listed on an independent board we track
- Enough results for a rank in a category
- Holds across two snapshots (crowns only)
Self-reported
What the lab claims
Self-reported. Shown for context; not used in any verdict.
Lab claim: the 1.9M model runs 103× faster than real time on one CPU core, and the 18.2M model matches the quality of the original Pocket TTS.
Receipts
Sources
LABKyutai post on X with the new model sizesx.com/kyutai_labs/status/2112554656459084053 · Oct 20, 2026LABKyutai announcement on Xx.com/kyutai_labs/status/2112565301816475970 · Oct 20, 2026LABPost on X by Kyutai's Alexandre Défossezx.com/honualx/status/2112568675878486460 · Oct 20, 2026REPOpocket-tts v4.0.0 release on GitHubgithub.com/kyutai-labs/pocket-tts/releases/tag/v4.0.0 · Oct 20, 2026REPOkyutai/pocket-tts on Hugging Facehuggingface.co/kyutai/pocket-tts · Oct 20, 2026Tracking continues until an independent board lists it.