Open source #Open models Oct 26, 2026 · Originally published Oct 24

Ollama 0.40.11 adds text-to-speech, starting with Phonon, 35% faster than Gradium's own runtime on an M5 Max

The local model runner now does speech output. This covers what Phonon supports, how to call it, and the licensing catch.

Primary source Ollama Blog · ollama.com Read the original ↗

// Key points

  • The first speech model is Phonon, a small TTS family from Gradium. It runs on macOS only for now (Apple Silicon, accelerated by MLX), with Windows and Linux coming later, and needs Ollama 0.40.11 or later.
  • On a MacBook Pro with M5 Max, Ollama measured 35% faster than the next fastest engine, Gradium's own runtime, and matched the reference Hugging Face Transformers implementation's word error rate on 200 Seed-TTS English sentences.
  • It works with the OpenAI-compatible /v1/audio/speech endpoint, so existing OpenAI SDK code only needs a new base URL. Audio streams as it is generated, 24 kHz mono, WAV by default or raw PCM.
  • phonon itself is Apache 2.0; the 40M French, German, Spanish, Portuguese and multilingual models are CC BY-NC 4.0, noncommercial only.

Builder's takeFor a product that has to speak, like AI Interview, I'd prototype local voice on a Mac with Phonon first; the interface matches OpenAI's, so switching back to the cloud costs almost nothing. Check the license before launch, though: only the English model is commercial-use, there's no Chinese, and the multilingual ones are noncommercial.

// Background · from #Open models

Full timeline →
  1. Oct 26 Google details TB screening in the field: a partner device has read 25,000 chest X-rays, and open MedGemma has passed 10 million downloads
  2. Oct 25 Hugging Face launches a Trainium compatibility lookup: whether a Hub model runs unmodified on Trainium, with a script to run it yourself
  3. Oct 25 Tencent's WeChat Vision team open-sources WeVisOne-VL 2B and 4B under Apache 2.0: one model for detection, grounding, counting, OCR, segmentation and matting

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