Phonon-1 Big

This is the largest build of the Phonon-1 family, an open speech recognition model for English that downloads in 581 MB.

Benchmarks

Word error rate, lower is better. Measured by us — full test sets, Whisper English text normalizer, greedy decoding.

Run it

pip install fermion-research

fermion transcribe recording.wav --model FermionResearch/Phonon-1-Big

Or serve an OpenAI-compatible endpoint:

fermion serve --model FermionResearch/Phonon-1-Big

curl -s http://127.0.0.1:8000/v1/audio/transcriptions \
  -F "file=@recording.wav" \
  -F "model=FermionResearch/Phonon-1-Big"

The same weights run on a Mac (via MLX), on an NVIDIA GPU, or on a plain CPU; the runtimes and Docker images are in the GitHub repo.

License

Apache License 2.0 for the weights and the command line. Base model: Qwen/Qwen3-ASR-0.6B, Apache-2.0.