Phonon 2 measured on 12 of 80 Speech to text benchmarks12
BenchmarkByScoreRank
No benchmark matches
self-host onlyprice
7.2Open ASR
Sep 2026released
enLanguages
Alternatives?
ModelScoreCostPriceWhat changes
COpenCohere Transcribe 03 2026same——
OpenGranite Speech 4.1 2Bsame——EOpenARK ASR 3Bsame——OpenGranite Speech 4.1 2B Narsame——BOpenHiggs Audio v3 Sttsame——ModelScoreCostPriceWhat changes
Nothing here yet.
ModelScoreCostPriceWhat changes
Nothing here yet.
ModelScoreCostPriceWhat changes
CCohere Transcribe 03 2026Opensame——Granite Speech 4.1 2BOpensame——EARK ASR 3BOpensame——Granite Speech 4.1 2B NarOpensame——BHiggs Audio v3 SttOpensame——ModelScoreCostPriceWhat changes
FPhonon 2.5Openn/a——Languages: not verifiedFPhonon-2.5 EnglishOpenn/a——Languages: not verifiedAll FermionResearch models →Run it yourself
Fits onhardware needs not verified yet
LicenceCC BY 4.0free for commercial use
Benchmarks
in Speech & VoiceOpen ASR · average WER7.2#40
Open ASR · RTFx1,976.5#11
Open ASR · URGENT 2024 WER14.9#41
FAQ
How much does Phonon 2 cost?›
There is no per-unit API price: self-host only.
Is Phonon 2 free to use?›
There is no free API. The weights are open, so you can run it yourself.
How good is Phonon 2, and what is it best at?›
#40 of 61 in Speech to text.
Is Phonon 2 better than Qwen 3 ASR 0.6B Hf?›
On Open ASR · LibriSpeech Clean WER, Phonon 2 scores 1.7 vs 1.7 — about the same.
When was Phonon 2 released? Is there a newer version?›
Released 2026-09-28. It is the current version in its line.
Is Phonon 2 open source?›
Yes, the weights are open (cc-by-4.0 licence).
Can I run Phonon 2 locally?›
The weights are open and can be self-hosted; hardware needs are not confirmed yet.
What is Phonon 2?›
Phonon 2 is an open-weights speech & voice model from FermionResearch, released Sep 2026.
What are the best alternatives to Phonon 2?›
Cohere Transcribe 03 2026 (open weights).