s

Symphony

sSymphony
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API price not publicprice
6.3Open ASR
—released

Ranking?

Full ranking →
1Hojo ASR v16.12Multilingual6.93ARK ASR 3B6.94Speech v3.17.15Qwen 3 ASR 1.7B Hf7.2
···
12Azure Speech 07 20267.513Symphony7.514Qwen 3 ASR 0.6B Hf7.6

Alternatives?

ModelScoreCostPriceWhat changes
HOpenHojo ASR v1+22%——EOpenARK ASR 3Bsame——OpenQwen 3 ASR 1.7B Hfsame——EOpenARK ASR 0.6Bsame——BOpenHiggs Audio v3 Sttsame——

Benchmarks

in Speech & Voice
Open ASR · average WER6.3#24
Open ASR · AMI Cleaned WER9#29
Open ASR · Earnings-22 Cleaned AA Chunked WER6#14
Open ASR · GigaSpeech Cleaned WER7.5#13
Open ASR · LibriSpeech Clean WER1#7
Open ASR · LibriSpeech Other WER2.2#9
Open ASR · SPGISpeech WER2.2#21
Open ASR · URGENT 2024 WER12.6#27
Open ASR · Voice Arena Monsoon WER3.6#16
Open ASR · VoxPopuli AA Cleaned WER3.3#24
Open ASR · URGENT 2024 Clean WER5.2#22
Open ASR · French FLEURS WER3.3#7
Open ASR · French MCV WER5.6#8
Open ASR · French MLS WER2.8#8
Open ASR · German FLEURS WER2.4#6
Open ASR · German MCV WER3#12
Open ASR · Spanish FLEURS WER2.5#11
Open ASR · Spanish MCV WER3.3#15
Open ASR · Spanish MLS WER3#11
Open ASR · Italian FLEURS WER1.7#9
Open ASR · Italian MCV WER3.1#11
Open ASR · Italian MLS WER6.3#20
Open ASR · Portuguese FLEURS WER3.3#9
Open ASR · Portuguese MLS WER5.6#15
Open ASR · Hindi Monsoon WER11.5#9
Open ASR · Dutch FLEURS WER4#9
Open ASR · Dutch MCV WER6.3#20
Open ASR · Dutch MLS WER8.8#24

FAQ

How much does Symphony cost?›

There is no per-unit API price: API price not public.

Is Symphony free to use?›

There is no free API.

How good is Symphony, and what is it best at?›

#24 of 61 in Speech to text.

Is Symphony better than Azure Speech 07 2026?›

On Open ASR · GigaSpeech Cleaned WER, Symphony scores 7.5 vs 7.5 — about the same.

Is Symphony open source?›

No, Symphony is a closed model available through an API. The closest open-weights option here is Hojo ASR v1.

What is Symphony?›

Symphony is a closed speech & voice model from sprag.

What are the best alternatives to Symphony?›

Hojo ASR v1 (open weights).