ASR with timestamps from commercial speech APIs
| System | Mean F1 |
|---|---|
| Google Chirp 2 | 0.486 |
| Google Chirp 3 | 0.452 |
| Qwen3-ASR-Flash | 0.363 |
| Mistral Voxtral Mini | 0.308 |
| ElevenLabs Scribe v2 | 0.281 |
Word timestamp F1 at 20 ms, mean of TIMIT core test and Buckeye test, each clean and with reverb, noise, music and babble added. Higher is better.
Olewave makes FA-Bench. It scores every system with the same public code against the same human annotations. Olign, also from Olewave, no longer takes part in the benchmark.
Forced alignment and ASR timestamps on your own recording.
Up to 30 seconds of English speech. No account needed.
We proudly offer
Large-Scale Pre-Labeled Speech Datasets
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No SaaS Vendor Lock-In.
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Superior STT/TTS with higher quality & faster inference than open-source or cloud APIs
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Tailored to your use case, tuned to your domain, languages, and workflows
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You own the code, with 100% IP rights on all customization
Avant-Garde Voice AI Consulting Services
Experienced in Assisting Clients,
Located in San Francisco
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Market & technology evaluation covering the competitive landscape and build-vs-buy
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Strategic business planning for roadmap, staffing and go-to-market
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Strict non-disclosure, with an NDA on every engagement