Head-to-head comparison
Gladia vs Vosk
Two of the transcription tools podcasters reach for. Here's how they differ on pricing, features, audience, and the trade-offs that actually matter day-to-day.
Multilingual Whisper-powered API with sub-300ms streaming.
Best for: Voice product developers
Open-source offline speech recognition
Best for: Developers building offline or embedded apps who need an open-source ASR with mature bindings.
At a glance
The honest trade-offs
Gladia
Pros
- Sub-300ms real-time latency
- 100+ languages with code-switching
- Free 10 hours/month evaluation
Watch-outs
- API-only, no editor for end users
- Higher async rate than raw Whisper
- Volume tiers need annual commits
Vosk
Pros
- Truly offline with small model footprints
- Bindings for every major language and platform
- Permissive Apache 2.0 licence
Watch-outs
- WER higher than Whisper
- Slower release cadence
- Smaller language list than Whisper
Which one should you pick?
Pick Gladia if
You’re building around voice product developers. Gladia took Whisper and re-engineered it to work in production — sub-300ms streaming latency, code-switching across 100+ languages, diarization and translation in the same stream. For developers building voice products it's a serious Whisper-API upgrade.
Pick Vosk if
You’re building around developers building offline or embedded apps who need an open-source asr with mature bindings.. Vosk is a long-standing open-source toolkit built on Kaldi, with bindings for Python, Node, Android, iOS, and even Raspberry Pi. Accuracy lags Whisper but the small models run on devices with under 100MB of RAM.
Also worth comparing
Or see all Gladia alternatives.
Frequently asked
What does Gladia do better than Vosk?
Gladia's standout is "Sub-300ms real-time latency". Vosk doesn't make that promise — it leans into "Truly offline with small model footprints" instead. If the first sentence describes your workflow, pick Gladia; if the second does, pick Vosk.
What are the trade-offs?
Gladia: api-only, no editor for end users. Vosk: wer higher than whisper. Whether either matters depends entirely on what you actually need — neither is a deal-breaker by itself.
Can I use Gladia and Vosk together?
Both are transcription tools so most teams pick one. Some workflows do combine them — for example, using Gladia for one show or episode type and Vosk for another. Worth trying both free tiers before committing.