Gladia vs Vosk
Gladia
gladia.ioVosk
alphacephei.comSide by side
| Figure | Gladia | Vosk |
|---|---|---|
| Price from | $0.20/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 7 | 1 |
| Spec score · Speech Recognition Software | 8.9 (#4) | 8.0 (#22) |
| Spec score · Transcription Software | 8.9 (#6) | 7.9 (#31) |
| Spec score · Speech-to-Text Software | 8.9 (#6) | 8.0 (#22) |
| Spec score · AI transcription tools | 8.8 (#11) | 8.4 (#15) |
| API access | Yes | Yes |
| Export formats | SRT,VTT | TXT,SRT |
| Integrations | The site names Pipecat, LiveKit, Twilio, and Retell integrations, plus Zapier, Make, and n8n connectors. | The integrations page lists Asterisk, FreeSWITCH, Jigasi, and UniMRCP integrations. |
| Languages | The Starter plan includes automatic language detection and switching and supports 100+ languages. | The toolkit supports more than 20 languages and dialects. |
| Product | Gladia provides audio infrastructure to record, transcribe, and enrich audio through an API. | Vosk is a speech recognition toolkit for offline speech recognition. |
| Speaker identification | Yes | Yes |
| Support | Starter and Growth include help center and Discord support; Enterprise includes premium support with dedicated Slack and an account manager. | The project directs users to GitHub issues, email, Telegram, and an invitation-only WeChat group for questions. |
| Timestamp support | Yes | Yes |
Plans
Gladia
- Starter - asynchronous$0.61 a month
- Starter - real-time$0.75 a month
- Growth - asynchronous$0.20 a month
- Growth - real-time$0.25 a month
- StarterFree
- EnterprisePrice not published
- GrowthPriced on request
In their own words
Gladia
Gladia provides audio infrastructure through an API for recording, transcribing, and enriching audio. It offers asynchronous and real-time transcription, including live streaming, with Starter supporting 100+ languages and automatic language detection and switching. Listed audio tools include speaker diarization, sentiment analysis, PII redaction, entity detection, and audio-to-LLM processing. Developers can use Python or Node.js SDKs, WebSocket streaming, or REST uploads; named integrations include Pipecat, LiveKit, Twilio, Retell, Zapier, Make, and n8n. Transcripts can include speaker labels and timestamps, and SRT and VTT are listed export formats. Starter is listed at free and includes 50€ in one-time credits that do not expire. Flexible pay-as-you-go Starter rates are $0.61 a month for asynchronous transcription and $0.75 a month for real-time transcription. Hourly call and total audio limits vary by tier. Gladia also offers GladiaFlow, a desktop voice dictation app for Mac and Windows; its code is available under the MIT license.
Vosk
Vosk is an open-source toolkit for speech recognition that works offline, including on devices such as Raspberry Pi, Android, and iOS. It supports more than 20 languages and dialects and includes a streaming API. Developers can reconfigure vocabulary; most small models support dynamic changes. Small models are typically around 50 MB and need about 300 MB of runtime memory, while large server models can require up to 16 GB. Language bindings include Python, Java, C#, and JavaScript, among others. Vosk Server has implementations for WebSocket, gRPC, MQTT, and WebRTC, and listed integrations include Asterisk, FreeSWITCH, Jigasi, and UniMRCP. The server can be installed with Docker and configured to use a locally mounted model folder. Listed systems include Linux x86_64 and arm64, Raspberry Pi 3/4, macOS x86 and M1, and Windows x86 and 64 for the Python package. ARMv6 and Windows ARM64 are unsupported; iOS builds are available on request. The API repository lists an Apache-2.0 license.