Best for
Best for developers building real-time speech-to-text, text-to-speech and voice agents through an API.
- Small and mid-sized
- Enterprise
No tools match
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AI Voice & Speech Comparison
At a glance
Best for
Best for developers building real-time speech-to-text, text-to-speech and voice agents through an API.
Best for
Best for teams localizing existing video into many languages with dubbing and lip sync.
Cataleo does not name a winner. Both statements come from the vendors themselves.
| Criterion | Deepgram | Rask AI |
|---|---|---|
| Starting price | Usage-based, pay-as-you-go No minimums and no expiry. Speech-to-text from $0.0048 / minute on Nova-3 monolingual streaming, text-to-speech from $0.0150 / 1,000 characters on Aura-1, and the Voice Agent API from $0.056 / minute. | Free trial; paid from $33 / month $33 is the annual rate for Creator ($396 per year); billed monthly the same plan is $60. Every plan caps the minutes of media it will process. |
| Free trial | $200 in free credits to start, no credit card required | Free trial with 3 minutes |
| Commercial use | Yes, usage-based | Not stated |
| Output | Speech-to-text, text-to-speech and voice agents | Translated and dubbed video and audio, with captions and subtitles |
| API | Yes | Yes, limited on Creator, production API with webhooks from Creator Pro, dedicated API on Business and Enterprise |
| Hosting | Cloud, or self-hosted for in-region and in-house data control | Not stated |
| Voice cloning | No, the catalogue is fixed: 40+ prebuilt Aura-2 voices across English, Spanish, Dutch, French, German, Italian and Japanese, with no cloning or custom-voice product on the price list | Yes, carries the original speaker's voice into the translated track, in 32 languages |
| Real-time use | Yes, real-time streaming speech-to-text and text-to-speech, plus batch processing | Not a live pipeline: media is uploaded and processed as a job, with multi-language batch processing from the Business plan |
| Languages | 45+ languages for speech-to-text, with automatic language detection | 130+ languages for translation and dubbing; voice cloning in 32 of them |
| Speech-to-speech and dubbing | No dubbing or translation product. Speech-to-speech runs as a pipeline through the Voice Agent API, which handles listening, thinking and speaking with configurable speech-to-text models, LLM providers and voices, plus function calling mid-conversation | Yes, dubbing of uploaded video and audio with automatic multi-speaker detection; lip sync from the Creator Pro plan |
| Editing and controls | Voice selection, plus encoding, bit rate, container and sample rate on the output, streamed audio and callbacks. Aura-2 is built to read naturally without SSML markup, and speed and style can be changed mid-conversation without restarting the session | Yes, browser editor with AI script adjustment, translation dictionary and translation prompting, SRT upload and download, automatic captions and timestamps |
| Consent and trust | SOC 2 Type 1 and 2, HIPAA, GDPR, CCPA and PCI compliant; self-hosting for in-house data control | The terms make it the customer's job to own the uploaded content or hold the rights to it, and to have all legally required consents for footage of an actor or actress; impersonation is prohibited. SOC 2 Type II and GDPR compliant, and content on free accounts is deleted three months after creation |
| MCP-ready | stated Yes | No |
| Deployment | more entries Cloud (SaaS), Browser-based, On-premise | Cloud (SaaS), Browser-based |
| Support | Community forum | more entries Email helpdesk, Community forum |
| Onboarding | Documentation and knowledge base | Documentation and knowledge base |
| Company size | Small and mid-sized, Enterprise | more entries Freelancers, Small and mid-sized, Enterprise |
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The short version
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The trade-offs
Deepgram
Strengths
Limitations
Rask AI
Strengths
Limitations
Plans
Deepgram
Rask AI
What users say
Deepgram
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Rask AI
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Where this comes from
Deepgram https://deepgram.com · checked against the official source on 2026-09-01
Rask AI https://www.rask.ai · no check date recorded yet
This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.