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Deepgram
Real-time voice APIs for speech-to-text, text-to-speech, and voice agents, available as cloud APIs or self-hosted.
Product teams building production voice agents or transcription that need a specialist speech API.
Buyers that want studio avatar video or a consumer voice-cloning app.
Co-founded by Scott Stephenson.
Verdict
Deepgram is a great fit for product teams that need production speech, including transcription, TTS, or voice agents, as a cloud API or self-hosted stack. Usage pricing is competitive for speech APIs when you measure on your own audio. Teams shipping voice surfaces tend to rate the specialist stack highly; it is at the serious end of speech infra, not a toy demo.
Score Breakdown
How Deepgram scores in the categories that matter to its buyers.
Pricing
Deepgram sells usage-based speech APIs with a free credit on Pay As You Go and prepaid Growth credits from $4,000 per year. Representative rates below are USD from Deepgram’s public rate card as of September 2026.
| Plan / product | Pay As You Go | Growth | What stands out |
|---|---|---|---|
| Account | $200 free credit, then usage | $4,000+ / yr prepaid | Growth saves up to about 20% vs PAYG |
| Nova-3 STT (streaming) | $0.0048 / min | $0.0042 / min | Promotional streaming rate published on the card |
| Nova-3 STT (pre-recorded) | $0.0043 / min | $0.0036 / min | Monolingual list rates |
| Aura-2 TTS | $0.030 / 1k chars | $0.027 / 1k chars | Flux TTS is $0.045 / 1k chars on PAYG |
| Voice Agent (Standard) | $0.075 / min | $0.068 / min | Billed on WebSocket connection time |
| Enterprise | Sales quote | Sales quote | Volume, deployment, BAA, and support packages |
The Field at a Glance
How Deepgram compares with other Voice, speech & multimodal pipelines vendors we reviewed, by Overall Score and relative typical engagement cost.
Deepgram scores 8.0 in Voice, speech & multimodal pipelines, ahead of AssemblyAI (7.9), Gladia (7.9), Rime (7.9), and ElevenLabs (7.8). Relative cost lands mid-band for this subcategory.
Use-case matrix
| Use case | Fit | Notes |
|---|---|---|
| Production speech-to-text | Strong | A core API. |
| Voice agents | Strong | A published Voice Agent API. |
| Self-hosted speech | Strong | Sold beside the cloud API. |
| Avatar video production | Weak | A different creative tool. |
Review Excerpts
Below are excerpts from public reviews. Paid reviews and pay-for-play sites such as Clutch were excluded.
“The fast transcription rates significantly improve time management by transcribing hours of audio in seconds. Deepgram's API is straightforward to integrate, and the quality of transcriptions is greatly enhanced.”
“Sometimes the multi-language support doesn't work perfectly. When calling customers who speak Indonesian or Dubai dialects, it doesn't detect their language well.”
“We use this exact stack at work (OpenAI, ElevenLabs, Deepgram) for some exploratory use cases. The key issue we have now is latency with the LLM. Deepgram and Elevanlabs work brilliantly!”
“The Deepgram worked brilliantly well with transcription across the entire studio, even for un-microphoned guest participants.”
“Problem with this is Deepgram's accuracy (but agree their speed/latency is excellent). We used to use them too, but eventually we got so frustrated with poor accuracy we switched to Speechmatics - would definitely recommend checking them out.”
“The solution's most valuable feature is its speed of transcription, as it is one of the fastest tools, especially if you compare it to the second fastest solution that you can get, which is 20 times faster, so it is not just a marginally faster product.”
Company Facts
- Founded
- 2015 (Y Combinator)
- Headquarters
- San Francisco (Y Combinator)
- Employees
- About 115 (Y Combinator)
- Accelerator
- Y Combinator, Winter 2016 batch (Y Combinator)
- Website
- deepgram.com
Key Leadership
Scott Stephenson
Co-founder and CEO
Methodology
This page is an independent evaluation of Deepgram for buyers comparing options in voice, speech & multimodal pipelines. AI Industry Reviews accepts no sponsorships, advertising, or pay-for-placement fees. Deepgram did not pay for this review.
What we scored
The headline number is an Overall Score on a 0-10 scale. Eight criteria fall under it in two groups.
- Buyer outcomes (for voice, speech & multimodal pipelines)
- Speech-to-text and text-to-speech
- Voice agent API
- Cloud and self-hosted options
- Production speech fit
- Company & commercial
- Innovation & product leadership
- Project management & communication
- Pricing
- Contract fairness
Pricing measures whether the price looks fair for the value delivered, including packaging and renewal friction that show up in real buying cycles.
Score Composition
| Input | Weight | What it covers |
|---|---|---|
| Reviews | 40% | A proprietary read of what practitioners say about likes, complaints, and day-to-day use, including public review sites, forums, and private chat rooms. Paid reviews and pay-for-play sites such as Clutch are out of scope. |
| Product | 35% | Hands-on look at screens and workflows. |
| Pricing | 15% | Whether the price looks fair for what you get. |
| Docs & training | 10% | Docs, tutorials, and training material. |
How we balanced the evidence
The Overall Score is the simple average of the eight criteria. Recommendation language follows that score and the fit pattern described above.
Scope
Deepgram is graded here as voice, speech & multimodal pipelines. Criteria scores can move as more review volume and product checks are added.