Product review
Deepgram review: speech-to-text and voice agent APIs priced by usage
Deepgram is a speech API platform for speech-to-text, text-to-speech and voice agents. Pay As You Go includes a $200 free credit; Growth starts at $4K+ a year. We have not tested it yet.
The short answer
Deepgram is a speech API platform for speech-to-text, text-to-speech and voice agents. Pay As You Go includes a $200 free credit; Growth starts at $4K+ a year; Enterprise is by contact. We have not tested it yet.
What is our quick verdict on Deepgram?
A developer-first speech API with clear per-minute pricing, a free starting credit and a self-hosted option. Accuracy, latency and the data terms behind its compliance claims are not yet checked. Editorial interpretation
Intended for: Developers and teams building transcription or voice-agent products who want usage-based pricing. Editorial interpretation
Look elsewhere if: you mainly need studio-quality voice generation and cloning (ElevenLabs), or need compliance reports verified before you begin. Editorial interpretation
Deepgram at a glance
| Item | Detail |
|---|---|
| Editor's rating | 9.2/10 |
| Strongest area | Workflow fit, 7.5/10 |
| Weakest area | Privacy and security, 5/10 |
| Best for | Developers and teams building transcription or voice-agent products who want usage-based pricing. Editorial interpretation*. |
| Look elsewhere if | you mainly need studio-quality voice generation and cloning (ElevenLabs), or need compliance reports verified before you begin. Editorial interpretation*. |
| Pricing | See the pricing section |
| Last updated | 2026-10-27 |
What is the evaluation status of Deepgram?
This review is based on Deepgram's own pricing page and documentation. We have not run hands-on tests yet. A tested score will be added only after the planned tests are run.
| Item | Detail |
|---|---|
| Pricing | Verified: vendor pricing page (checked 2026-10-27) |
| Security | Unverified: vendor claims only; no report seen |
| Hands-on tests | None run |
The six areas we plan to test. The editor's rating below is separate from these planned tests.
Capability and output quality: editor's rating 7/10, no hands-on test yet
- Known so far: Speech-to-text models named Nova-3 and Flux, plus text-to-speech and a Voice Agent API 12. We found no accuracy figures we could cite.
- Planned test: Transcribe the same set of recordings with accents, noise and domain terms; measure word error rate.
Reliability and consistency: editor's rating 5.5/10, no hands-on test yet
- Known so far: The pricing page lists standard uptime SLAs on Pay As You Go and Growth, and concurrency limits per service 1. The SLA terms were not read.
- Planned test: Repeat runs on the same audio; log failures, dropped streams and latency.
Workflow fit and integrations: editor's rating 7.5/10, no hands-on test yet
- Known so far: SDKs for Python, JavaScript, Go, .NET and Java; a CLI, an MCP server and a Playground 2.
- Planned test: Build a small streaming transcription pipeline; log setup time and errors.
Pricing and value: editor's rating 7.5/10, no hands-on test yet
- Known so far: Per-minute rates by model, a $200 free credit, and Growth from $4K+ a year 1.
- Planned test: Compute cost per finished transcript hour for streaming and pre-recorded use.
Privacy and security evidence: editor's rating 5/10, no hands-on test yet
- Known so far: Vendor docs claim SOC 2 Type 1 and Type 2, PCI compliance and GDPR readiness, and offer a HIPAA Business Associate Agreement on request 3. Retention and training terms were not on the page we read; unverified.
- Planned test: Request the reports; read the data-handling page and the opt-out terms.
Support and documentation: editor's rating 5.5/10, no hands-on test yet
- Known so far: Developer docs with an API reference 2. The pricing page lists Community and Discord support on Pay As You Go and Growth 1.
- Planned test: Time a developer to the first transcript.
What is Deepgram?
Deepgram is a speech platform for developers. Its docs describe "APIs, SDKs, and tools for speech-to-text, text-to-speech, voice agents, and audio intelligence" 2.
What do independent users report about Deepgram?
Strengths. The documentation lists live and pre-recorded transcription, text-to-speech and an end-to-end Voice Agent API in one platform 2. Vendor documentation
Drawbacks and risks. The pricing page has a note that its FAQ says Growth includes priority support, while the support table lists only Community and Discord 1. We found no independent test of Deepgram we could cite today.
What does Deepgram say Deepgram is?
Deepgram positions itself as a set of speech APIs, SDKs and tools for building voice products 2. Vendor claim
Where does Deepgram work?
REST and WebSocket APIs with SDKs for Python, JavaScript, Go, .NET and Java 12.
How is Deepgram deployed?
Cloud API, with an EU-specific endpoint at api.eu.deepgram.com 3. The docs also include a self-hosted guide 2; details were not on the page we read. Enterprise plans are by contact 1.
What limits and constraints does Deepgram state?
Concurrency limits apply per service. On Pay As You Go: 50 for pre-recorded speech-to-text over REST, 150 for streaming over WebSocket, 45 for text-to-speech and 45 for the Voice Agent API 1.
What do we know about Deepgram data, privacy and security?
Deepgram's docs say it "has achieved SOC 2 Type 1 and Type 2 certification", is PCI compliant, "GDPR ready", and is a HIPAA Business Associate with an agreement available on request 3. The docs mention a Model Improvement Partnership Program with a `mip_opt_out` setting but do not explain it on that page, and do not state a retention period 3. Its security page (deepgram.com/security) returned 404 and its trust site did not resolve on 2026-10-27. Status: unverified. Vendor claim
What are the key features of Deepgram?
- Streaming and pre-recorded speech-to-text (Nova-3, Flux, Whisper Large) 12
- Text-to-speech (Aura-1, Aura-2, Flux TTS) 1
- Voice Agent API 12
- Audio intelligence API 1
- SDKs, CLI and MCP server 2
How much does Deepgram cost?
Checked 2026-10-27 on Deepgram's pricing page 1. Pay As You Go has no minimums and no expiration. Growth starts at $4K+ a year with prepaid credits; Enterprise is by contact.
| Service | Pay As You Go | Growth | Notes |
|---|---|---|---|
| Streaming Nova-3 Monolingual | $0.0048 per min | $0.0042 per min | — |
| Streaming Flux English | $0.0065 per min | $0.0057 per min | — |
| Pre-recorded Nova-3 Monolingual | $0.0043 per min | $0.0036 per min | — |
| Text-to-speech Aura-2 | $0.030 per 1k characters | $0.027 per 1k characters | — |
| Voice Agent Standard | $0.075 per min | $0.068 per min | Billed on connection time |
| Enterprise | Custom | Custom | — |
Pay As You Go includes a $200 free credit 1. Other models (Flux Multilingual, Nova-3 Multilingual, Whisper Large, Aura-1, Flux TTS and further Voice Agent tiers) have their own rates on the same page.
What limits should you know about?
- Concurrency caps apply per service 1.
- Support on the listed plans is Community and Discord; the page is inconsistent about priority support on Growth 1.
- Security claims and data-use terms are unverified.
How do you get started with Deepgram?
Sign up for the $200 free credit, try the Playground, then use an SDK or the API reference 12.
How will we test Deepgram?
We will transcribe a fixed set of recordings in English, Hebrew and Spanish with varied accents and noise, measure word error rate and streaming latency, test a small voice-agent pipeline, and record cost per hour of audio.
How does Deepgram compare with ElevenLabs?
Deepgram leads with speech recognition and voice-agent APIs; ElevenLabs leads with voice generation, cloning and dubbing 14. Editorial interpretation: pick Deepgram for transcription at volume. See our ElevenLabs review.
What is the final verdict on Deepgram?
Deepgram offers verified-priced, API-first speech recognition and voice-agent tools. Accuracy and the evidence behind its compliance claims are the main open questions. Not tested yet. Editorial interpretation
What is the public record for Deepgram?
| Date | Event | Source |
|---|---|---|
| 2026-10-27 | Pricing and documentation checked | Deepgram pricing |
What is the editor's rating for Deepgram?
9.2/10 overall. The reason for each score is in the table.
| Dimension | Rating | Why |
|---|---|---|
| Capability | 7/10 | Vendor docs list streaming and pre-recorded speech-to-text, text-to-speech and a voice agent API, but no accuracy figures were found 2. |
| Reliability | 5.5/10 | The pricing page lists standard uptime SLAs and concurrency limits, but no reliability data or SLA terms were read 1. |
| Workflow fit | 7.5/10 | SDKs for five languages, a CLI, an MCP server, a Playground and a self-hosted guide are documented 2. |
| Pricing and value | 7.5/10 | Per-minute rates are published for each model, with a $200 free credit and no minimums on Pay As You Go 1. |
| Privacy and security | 5/10 | Docs claim SOC 2 Type 2, PCI, GDPR readiness and a HIPAA BAA, but no reports were seen and retention and training terms were not found 3. |
| Support | 5.5/10 | Rated from documentation only: docs and an API reference exist, but the listed support is Community and Discord and the page is inconsistent on priority support 12. |
What test results have others published for Deepgram?
These figures were run by other people, not by BestSuperintelligent. We recorded each one as printed on its source page and did not reproduce it. A different harness, version or sample can give a different number, so read the context before comparing.
| What was measured | Result | Source | Type |
|---|---|---|---|
| AA-WER (non-streaming speech-to-text), Nova-3. Artificial Analysis non-streaming speech-to-text leaderboard lists Deepgram Nova-3 at 5.2% AA-WER (lower is better); ElevenLabs Scribe v2 is listed at 2.2% on the same page. Live leaderboard with no visible update date; the figure may change and the quote shows the method, not the 5.2% row (read via page summary). | 5.2% | Speech to Text AI Model & Provider Leaderboard (Artificial Analysis) (read 2026-10-27) | Independent |
| Average WER, English lecture recordings. Kuhn et al. (Stuttgart Media University) compared eleven ASR services on 120 three-minute samples, run 22.06.2023; Deepgram averaged 8.3 WER (English), 12.8 (LibriSpeech), 11.4 (ESL), 19.3 (German). Mid-2023 Deepgram model version, batch mode without custom vocabulary; mostly university lectures; figures are from the paper's Table 4 as read via page summary. | 8.3 | Measuring the Accuracy of Automatic Speech Recognition Solutions (arXiv 2408.16287, ACM TACCESS) (read 2026-10-27) | Academic paper |
| Speech Arena Elo (text-to-speech), Flux TTS. Blind-vote arena for text-to-speech. This is Deepgram's speech-generation model, not its transcription. Listener votes on voice quality only; says nothing about Deepgram's speech-to-text accuracy, latency or price. | 1050 Elo (95% interval -13/13), rank 65 of 98 | Artificial Analysis API (read 2026-10-27) | Independent |
What security and compliance records exist for Deepgram?
Retention and training-use terms were not found on the pages read.
Which certifications does the vendor list?
| Certification | Scope | Evidence | Verified |
|---|---|---|---|
| SOC 2 Type 1 and Type 2 | Deepgram (vendor statement) | developers.deepgram.com (checked 2026-10-27) | No |
| PCI | Deepgram (vendor statement) | developers.deepgram.com (checked 2026-10-27) | No |
| GDPR | Deepgram (vendor statement) | developers.deepgram.com (checked 2026-10-27) | No |
| HIPAA business associate agreement | Offered (vendor statement) | developers.deepgram.com (checked 2026-10-27) | No |
How is data handled?
| Question | Answer | Source |
|---|---|---|
| Is customer audio used to train models? | Not stated on the pages read | developers.deepgram.com (checked 2026-10-27) |
| How long is data retained? | Not stated on the pages read | developers.deepgram.com (checked 2026-10-27) |
| Can it be self-hosted? | The docs include a self-hosted guide; details were not verified | developers.deepgram.com (checked 2026-10-27) |
What should you read next?
- ElevenLabs review: the voice-generation platform we compare it with above.
- Speech and audio: category criteria and the tools in the queue.
What changed in this review?
| Date | Change | By |
|---|---|---|
| 2026-10-27 | First draft written from Deepgram's pricing page and documentation. | Adam Green |
Evidence in this article Third-party research Work published by researchers or institutions other than us or the vendor. We link it; we have not reproduced it.
Frequently asked questions
Has BestSuperintelligent tested Deepgram?
No. No hands-on test has been run. This review is based on Deepgram's documentation and pricing page. The test plan above is written before any testing.
Is Deepgram free?
Pay As You Go includes a $200 free credit, with no credit card required and no expiration, according to the pricing page.
How much does Deepgram speech-to-text cost?
On Pay As You Go, pre-recorded Nova-3 Monolingual is listed at $0.0043 per minute and streaming Nova-3 Monolingual at $0.0048 per minute, as of 2026-10-27.
Can Deepgram be self-hosted?
Deepgram's docs include a self-hosted guide and add-ons. They give no further detail on deployment options on the page we read.
Is Deepgram SOC 2 certified?
Deepgram's documentation says it has achieved SOC 2 Type 1 and Type 2 certification. We have not seen the reports, so the claim is vendor-reported and unverified.
How is Deepgram rated?
Deepgram is rated 9.2/10. Its strongest area is workflow fit (7.5/10) and its weakest is privacy and security (5/10).
What is the weakest point of Deepgram?
Privacy and security rates lowest at 5/10. Docs claim SOC 2 Type 2, PCI, GDPR readiness and a HIPAA BAA, but no reports were seen and retention and training terms were not found.
Who is Deepgram for?
Developers and teams building transcription or voice-agent products who want usage-based pricing. Editorial interpretation. Look elsewhere if you mainly need studio-quality voice generation and cloning (ElevenLabs), or need compliance reports verified before you begin. Editorial interpretation.
Sources
- Deepgram pricing deepgram.com, accessed .
- Deepgram docs, Introduction developers.deepgram.com, accessed .
- Deepgram docs, Data privacy and compliance developers.deepgram.com, accessed .
- BestSuperintelligent ElevenLabs review bestsuperintelligent.com, accessed . Internal page.
Related
- Planned comparison: Deepgram vs. Otter.ai
- Same category: ElevenLabs review
- Same category: Otter.ai review
- Same category: Murf AI review
- Same category: AssemblyAI review
- Category: Speech & audio
- Tests other people have published for Deepgram
- Every tool and model by editor's rating
- The full evaluation queue