Deepgram
Supabase
| Feature | Deepgram | Supabase |
|---|---|---|
| Pricing | Free / from $0.0036/mo | Free / from $25/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.7 / 5 |
| Best For | developers, contact-centers, voice-ai-apps, real-time-applications | developers, startups, indie-hackers, full-stack-teams |
| Founded | 2015 | 2020 |
| Speech To Text | ✓ | ✗ |
| Text To Speech | ✓ | ✗ |
| Real Time Streaming | ✓ | ✗ |
| Language Detection | ✓ | ✗ |
| Topic Detection | ✓ | ✗ |
| Custom Vocabulary | ✓ | ✗ |
| Smart Formatting | ✓ | ✗ |
| Postgres Database | ✗ | ✓ |
| Authentication | ✗ | ✓ |
| Edge Functions | ✗ | ✓ |
| Real Time | ✗ | ✓ |
| Storage | ✗ | ✓ |
| Vector Embeddings | ✗ | ✓ |
| Self Hosting | ✗ | ✓ |
✓ Deepgram Pros
- Extremely fast transcription (up to 40x real-time)
- Competitive accuracy with custom models
- Both STT and TTS in one platform
- Free $200 credit to start
✗ Deepgram Cons
- Developer-focused with no consumer app
- Custom model training requires enterprise plan
- Newer platform with less ecosystem maturity
✓ Supabase Pros
- Full Postgres with SQL access
- Generous free tier (500MB, 50K monthly active users)
- Auth, storage, and edge functions included
- Open-source and self-hostable
✗ Supabase Cons
- Can be complex for non-developers
- Pauses inactive free projects after 7 days
- Real-time can be expensive at scale
The Verdict
Deepgram is built for developers and contact centers, with a focus on speech-to-text and text-to-speech. Supabase targets developers and startups and leads with postgres-database and authentication.
On pricing, Deepgram is the clear winner for budget-conscious users — starting at $0.0036/mo compared to $25/mo for Supabase. That $24.9964/mo difference adds up quickly for growing teams.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Both tools are a solid fit for developers — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
Bottom line: Supabase has a slight overall edge — but if extremely fast transcription (up to 40x real-time) matters most to you, Deepgram may still be the right call.