Supabase vs MongoDB Atlas (2026)
Head-to-head comparison for vibe coders: scores, free tiers, pricing and best-for, using the same evidence-based methodology. Rankings are never for sale.
Open-source Postgres development platform
Managed MongoDB document database on AWS, Google Cloud and Azure
Side-by-side comparison
| Criterion | Supabase | MongoDB Atlas |
|---|---|---|
| Score | 93/100 | 76/100 |
| Free tier | Yes: 2 projects, 500 MB DB, 50K MAU, 1 GB storage (pauses after 1 week idle) | Yes: M0 free forever, 512 MB storage, up to 100 ops/sec (no backups) |
| Open source | Yes | No |
| Pricing | Pro from $25/mo per org (includes $10 compute credit) | Flex $0.011/hr, about $8–$30/mo depending on ops/sec; Dedicated from $0.08/hr (M10, from ~$56.94/mo) |
| Best for | Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations) | Apps with flexible, nested JSON data or that need vector search next to app data |
| Category | Databases & backends | Databases & backends |
Score breakdown
| Criterion | Supabase | MongoDB Atlas |
|---|---|---|
| Fit for the use case /25 | 24 | 18 |
| Vibe-coder friendliness /15 | 14 | 10 |
| Output quality & reliability /15 | 13 | 14 |
| Pricing & free tier /15 | 13 | 11 |
| Ecosystem & integrations /10 | 10 | 10 |
| Momentum /10 | 10 | 7 |
| Code ownership & lock-in /10 | 9 | 6 |
Based on desk research of official pricing pages and docs; see methodology.
Who wins: Supabase or MongoDB Atlas?
By score, Supabase wins Supabase vs MongoDB Atlas at 93/100 vs 76/100. Supabase: The best fit for AI builders: Postgres, auth and storage in one, a generous free tier, open source and deep builder integrations. MongoDB Atlas: A mature, widely used database with a free-forever tier and built-in vector search. Less natural for AI app builders, which mostly default to Postgres, and the free cluster is small (512 MB, no backups). Paid dedicated clusters get expensive fast; SSPL license. Supabase is best for Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations). MongoDB Atlas is best for Apps with flexible, nested JSON data or that need vector search next to app data.
FAQ
- Which is better, Supabase or MongoDB Atlas?
- By our score, Supabase (93/100) ranks above MongoDB Atlas (76/100). Supabase is best for Default backend for vibe-coded apps (Lovable, Bolt, v0 integrations). The right pick still depends on your workflow; see the side-by-side table.
- What is the Supabase vs MongoDB Atlas score?
- Supabase scores 93/100 and MongoDB Atlas scores 76/100 on PromptToProd's evidence-based ranking. Scores are never for sale.