Convex vs Firebase (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.
Side-by-side comparison
| Criterion | Convex | Firebase |
|---|---|---|
| Score | 84/100 | 77/100 |
| Free tier | Yes: Free plan with hard resource caps | Yes: Spark plan with no-cost quotas (e.g. Firestore 1 GiB, 50K reads/day) |
| Open source | Yes | No |
| Pricing | Professional $25/developer/mo; Starter $0 base plus pay-as-you-go | Blaze: pay as you go above free quotas |
| Best for | TypeScript apps that need realtime data with minimal backend code | Mobile and realtime apps that want a Google-managed backend |
| Category | Databases & backends | Databases & backends |
Score breakdown
| Criterion | Convex | Firebase |
|---|---|---|
| Fit for the use case /25 | 22 | 20 |
| Vibe-coder friendliness /15 | 13 | 13 |
| Output quality & reliability /15 | 13 | 13 |
| Pricing & free tier /15 | 12 | 12 |
| Ecosystem & integrations /10 | 8 | 9 |
| Momentum /10 | 8 | 7 |
| Code ownership & lock-in /10 | 8 | 3 |
Based on desk research of official pricing pages and docs; see methodology.
Who wins: Convex or Firebase?
By score, Convex wins Convex vs Firebase at 84/100 vs 77/100. Convex: Very agent-friendly (everything is TypeScript), realtime by default, self-hostable. FSL is source-available rather than OSI open source at first. Firebase: Mature, generous free tier, strong for mobile. Proprietary NoSQL creates lock-in. Convex is best for TypeScript apps that need realtime data with minimal backend code. Firebase is best for Mobile and realtime apps that want a Google-managed backend.
FAQ
- Which is better, Convex or Firebase?
- By our score, Convex (84/100) ranks above Firebase (77/100). Convex is best for TypeScript apps that need realtime data with minimal backend code. The right pick still depends on your workflow; see the side-by-side table.
- What is the Convex vs Firebase score?
- Convex scores 84/100 and Firebase scores 77/100 on PromptToProd's evidence-based ranking. Scores are never for sale.