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Bun vs Convex — Which One Wins?
A detailed, side-by-side comparison of Bun and Convex to help you pick the right tool for your workflow.
TLDR
Quick Verdict
Bun takes the lead with a 4.5 rating and is best for javascript developers wanting dramatically faster tooling. Convex (4.4) is the better pick if you need developers building real-time apps who want a full backend solution.
Side-by-Side Comparison
| Criteria | Bun | Convex |
|---|---|---|
| Rating | ★★★★★ 4.5(88) | ★★★★ 4.4(33) |
| Pricing Model | open-source | freemium |
| Starter Price | N/A | $25/mo |
| Free Tier | Yes | Yes |
| Platforms | mac, linux, windows | web, cli |
| Learning Curve | easy | medium |
| API Available | No | Yes |
| Best For | JavaScript developers wanting dramatically faster tooling | Developers building real-time apps who want a full backend solution |
| Verdict | recommended | recommended |
Feature Checklist
| Feature | Bun | Convex |
|---|---|---|
| JavaScript runtime | — | |
| Package manager | — | |
| Bundler | — | |
| Test runner | — | |
| Node.js compatible | — | |
| Real-time sync | — | |
| Server functions | — | |
| File storage | — | |
| Scheduled jobs | — | |
| Full TypeScript | — |
Bun
Pros
- ✓10-100x faster than Node for many operations
- ✓Replaces multiple tools
- ✓Drop-in Node.js replacement for most code
Cons
- ✕Not 100% Node.js compatible yet
- ✕Windows support is newer
- ✕Some npm packages may not work
Convex
Pros
- ✓Real-time sync just works
- ✓Excellent TypeScript DX
- ✓Eliminates backend boilerplate
Cons
- ✕Vendor lock-in is real
- ✕Non-standard data model
- ✕Smaller community than Firebase
The Bottom Line
Both Bun and Convex are solid tools in the Developer Tools space. Bun edges ahead with a stronger overall rating (4.5 vs 4.4) and is the better choice for javascript developers wanting dramatically faster tooling. However, if you prioritize developers building real-time apps who want a full backend solution, Convex is worth serious consideration. We recommend trying the free tier or trial of each before committing.
Frequently Asked Questions
Is Bun better than Convex?▼
Bun scores higher overall with a 4.5 rating vs 4.4. However, the best choice depends on your specific needs. Bun is best for JavaScript developers wanting dramatically faster tooling, while Convex is best for Developers building real-time apps who want a full backend solution.
Can I switch from Bun to Convex?▼
Yes, most users can migrate between the two. Convex offers a free tier to test before committing.
Which is more affordable, Bun or Convex?▼
Bun starts at contact for pricing, while Convex starts at $25/mo. Bun offers a free tier. Convex offers a free tier.