A detailed comparison of Deno and Bun to help you choose the right tool for your needs.
Modern JavaScript and TypeScript runtime with built-in security.
| Plan | Deno | Bun |
|---|---|---|
| Free Tier | ✓ Open source + Deno Deploy free | ✓ Fully open source |
| Lowest Paid | $20/mo (Deploy Pro) | Free |
| Enterprise | Custom pricing | Free |
| Feature | Deno | Bun |
|---|---|---|
| TypeScript Built-in | ✓ | — |
| Secure by Default | ✓ | — |
| Standard Library | ✓ | — |
| Deno Deploy | ✓ | — |
| npm Compatibility | ✓ | — |
| Web Standard APIs | ✓ | — |
| JavaScript Runtime | — | ✓ |
| Package Manager | — | ✓ |
| Bundler | — | ✓ |
| Test Runner | — | ✓ |
| TypeScript Native | — | ✓ |
| Node.js Compatible | — | ✓ |
| Open Source | ✓ | ✓ |
| Rating | ⭐ 4.2 | ⭐ 4.4 |
Choose Deno if: You need typescript developers wanting a modern runtime. Deno excels with its typescript native and secure sandbox.
Choose Bun if: You need developers wanting maximum javascript performance. Bun stands out with its blazing fast and all-in-one tool.
Best free option: Both Deno and Bun offer free tiers. Deno offers "Open source + Deno Deploy free" while Bun offers "Fully open source".
It depends on your needs. Deno is better for typescript developers wanting a modern runtime, while Bun is better for developers wanting maximum javascript performance. Both are excellent tools rated 4.2 and 4.4 respectively.
Deno starts at $20/mo (Deploy Pro) while Bun starts at Free. Both offer free tiers.
Most tools offer import/export features to help you migrate. We recommend trying Bun's free tier before fully committing to a switch.
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