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| Metric | Bun | Vercel Edge Functions | Jan |
|---|---|---|---|
| Score | B+76 | B71 | F34 |
| Type | Language | Edge | |
| Execution | jit | jit | hybrid |
| Interface | cli | platform | gui |
| Cold Start | 3ms | 10ms | 2000ms |
| Memory | 25MB | 128MB | 600MB |
| Startup | 1ms | 1ms | 400ms |
| Isolation | process | process | process |
| Maturity | stable | stable | stable |
| Languages | JavaScript, TypeScript, JSX, TSX | JavaScript, TypeScript, WebAssembly | TypeScript, Python |
| License | MIT | Proprietary | AGPL-3.0 |
| Links |