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| Metric | Bun | Metal | Jan |
|---|---|---|---|
| Score | B+76 | B74 | F34 |
| Type | Language | ||
| Execution | jit | aot | hybrid |
| Interface | cli | sdk | gui |
| Cold Start | 3ms | 50ms | 2000ms |
| Memory | 25MB | 100MB | 600MB |
| Startup | 1ms | 20ms | 400ms |
| Isolation | process | hardware | process |
| Maturity | stable | production | stable |
| Languages | JavaScript, TypeScript, JSX, TSX | Swift, Objective-C, C++ | TypeScript, Python |
| License | MIT | Proprietary | AGPL-3.0 |
| Links |