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| Metric | Bun | Python (CPython) | Firecracker | Jan |
|---|---|---|---|---|
| Score | B+76 | B71 | B70 | F34 |
| Type | Language | Language | MicroVM | |
| Execution | jit | interpreted | aot | hybrid |
| Interface | cli | cli | api | gui |
| Cold Start | 3ms | 50ms | 125ms | 2000ms |
| Memory | 25MB | 15MB | 5MB | 600MB |
| Startup | 1ms | 10ms | 100ms | 400ms |
| Isolation | process | process | microvm | process |
| Maturity | stable | production | production | stable |
| Languages | JavaScript, TypeScript, JSX, TSX | Python | Any | TypeScript, Python |
| License | MIT | Other | Apache-2.0 | AGPL-3.0 |
| Links |