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| Metric | Bun | Firecracker | Fastly Compute |
|---|---|---|---|
| Score | B+76 | B70 | B-69 |
| Type | Language | MicroVM | Edge |
| Execution | jit | aot | aot |
| Interface | cli | api | cli |
| Cold Start | 3ms | 125ms | 50ms |
| Memory | 25MB | 5MB | 128MB |
| Startup | 1ms | 100ms | 10ms |
| Isolation | process | microvm | container |
| Maturity | stable | production | production |
| Languages | JavaScript, TypeScript, JSX, TSX | Any | Rust, JavaScript, AssemblyScript, Go |
| License | MIT | Apache-2.0 | Apache-2.0 |
| Links |