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| Metric | Wasmer | Python (CPython) | Firecracker | Deno |
|---|---|---|---|---|
| Score | A-83 | B71 | B70 | C+64 |
| Type | WebAssembly | Language | MicroVM | Language |
| Execution | hybrid | interpreted | aot | jit |
| Interface | cli | cli | api | cli |
| Cold Start | 2ms | 50ms | 125ms | 20ms |
| Memory | 8MB | 15MB | 5MB | 35MB |
| Startup | 1ms | 10ms | 100ms | 15ms |
| Isolation | process | process | microvm | process |
| Maturity | stable | production | production | stable |
| Languages | Rust, C, C++, Go, Python, Ruby, PHP | Python | Any | JavaScript, TypeScript, WebAssembly |
| License | MIT | Other | Apache-2.0 | MIT |
| Links |