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| Metric | Cloudflare Workers | Python (CPython) | Firecracker | Deno |
|---|---|---|---|---|
| Score | B+75 | B71 | B70 | C+64 |
| Type | Edge | Language | MicroVM | Language |
| Execution | jit | interpreted | aot | jit |
| Interface | platform | cli | api | cli |
| Cold Start | <1ms | 50ms | 125ms | 20ms |
| Memory | 128MB | 15MB | 5MB | 35MB |
| Startup | <1ms | 10ms | 100ms | 15ms |
| Isolation | process | process | microvm | process |
| Maturity | production | production | production | stable |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Python | Any | JavaScript, TypeScript, WebAssembly |
| License | Proprietary | Other | Apache-2.0 | MIT |
| Links |