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| Metric | Cloudflare Workers | gVisor | Python (CPython) | Fastly Compute |
|---|---|---|---|---|
| Score | B+75 | B72 | B71 | B-69 |
| Type | Edge | MicroVM | Language | Edge |
| Execution | jit | hybrid | interpreted | aot |
| Interface | platform | cli | cli | cli |
| Cold Start | <1ms | 50ms | 50ms | 50ms |
| Memory | 128MB | 20MB | 15MB | 128MB |
| Startup | <1ms | 30ms | 10ms | 10ms |
| Isolation | process | microvm | process | container |
| Maturity | production | stable | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Any | Python | Rust, JavaScript, AssemblyScript, Go |
| License | Proprietary | Apache-2.0 | Other | Apache-2.0 |
| Links |