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| Metric | Cloudflare Workers | Python (CPython) | Fastly Compute | Google Cloud Functions |
|---|---|---|---|---|
| Score | B+75 | B71 | B-69 | C59 |
| Type | Edge | Language | Edge | Serverless |
| Execution | jit | interpreted | aot | hybrid |
| Interface | platform | cli | cli | platform |
| Cold Start | <1ms | 50ms | 50ms | 300ms |
| Memory | 128MB | 15MB | 128MB | 128MB |
| Startup | <1ms | 10ms | 10ms | 50ms |
| Isolation | process | process | container | container |
| Maturity | production | production | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Python | Rust, JavaScript, AssemblyScript, Go | Python, JavaScript, TypeScript, Go, Java, Ruby, PHP |
| License | Proprietary | Other | Apache-2.0 | Proprietary |
| Links |