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| Metric | Cloudflare Workers | Python (CPython) | Firecracker | AWS Lambda | Google Cloud Functions |
|---|---|---|---|---|---|
| Score | B+75 | B71 | B70 | B-65 | C59 |
| Type | Edge | Language | MicroVM | Serverless | Serverless |
| Execution | jit | interpreted | aot | hybrid | hybrid |
| Interface | platform | cli | api | platform | platform |
| Cold Start | <1ms | 50ms | 125ms | 200ms | 300ms |
| Memory | 128MB | 15MB | 5MB | 128MB | 128MB |
| Startup | <1ms | 10ms | 100ms | 100ms | 50ms |
| Isolation | process | process | microvm | microvm | container |
| Maturity | production | production | production | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Python | Any | JavaScript, TypeScript, Python, Java, Go, Ruby, .NET, Rust | Python, JavaScript, TypeScript, Go, Java, Ruby, PHP |
| License | Proprietary | Other | Apache-2.0 | Proprietary | Proprietary |
| Links |