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| Metric | Cloudflare Workers | Metal | Node.js |
|---|---|---|---|
| Score | B+75 | B74 | B-65 |
| Type | Edge | Language | |
| Execution | jit | aot | jit |
| Interface | platform | sdk | cli |
| Cold Start | <1ms | 50ms | 50ms |
| Memory | 128MB | 100MB | 40MB |
| Startup | <1ms | 20ms | 20ms |
| Isolation | process | hardware | process |
| Maturity | production | production | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Swift, Objective-C, C++ | JavaScript, TypeScript |
| License | Proprietary | Proprietary | MIT |
| Links |