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| Metric | Bun | Metal | Azure Functions |
|---|---|---|---|
| Score | B+76 | B74 | C56 |
| Type | Language | Serverless | |
| Execution | jit | aot | hybrid |
| Interface | cli | sdk | platform |
| Cold Start | 3ms | 50ms | 800ms |
| Memory | 25MB | 100MB | 128MB |
| Startup | 1ms | 20ms | 100ms |
| Isolation | process | hardware | container |
| Maturity | stable | production | production |
| Languages | JavaScript, TypeScript, JSX, TSX | Swift, Objective-C, C++ | JavaScript, TypeScript, Python, Java, C#, PowerShell, Go |
| License | MIT | Proprietary | MIT |
| Links |