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| Metric | Wasmtime | Bun | Metal |
|---|---|---|---|
| Score | A88 | B+76 | B74 |
| Type | WebAssembly | Language | |
| Execution | aot | jit | aot |
| Interface | cli | cli | sdk |
| Cold Start | 1ms | 3ms | 50ms |
| Memory | 5MB | 25MB | 100MB |
| Startup | <1ms | 1ms | 20ms |
| Isolation | process | process | hardware |
| Maturity | production | stable | production |
| Languages | Rust, C, C++, Go, Python, AssemblyScript | JavaScript, TypeScript, JSX, TSX | Swift, Objective-C, C++ |
| License | Apache-2.0 | MIT | Proprietary |
| Links |