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| Metric | Bun | Vercel Edge Functions | Fastly Compute |
|---|---|---|---|
| Score | B+76 | B71 | B-69 |
| Type | Language | Edge | Edge |
| Execution | jit | jit | aot |
| Interface | cli | platform | cli |
| Cold Start | 3ms | 10ms | 50ms |
| Memory | 25MB | 128MB | 128MB |
| Startup | 1ms | 1ms | 10ms |
| Isolation | process | process | container |
| Maturity | stable | stable | production |
| Languages | JavaScript, TypeScript, JSX, TSX | JavaScript, TypeScript, WebAssembly | Rust, JavaScript, AssemblyScript, Go |
| License | MIT | Proprietary | Apache-2.0 |
| Links |