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| Metric | Cloudflare Workers | Vercel Edge Functions | Fastly Compute |
|---|---|---|---|
| Score | B+75 | B71 | B-69 |
| Type | Edge | Edge | Edge |
| Execution | jit | jit | aot |
| Interface | platform | platform | cli |
| Cold Start | <1ms | 10ms | 50ms |
| Memory | 128MB | 128MB | 128MB |
| Startup | <1ms | 1ms | 10ms |
| Isolation | process | process | container |
| Maturity | production | stable | production |
| Languages | JavaScript, TypeScript, Rust, C, C++ | JavaScript, TypeScript, WebAssembly | Rust, JavaScript, AssemblyScript, Go |
| License | Proprietary | Proprietary | Apache-2.0 |
| Links |