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| Metric | Wasmtime | Cloudflare Workers | Google Cloud Functions |
|---|---|---|---|
| Score | A88 | B+75 | C59 |
| Type | WebAssembly | Edge | Serverless |
| Execution | aot | jit | hybrid |
| Interface | cli | platform | platform |
| Cold Start | 1ms | <1ms | 300ms |
| Memory | 5MB | 128MB | 128MB |
| Startup | <1ms | <1ms | 50ms |
| Isolation | process | process | container |
| Maturity | production | production | production |
| Languages | Rust, C, C++, Go, Python, AssemblyScript | JavaScript, TypeScript, Rust, C, C++ | Python, JavaScript, TypeScript, Go, Java, Ruby, PHP |
| License | Apache-2.0 | Proprietary | Proprietary |
| Links |