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| Metric | Wasmtime | Cloudflare Workers | V8 | Python (CPython) |
|---|---|---|---|---|
| Score | A88 | B+75 | B74 | B71 |
| Type | WebAssembly | Edge | Language | Language |
| Execution | aot | jit | jit | interpreted |
| Interface | cli | platform | embedded | cli |
| Cold Start | 1ms | <1ms | 5ms | 50ms |
| Memory | 5MB | 128MB | 30MB | 15MB |
| Startup | <1ms | <1ms | 2ms | 10ms |
| Isolation | process | process | process | process |
| Maturity | production | production | production | production |
| Languages | Rust, C, C++, Go, Python, AssemblyScript | JavaScript, TypeScript, Rust, C, C++ | JavaScript, TypeScript, WebAssembly | Python |
| License | Apache-2.0 | Proprietary | BSD-3-Clause | Other |
| Links |