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| Metric | Bun | Python (CPython) | Firecracker | AWS Lambda | Node.js | Google Cloud Functions |
|---|---|---|---|---|---|---|
| Score | B+76 | B71 | B70 | B-65 | B-65 | C59 |
| Type | Language | Language | MicroVM | Serverless | Language | Serverless |
| Execution | jit | interpreted | aot | hybrid | jit | hybrid |
| Interface | cli | cli | api | platform | cli | platform |
| Cold Start | 3ms | 50ms | 125ms | 200ms | 50ms | 300ms |
| Memory | 25MB | 15MB | 5MB | 128MB | 40MB | 128MB |
| Startup | 1ms | 10ms | 100ms | 100ms | 20ms | 50ms |
| Isolation | process | process | microvm | microvm | process | container |
| Maturity | stable | production | production | production | production | production |
| Languages | JavaScript, TypeScript, JSX, TSX | Python | Any | JavaScript, TypeScript, Python, Java, Go, Ruby, .NET, Rust | JavaScript, TypeScript | Python, JavaScript, TypeScript, Go, Java, Ruby, PHP |
| License | MIT | Other | Apache-2.0 | Proprietary | MIT | Proprietary |
| Links |