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| Metric | Cloudflare Workers | Firecracker | Open WebUI |
|---|---|---|---|
| Score | B+75 | B70 | F41 |
| Type | Edge | MicroVM | |
| Execution | jit | aot | hybrid |
| Interface | platform | api | gui |
| Cold Start | <1ms | 125ms | 3000ms |
| Memory | 128MB | 5MB | 500MB |
| Startup | <1ms | 100ms | 1000ms |
| Isolation | process | microvm | container |
| Maturity | production | production | stable |
| Languages | JavaScript, TypeScript, Rust, C, C++ | Any | Python, TypeScript |
| License | Proprietary | Apache-2.0 | MIT |
| Links |