Lean vs SeaHorn
| Lean | SeaHorn | |
|---|---|---|
| Free plan | No | No |
| Free trial | No | No |
| Paid from | — | — |
| Open source | No | No |
| Platforms | Linux, macOS, Web, Windows | Linux, macOS |
| Verification method | deductive | hybrid |
| Supported formalisms | theorem-proving | invariants |
| Proof artifacts | Yes | — |
| Input languages | Lean 4 | C, LLVM IR |
| Deployment | both | self-hosted |
| Counterexamples | — | Yes |
Both are listed in Best Formal Verification Tools. On Freedom251, Lean scores higher on our published basis.