LeanSearch v2 recovers 46.1% of ground-truth premise groups for research-level Lean 4 theorems within 10 candidates and raises fixed-loop proof success to 20%.
The Sonnet column reproduces the L0 / L1 / reasoning-mode rows of Table 3; the Kimi column re-runs the same loops with Kimi K2 Instruct in the prover role only
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LeanSearch v2: Global Premise Retrieval for Lean 4 Theorem Proving
LeanSearch v2 recovers 46.1% of ground-truth premise groups for research-level Lean 4 theorems within 10 candidates and raises fixed-loop proof success to 20%.