https://charleshuang.me/2026/09/27/theoremsmith/

Making models better at formal verification will help push the boundaries of math research and significantly reduce the number of bugs in our code. Recently, training models on RL environments (tasks paired with verifiers that reward correct solutions) has driven big gains in model performance, and proofs are unusually easy to verify. Here we introduce TheoremSmith, a pipeline for generating synthetic formal verification environments. It reliably creates multi-hour, frontier-difficulty tasks and can scale throughput effectively.

I'd appreciate any feedback, especially on ways models could still cheat the verifier, and on whether synthetic tasks like these are likely to help on real proofs.

Code: https://github.com/abundant-ai/theoremsmith