Épi research agent sets 120 records on math problems
The fixed verifier design is the key detail: it keeps the agent's self-improvement honest by preventing it from altering how its own outputs are judged. Builders working on long-running agents can borrow the pattern of persistent history, versioned branches and independent review. The Épi-turbo comparison against Codex on FrontierOR offers a concrete cost-versus-accuracy reference point for teams automating solver generation.
