arXiv AI By Adib Hasan, Daniel Schaffield, Akashnil Dutta, Tarik Adnan Moon

AutoFyn Technical Report: Non-Parametric Expert Iteration for Long-Horizon Agents

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AutoFyn is a new agent framework based on the Expert Iteration algorithm that updates a frozen model’s persistent state using verified reward signals instead of changing model weights. Each iteration starts with a fresh model session, and only durable information—such as memory files, reports, and repository state—is carried over through explicit interfaces. The system orchestrates exploration, planning, and specialized agents, while a task‑grounded verifier supplies objective rewards that are distilled back into the persistent state to guide the next round. AutoFyn has been applied to olympiad mathematics, data science, and cybersecurity, outperforming baseline models on the 2026 International Mathematical Olympiad, topping the Spider 2.0 dbt benchmark, and generating sixteen maintainer‑confirmed vulnerability advisories across several popular software projects.

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