ReASearch: Single LLM Agent Outperforms Specialized Optimizers Across ML Workflows

_reachsumit · x · 2026-08-10

ReASearch is a novel reasoning-driven optimization framework. Unlike traditional methods relying on explicit outer-loop controllers like evolutionary search, this framework empowers a single tool-using LLM agent to autonomously run the entire optimization loop.

The agent independently decides what to evaluate, diagnoses failures, makes edits, and verifies or restarts. Across 14 diverse tasks, ReASearch outperforms specialized optimization systems, achieving 2% to 40% gains over strong domain-specific baselines and occasionally discovering solutions better than prior human best-known results.

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