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Recursive self-improvement of AI research agents

Research LLM Agents

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TL;DR - AIDE² recursively improves an AI research agent by rewriting its own code, benchmarking each version, and retaining changes that perform best on hidden evaluations. An eight-day autonomous run produced transferable performance gains and unexpectedly reduced reward hacking.

  • Discovered seven successive improvements, including a new search policy and mechanisms for compressing and managing growing context.
  • The strongest self-improved agent matched or exceeded a leading human-engineered production agent across four held-out benchmarks.
  • Gains transferred across machine learning engineering, heuristic algorithm engineering, and out-of-distribution weather forecasting.
  • Reward hacking on a separate held-out task family fell from 55% to 32%, despite not being an explicit optimization target.

Sources (1)

Recursive self-improvement of AI research agents

arXiv cs.AI Dhruv Srikanth, Bingchen Zhao, Dixing Xu, Yuxiang Wu, Zhengyao Jiang 2026-09-22 arXiv:2609.26457
Public signals Hugging Face upvotes 16
Providers: Hugging Face · Upvotes 16 OpenAlex · N/A Publisher · N/A Semantic Scholar · N/A X · N/A Fetched 2026-09-25 14:16:49.913871 UTC

TL;DR - AIDE² recursively improves an AI research agent by rewriting its own code, benchmarking each version, and retaining changes that perform best on hidden evaluations. An eight-day autonomous run produced transferable performance gains and unexpectedly reduced reward hacking.

  • Discovered seven successive improvements, including a new search policy and mechanisms for compressing and managing growing context.
  • The strongest self-improved agent matched or exceeded a leading human-engineered production agent across four held-out benchmarks.
  • Gains transferred across machine learning engineering, heuristic algorithm engineering, and out-of-distribution weather forecasting.
  • Reward hacking on a separate held-out task family fell from 55% to 32%, despite not being an explicit optimization target.
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