Stanford & DeepMind's TURTLE evolves tool-use benchmarks into harder, self-tuning tests

rohanpaul_ai · x · 2026-11-09

A Stanford and Google DeepMind paper introduces TURTLE, an Unsupervised Environment Design method that uses three LLM agents (proposer, solver, feedback generator) to evolve existing tool-use tasks into harder but still solvable tests. On AppWorld, τ-Bench and AutomationBench with Gemma 4 31B-it, it raised the share of hard tasks on AppWorld by 165%, increased task diversity, and elicited broader failure modes—addressing the problem of static benchmarks being quickly saturated.

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