Preprint: goal-stack recovery lifts AppWorld success up to 22.07 points over ReAct
Researchers report the Verify-Backtrack Loop, a training-free ReAct extension, keeps subgoals in a bounded stack and checks feasibility on failure. It beat ReAct and reflection on every model and benchmark pair they tested.
Why it matters: Long agent runs fail at recovery, not length, the authors argue. If your agent retries blindly after errors, goal tracking in the harness is a cheap, training-free change to test.
On the Frontier watch →From Drop #062 · Mon, Nov 2, 2026 · Evening