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The Coding Agent Pushed the Alphabet

A coding loop solved Push-T without demonstrations, then extended its generated simulator curriculum from A through Z.

Published Updated Story ID: mp-2026-08-20-027
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Summary

A coding loop solved Push-T without demonstrations, then extended its generated simulator curriculum from A through Z.

For the classic Push-T benchmark, an LLM coding agent searched for the simulation, experimented with push mechanics and iteratively wrote a policy. The authors report 100 percent simulated success with 46 percent fewer steps than a diffusion policy trained on 200 demonstrations, then extend the method to alphabet-shaped blocks and two simulated robot arms. Videos and fuller details were still promised, so the striking claims remain an early short-paper result rather than independent verification.

Why it matters

A coding loop solved Push-T without demonstrations, then extended its generated simulator curriculum from A through Z.

Limits and context

  • Videos and fuller details were still promised, so the striking claims remain an early short-paper result rather than independent verification.

Key claims

  1. A coding loop solved Push-T without demonstrations, then extended its generated simulator curriculum from A through Z.

    Qualification: Videos and fuller details were still promised, so the striking claims remain an early short-paper result rather than independent verification.

    Evidence: source-2026-08-20-016

Sources

  1. arXiv preprint 2608.18227arXiv · primary research

Corrections

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