@kazani
Impossible Research created an agent harness called [schema] that plays games, writes code, reasons like a physicist, and saturates the ARC-AGI-3 benchmark.
ARC-AGI-3 gives an agent a 64Γ64 grid plus legal actions, no rules, stated goal, or reward. The agent must discover both what the world is and how it works like a physicist:
1. State grounding -> identify objects, relations, and goals.
2. Mechanism discovery -> infer how these states change.
[schema] handles the state and mechanism in one editable program, a symbolic world model. It designs experiments to verify hypotheses, backtests the program against history, and plans inside its world at zero action cost.
Full blog: http://schema-harness.github.io
Agent traces: http://huggingface.co/datasets/schema-harness/arc-agi-3-schema-traces