GPT-5.6 ARC-AGI-3 scores surge 3x with specific API settings enabled
sandersted · x · 2026-07-30
Testing reveals that GPT-5.6 initially struggles with the ARC-AGI-3 benchmark. However, enabling two specific API settings used internally by ChatGPT and Codex boosts its public set score by roughly 3x and increases token efficiency by 6x. This highlights that real-world performance is heavily driven by product engineering around the model, not just the base model itself.
Related event: Optimized Memory Settings Triple GPT-5.6's Score on ARC-AGI-3(27 posts)→
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