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Two API Settings Tripled GPT-5.6's Score on a Tough AI Benchmark โ Here's What They Are
OpenAI NewsยทFriday, 31 July 2026

OpenAI found that enabling two specific API settings dramatically improved GPT-5.6's performance on the ARC-AGI-3 benchmark, tripling scores while also boosting efficiency. The two settings involve retaining reasoning and enabling compaction. This shows that how you call the API matters just as much as which model you use.
Why It Matters
If you build anything with OpenAI's API, these settings could make your app significantly smarter and cheaper without switching models.
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