Unverified50% confidenceFactExact time
The researchers used a formal grammar lens benchmark to test GPT-5.5 and its Pro-Medium, Pro-High, and Pro-XHigh reasoning-level variants, and found that the model's acceptance rate on the test data increases with reasoning level.
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50%
Confidence
Medium-term (~90 days)
Relevance
11/3/2026
First Seen
Valid until: 2/1/2027
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