Unverified50% confidenceBenchmarkExact time
以 GPT-5.5 为例，模型能力随上下文长度增长而下降：256K 约 87.5、512K 约 81.5、1M 约 74（趋势数据，非精确数值）
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
8/24/2026
First Seen
Valid until: 11/22/2026
Sources
Related Entities
Related Claims
Partially VerifiedGPT-5.6 is a notable improvement over GPT-5.5, but has not yet reached the level of a "cross-generational" leap and has not resolved the model's original weaknesses.77% similarUnverifiedA large number of users have reported that GPT-5.5 suffers from degraded output quality.76% similarUnverifiedTesters consider GPT-5.6 to be a qualitative leap forward compared to 5.4 and 5.5.74% similarUnverifiedGPT-5.5's score on the GPQA doctoral-level scientific reasoning benchmark improved from 78.5% to 85.6%.73% similarUnverifiedTop autoregressive models such as GPT-4o and Claude 3.5 have already exceeded 95% accuracy on GSM8K, leading to benchmark saturation.73% similar
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