Expired50% confidencePredictionExact time
Berman predicts that the GPT-5 series is approaching its growth ceiling and that GPT-6 has likely completed base training and is currently undergoing post-training.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/19/2026
First Seen
Valid until: 10/17/2026(expired)
Sources
Related Claims
UnverifiedThe GPT-5.6 flagship model SO autonomously completed the post-training of the smallest model LUNA end-to-end.77% similarPartially 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.76% similarUnverifiedTesters consider GPT-5.6 to be a qualitative leap forward compared to 5.4 and 5.5.76% similarUnverifiedIf the default quick-answer mode is used, the underlying model running is still the previous-generation 5.5 model, and a manual switch is required to use GPT-5.6.74% similarUnverifiedGPT-4 completed training in August 2022 with fewer than 2 trillion parameters; the current GPT-5.6 has approximately 4 trillion parameters and Fable approximately 10 trillion parameters, only 5 to 6 times that of GPT-4.74% similar
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