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AI IntelligenceAug 23, 2026AI Intelligence

Article

5.6 high is answering like "instant". It seems unable to actually perform tasks

ChatGPT users report that its 5.6 high mode responds instantly but fails to actually execute project tasks. A community thread links the regression to a possible silent switch to the 5.5 mini model after an August 19 outage; the desktop app reportedly works better.

Frontier EditorialAug 22, 2026Source: Reddit r/ChatGPT

Source Brief

5.6 high is answering like "instant". It seems unable to actually perform tasks.: ChatGPT users report that its 5.6 high mode responds instantly but fails to actually execute project tasks. A community thread links the regression to a possible silent switch to the 5.5 mini model after an August 19 outage; the desktop app reportedly works better.

Model Reliability ChatGPT OpenAI GPT-5.6 Model Regression Read the issue

Source Brief

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