Users say GPT-5.6 now distorts prompts and hallucinates on simple editing tasks

durumertt · reddit · 2026-07-21

A ChatGPT Plus user says GPT-5.6 with high-level thinking has become unreliable for everyday tasks.

• The model reportedly distorts intent even on simple prompts, such as simplifying a sentence while preserving meaning.
• It strips important details, adds hallucinated information, and turns fast multi-step work into more manual cleanup.
• When used for error checking, it produces bloated analysis and flags non-existent issues.
• The user says earlier versions felt more focused and reliable.

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