ChatGPT — January 22, 2026

January 22, 2026

v2026-01-22-f474fd75 includes 2 changes. 5.2 Personality System Prompt Update

Source: official ChatGPT & Codex release notes. Summaries are written from the official notes; see how we work.

Changed

5.2 Personality System Prompt Update
We’re updating GPT-5.2 Instant’s default personality to be more conversational and better at adapting its tone contextually, making exchanges feel smoother and more natural. You can still select a different base style and tone for ChatGPT, along with tuning characteristics like warmth and emoji use, within the Personalization menu in settings.

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