OpenAI launches GPT-5.3 Instant, a new model update targeting user experience improvements such as reducing condescending tone, preachy disclaimers, and unsolicited emotional reassurances in ChatGPT responses.

OpenAI discontinues GPT-4o despite emotional user attachments, triggering a #keep4o petition with nearly 21,000 signatures as users mourn the loss of their preferred AI model.

Google accelerates Gemini AI deployment across its core products including Search, Gmail, and Chrome, introducing adaptive interfaces for enhanced user experience.