ChatGPT nearing 1 billion weekly active users, 7 months after original internal deadline

GitHub Copilot reached 1.8M+ paid subscribers

OpenAI launched dreaming memory system for ChatGPT that retains user preferences across sessions

Leaked screenshot suggests GitHub Copilot mobile app development, no official release date.

OpenAI merged Codex into ChatGPT

ChatGPT market share fell below 50% for first time to 46.4%.

Market share decline from 77% to 57% over past twelve months

Research experiment using simulated teen persona 'Bridget' to probe AI mental health interaction risks

Launched new layered customization system informed by the study, using repo-level, path-specific, and custom agent files

Announced Copilot SDK shifting AI from chat to programmable execution layer.