AI News: ChatGPT Memory, Copilot Agents, and Million-Token Context

AI News: ChatGPT Memory, Copilot Agents, and Million-Token Context

Quick headlines first, then a sourced breakdown of today's AI stories from June 4, 2026.

Title options:
- Primary: AI News: ChatGPT Memory, Copilot Agents, and Million-Token Context
- Clickbait Alt 1: AI Assistants Just Got a Memory Upgrade
- Clickbait Alt 2: GitHub Gave Copilot a Million-Token Brain

Sources:
- [S1] Dreaming: Better memory for a more helpful ChatGPT (OpenAI, 2026-06-04): https://openai.com/index/chatgpt-memory-dreaming/
- [S2] Agent tasks REST API now available for Copilot Pro, Pro+, and Max (GitHub Changelog, 2026-06-04): https://github.blog/changelog/2026-06-04-agent-tasks-rest-api-now-available-for-copilot-pro-pro-and-max/
- [S3] Larger context windows and configurable reasoning levels for GitHub Copilot (GitHub Changelog, 2026-06-04): https://github.blog/changelog/2026-06-04-larger-context-windows-and-configurable-reasoning-levels-for-github-copilot/
- [S4] GitHub Copilot in Visual Studio - May update (GitHub Changelog, 2026-06-04): https://github.blog/changelog/2026-06-04-github-copilot-in-visual-studio-may-update/
- [S5] Copilot Chat brings richer context to pull requests (GitHub Changelog, 2026-06-04): https://github.blog/changelog/2026-06-04-copilot-chat-brings-richer-context-to-pull-requests/
- [S6] Welcome NVIDIA Cosmos 3: The First Open Omni-model for Physical AI Reasoning and Action (NVIDIA on Hugging Face, 2026-06-01): https://huggingface.co/blog/nvidia/cosmos-3-for-physical-ai
- [S7] Introducing Search Toolkit (Mistral AI, 2026-05-28): https://mistral.ai/news/search-toolkit/
- [S8] Microsoft Build 2026: Be yourself at work (Microsoft Official Blog, 2026-06-02): https://blogs.microsoft.com/blog/2026/06/02/microsoft-build-2026-be-yourself-at-work/

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