ChatGPT Atlas: OpenAI's AI Browser

**OpenAI** launched the **Chromium fork AI browser Atlas** for macOS, featuring integrated **Agent mode** and browser memory with local login capabilities, aiming to surpass **Google's Gemini** in Chrome. The launch received mixed reactions regarding reliability and privacy. **LangChain** raised a **$125M Series B** at a $1.25B valuation, releasing **v1.0 agent engineering stack** with significant adoption including **85M+ OSS downloads/month** and usage by ~35% of the Fortune 500. The ecosystem also saw updates like **vLLM's MoE LoRA expert finetuning support**.