not much happened today

**OpenAI** loosens its **Azure exclusivity**, allowing distribution across **Google TPU**, **AWS Trainium**, and **Bedrock** with commitments through **2032** and revenue share through **2030**. **GPT-5.5** shows improved benchmarks but is not uniformly dominant, ranking variably across coding, document, math, and vision tasks. GitHub's **Copilot** shifts to usage-based billing starting June 1, reflecting increased runtime costs. **OpenAI** open-sourced **Symphony**, an orchestration layer for issue tracking and Codex agents. **Xiaomi** released **MiMo-V2.5** and **MiMo-V2.5-Pro**, large context models with up to **1M-token context** and trillions of tokens trained, emphasizing complex agent and omni-modal capabilities. **Kimi K2.6** leads OpenRouter's leaderboard, noted for coding and long-horizon agent capabilities with large-scale sub-agent coordination.