Anthropic launched Claude Opus 4 and Claude Sonnet 4 models for long-running tasks with specific strengths.The company introduced beta for extended thinking, tool use, tool parallelism, and Claude Code availability.Anthropic API added four new capabilities like code execution, MCP connector, Files API, and prompt caching.OpenAI updated Responses API with features like remote MCP server support and Code Interpreter tool.OpenAI included background mode, reasoning summaries, and the ability to reuse reasoning items in API requests.Mistral launched Devstral, an LLM for coding agents outperforming GPT-4.1-mini and Claude 3.5 Haiku.Google I/O presented new AI models like Gemini Diffusion, Gemma 3n for various tasks, and Gemma variants.Google announced Gemma Code Assist versions, reimagined Colab, Stitch tool, and Firebase Studios features.Microsoft Build introduced GitHub Copilot's new features and Windows AI Foundry platform for AI developer support.Microsoft unveiled NLWeb for conversational AI interfaces and Model Context Protocol support across platforms.