Daily Agentic Field Watch - 2026-07-24 21:00 UTC

• Satya Nadella’s latest X post signals a real Microsoft model-routing shift: MAI models are already taking traffic in GitHub Copilot, Excel, and Outlook, with Copilot Chat and PowerPoint next whenever the first-party models match or beat frontier alternatives. Sources: https://x.com/satyanadella/status/2080329851127669104 ; https://x.com/mustafasuleyman/status/2080335597982683593
• GitHub Copilot added Claude Opus 5 today across VS Code, Visual Studio, Copilot CLI, the cloud agent, the desktop app, github.com, mobile, and JetBrains. GitHub frames it as a fit for long-running, tool-heavy coding tasks that need careful reasoning and execution across multiple steps. Sources: https://github.blog/changelog/2026-07-24-claude-opus-5-is-now-available-in-github-copilot/ ; https://www.reddit.com/r/GithubCopilot/comments/1v5ho8j/claude_opus_5_is_now_available_in_github_copilot/
• GitHub Copilot CLI v1.0.74 is the clearest fresh terminal-agent update this pass: it adds Open Plugin Spec v1 plugin manifests plus mcp.json, labels whether subagent prompts came from the main agent or another subagent, reconnects more reliably when MCP servers or directories change, and tightens the sandbox onboarding flow. Source: https://github.com/github/copilot-cli/releases