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Welcome back to GitHub Checkout! In this episode, we sit down with Copilot CLI Product Manager Ryan Hecht to explore the latest experimental features. We dive into the new plugin marketplace, the powerful /chronicle slash command for self-healing prompts, and how to run Claude Opus 4.6, GPT-5.4, and Gemini 3 simultaneously. See how /fleet mode and autopilot can handle massive refactoring tasks while you step away. Install Copilot CLI: https://github.com/features/copilot/cli?utm_source=social-youtube-checkout-cli-features-cta&utm_medium=social&utm_campaign=dev-pod-copilot-cli-2026 #GitHubCopilot #CopilotCLI #GitHub — CHAPTERS — 00:00 Welcome to GitHub Checkout 00:26 Experimental mode and subagents 01:16 Managing Copilot CLI plugins 03:16 Using the chronicle command 07:39 Multi-model background agents 11:10 Fleet mode and autopilot 13:13 What is coming next? Stay up-to-date on all things GitHub by connecting with us: YouTube: https://gh.io/subgithub Blog: https://github.blog X: https://twitter.com/github LinkedIn: https://linkedin.com/company/github Insider newsletter: https://resources.github.com/newsletter/ Instagram: https://www.instagram.com/github TikTok: https://www.tiktok.com/@github About GitHub It’s where over 180 million developers create, share, and ship the best code possible. It’s a place for anyone, from anywhere, to build anything—it’s where the world builds software. https://github.com