Blog
Mert Özen's blog posts on software development, backend, frontend, and DevOps.
Getting Started with GitHub Copilot: Plans, AI Credits, Surfaces (VS 2026, VS Code, Rider, GitHub.com, CLI) and Model Choice
In Copilot, agent sessions spend your credits, not inline suggestions: since 1 June 2026 billing uses token-based GitHub AI Credits, and a thirty-step session costs between 4 and 128 credits depending on the model. Plans, base and flex credits, auto and Copilot Fusion, setting up Visual Studio 2026, VS Code, GitHub.com and the CLI, and organization policies.
Copilot CLI: An Agent in the Terminal, Plan Mode, Sandboxing, Automation with `copilot -p` and ACP
copilot -p can exit with 0 while the answer is wrong: in Bookstore both runs with a local model returned 0, one printing a useless JSON fragment, the other bullets that are not in the commit. Installation, plan mode, --allow-tool and --deny-tool rules, sandboxing and --cloud, GitHub Actions with GITHUB_TOKEN and copilot-requests, the permission actionlint does not know, BYOK and an ACP client.