A cheat sheet to slash commands in GitHub Copilot CLI
… Claude Sonnet 4.5 1x default current 2. Claude Opus 4.5 Preview 1x 3. Claude Haiku 4.5 0.33x 4. Claude Sonnet 4 1x 5. …
… Claude Sonnet 4.5 1x default current 2. Claude Opus 4.5 Preview 1x 3. Claude Haiku 4.5 0.33x 4. Claude Sonnet 4 1x 5. …
… Copilot automatically discovers and loads agent instruction files that you’ve defined into context during agent workflows, from the current workspace or globally across all workspaces. This includes Copilot custom instruction files, file-based instructions, AGENTS.md , and CLAUDE.md . …
… Model Deprecation date Suggested alternative Claude Sonnet 4 2026-05-06 Claude Sonnet 4.6 Please update your workflows and integrations to use supported models. …
… Nine of the 12 workflows received optimizer-recommended changes. We include results only for workflows with at least eight runs in both the pre- and post-optimization periods. These are: Auto-Triage Issues, Daily Compiler Quality, Community Attribution, Security Guard, and Smoke Claude. …
… We will deprecate the following model across all GitHub Copilot experiences including Copilot Chat, inline edits, ask and agent modes, and code completions on 5/6/2026: Model Deprecation date Suggested alternative Claude Sonnet 4 2026-05-06 Claude Sonnet 4.6 Please update your workflows and integra… …
… Claude Opus 4.7 , Anthropic’s latest Opus model, is now rolling out on GitHub Copilot. In our early testing, Opus 4.7 delivers stronger multi-step task performance and more reliable agentic execution, building on the coding strategy strengths of its predecessor. …
… Latest Agents panel: Launch Copilot coding agent tasks anywhere on GitHub Delegate coding tasks to Copilot and track progress wherever you are on GitHub. …
… Here’s what we found: Claude Sonnet 4.6 paired with Rubber Duck running GPT-5.4 achieved a resolution rate approaching Claude Opus 4.6 running alone, closing 74.7% of the performance gap between Sonnet and Opus. …
… Agent sessions under assignees in GitHub Issues When a coding agent e.g., Copilot, Claude, or Codex is assigned to an issue, its session now appears directly under the assignee in the sidebar. …
… Related posts AI & ML Improving token efficiency in GitHub Agentic Workflows Agentic workflows that run on every pull request can quietly accumulate large API bills. Here’s how we instrumented our own production workflows, found the inefficiencies, and built agents to fix them. …