[bot] Add /model --session, /model plan, and copilot plugins install --skill documentation - #195
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…--skill Document three beginner-relevant features added in recent CLI releases: - Chapter 01: Add tip about /model --session (-s) for session-only model changes - Chapter 04: Add /model plan section showing how to set a dedicated model for plan mode (useful for saving premium quota on lightweight planning tasks) - Chapter 05: Add copilot plugins install --skill as a CLI-native skill installation option alongside the existing gh skill install and copilot skill add commands Sources: - v1.0.75 release (2026-07-24): Claude Opus 5 support - v1.0.74 release (2026-07-23): /model plan command - v1.0.72 release (2026-07-20): /model --session, copilot plugins install --skill Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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@copilot I like the following and want that included in the PR. However, the other items should be removed from the PR. Include this only: Chapter 04 — Agents & Custom Instructions (04-agents-custom-instructions/README.md) Added a new "Choosing a Model for Plan Mode" subsection under the Built-in Agents section, documenting /model plan with an example and a tip on saving premium quota by using lighter models for planning. |
Done. Reverted the Chapter 01 ( |
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@copilot I don't agree with using a lower model for plan mode. In fact, a frontier model used upfront to create a solid plan which can actually save on tokens and time down the road. Let's update this section to reflect that:
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Updated the tip to reflect that using a frontier model for planning can save tokens and time overall by producing a precise, well-scoped plan upfront. |
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Pull request overview
Documents dedicated model selection for Copilot CLI plan mode. The broader Chapter 01 and Chapter 05 updates described in the PR are missing.
Changes:
- Adds
/model planusage and model-selection examples. - Explains plan-mode model behavior and benefits.
Show a summary per file
| File | Description |
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04-agents-custom-instructions/README.md |
Adds plan-mode model guidance. |
Review details
- Files reviewed: 1/1 changed files
- Comments generated: 2
- Review effort level: Medium
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| > 💡 **Why set a plan-mode model?** A high-quality plan created by a frontier model upfront can actually save tokens and time overall. A precise, well-scoped plan means fewer back-and-forth corrections during implementation. | ||
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| > 📚 **Official Documentation**: [GitHub Copilot CLI Agents](https://docs.github.com/copilot/how-tos/copilot-cli/use-copilot-cli/invoke-custom-agents) |
| > 💡 **Multi-turn subagents**: Subagents (background tasks launched by agents) support follow-up messages. While an agent is running in the background, you can open `/tasks` to view it and send follow-up instructions. You don't have to wait for it to finish before guiding it further. Think of it like being able to tap your assistant on the shoulder mid-task to give extra direction. | ||
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| > 📚 **Official Documentation**: [GitHub Copilot CLI Agents](https://docs.github.com/copilot/how-tos/use-copilot-agents/use-copilot-cli#use-custom-agents) | ||
| ### Choosing a Model for Plan Mode |
What's New in the CLI (July 20–24, 2026)
The following beginner-relevant features were released in Copilot CLI v1.0.72–v1.0.75 and are not yet documented in the course:
New Features Found
copilot plugins install --skill— install skills directly from the CLI/model --session(-s) — change model for current session only/model plan//model --plan— pick a dedicated model for plan modeCourse Sections Updated
Chapter 01 — First Steps (
01-setup-and-first-steps/README.md)/model --session(-s) in the Switching Models section, explaining how to change models for a single session without affecting the global default.Chapter 04 — Agents & Custom Instructions (
04-agents-custom-instructions/README.md)/model planwith an example and a tip on saving premium quota by using lighter models for planning.Chapter 05 — Skills (
05-skills/README.md)copilot plugins install --skillas a new installation option in the "Finding and Using Community Skills" section, positioned before the existinggh skill installcoverage. Includes--scope projectfor team-shared installs.Source Announcements