Built and verified for GH-300 revision on 26 August 2026. Every shortcut, command, billing unit, model name and file path on this card is confirmed against official GitHub or Microsoft documentation.
Microsoft Learn — Study guide for Exam GH-300 · GitHub Docs — GitHub Copilot
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Chat modes#
| Mode | Use it for | Can change files? | Can run terminal commands? |
|---|---|---|---|
| Ask | Read-only Q&A, explanation, research, brainstorming, and help understanding code. | No | No |
| Plan | Planning a change with read-only tools before you approve the implementation plan. Plan replaced Edit mode. | After approval | No |
| Agent | Multi-file implementation, iteration, testing, MCP tool use, and end-to-end task completion. | Yes, with review | Yes, with approval |
The chat modes are Ask, Plan and Agent. Only agent mode runs terminal commands, and it needs your approval.
VS Code slash commands#
| Command | What to remember |
|---|---|
/clear | Clear the current chat conversation. |
/explain | Explain code or a selected block. |
/fix | Suggest a fix for selected code or a problem. |
/fixTestFailure | Help fix a failing test. |
/help | Show Copilot Chat help. |
/new | Scaffold a new file, project, or workspace. |
/tests | Generate tests for selected or referenced code. |
/doc is not a VS Code slash command
/doc belongs to Visual Studio and Xcode. Do not memorize it as part of the VS Code command list.
Chat references#
| Type | Current references |
|---|---|
| Chat variables | #block #class #comment #file #function #line #path #project #selection #sym |
| Participants | @github @terminal @vscode @azure (preview) |
Use #project for whole-project context.
Keyboard shortcuts — VS Code on Windows#
| Action | Shortcut |
|---|---|
| Accept suggestion | Tab |
| Dismiss suggestion | Esc |
| Next suggestion | Alt+] |
| Previous suggestion | Alt+[ |
| Open suggestion panel | Ctrl+Enter |
| Open inline chat | Ctrl+I |
Do not add Ctrl+Right for accept-word — that is the Eclipse binding. Do not assert Ctrl+Shift+I; it is not in the verified VS Code reference.
Plans#
| Plan | Price | Exam-relevant notes |
|---|---|---|
| Copilot Free | $0 | 2,000 code completions per month plus an allowance of AI credits. |
| Copilot Student | $0 | For verified students; includes cloud agent access. |
| Copilot Pro | $10 / month | Individual paid plan. |
| Copilot Pro+ | $39 / month | Individual paid plan with higher AI credit allowance and audit logs. |
| Copilot Max | $100 / month | Highest individual AI credit allowance. |
| Copilot Business | $19 / seat / month | Adds content exclusions and organization-wide policy management. |
| Copilot Enterprise | $39 / seat / month | Enterprise plan with Enterprise-level governance. |
| Feature | Available on |
|---|---|
| Agent mode | All plans, including Free |
| Copilot cloud agent | Student and all paid plans — not Free |
| Copilot Spaces | All plans, including Free |
| MCP | All plans, including Free |
| Audit logs | Pro+, Max, Business, Enterprise |
| Content exclusions | Business and Enterprise only |
| Organization-wide policy management | Business and Enterprise only |
GitHub Docs — Plans for GitHub Copilot
AI Credits billing#
| Fact | Current answer |
|---|---|
| Current billing unit | GitHub AI Credits |
| Live date | 1 June 2026 |
| Value | 1 AI credit = $0.01 USD |
| Code completions | Not billed in AI credits |
| Next edit suggestions | Not billed in AI credits |
| Model billing | Per token, not per request; no current multipliers |
| Plan | Monthly AI credits |
|---|---|
| Copilot Free | Allowance exists; exact number not published |
| Copilot Pro | 1,500 — 1,000 base plus 500 flex |
| Copilot Pro+ | 7,000 — 3,900 base plus 3,100 flex |
| Copilot Max | 20,000 — 10,000 base plus 10,000 flex |
| Copilot Business | 1,900 per user |
| Copilot Enterprise | 3,900 per user |
Legacy annual Pro and Pro+ subscribers may still see premium requests, but new subscriptions and monthly plans use AI Credits.
Privacy, exclusions, and governance#
| Topic | Current answer |
|---|---|
| Content exclusion scope | Repository, organization, and enterprise |
| What exclusions do | Stop Copilot reading excluded files for context and generating suggestions in them |
| Propagation | Up to 30 minutes; manual reload is available |
| Not supported | Copilot CLI; Agent mode in Copilot Chat in IDEs |
| Supported governance scope | Enterprise → organization |
| Not a policy scope | Team |
| Business / Enterprise code snippets | Not retained after suggestion |
| Business / Enterprise training | Code is never used for training |
Content exclusions are a Business and Enterprise feature. They are not a blanket guarantee across CLI or IDE Agent mode.
Customization paths#
| Purpose | Path |
|---|---|
| Repository custom instructions | .github/copilot-instructions.md |
| Path-specific instructions | .github/instructions/*.instructions.md |
| Prompt files | .github/prompts/*.prompt.md |
| Custom agents | .github/agents/NAME.md |
| Shareable MCP configuration | .vscode/mcp.json |
For MCP, the shareable repository configuration uses a servers block in .vscode/mcp.json, not mcp.servers in a personal settings file.
Six exam domains#
| # | Domain | Weight |
|---|---|---|
| 1 | Use GitHub Copilot responsibly | 15–20% |
| 2 | Use GitHub Copilot features | 25–30% |
| 3 | Understand GitHub Copilot data and architecture | 10–15% |
| 4 | Apply prompt engineering and context crafting | 10–15% |
| 5 | Improve developer productivity with GitHub Copilot | 10–15% |
| 6 | Configure privacy, content exclusions, and safeguards | 10–15% |
Domains 1 and 2 together account for 40–50% of the exam. Responsible AI is not a tiny afterthought.
Ten facts worth memorizing#
| Chat modes | Ask, Plan, Agent — only Agent runs terminal commands, with approval |
| Workspace context | #project |
/doc | Visual Studio and Xcode — not VS Code |
| Billing | AI Credits, per-token, since 1 June 2026. 1 credit = $0.01 |
| Base and LTS model | GPT-5.3-Codex, designated 18 March 2026 |
| Highest individual plan | Copilot Max, $100 / month |
| Custom agents | .github/agents/NAME.md |
| MCP config | .vscode/mcp.json, with a servers block |
| Policy hierarchy | Enterprise → organization. No team scope |
| Content exclusions | Repository, organization or enterprise. Up to 30 minutes to propagate. Not supported in Copilot CLI or IDE agent mode |
Last-minute rule#
If anything here conflicts with what you see in the product or in a practice question, check GitHub’s documentation — it is the authority on product behavior, and the official skills outline is the authority on what is examinable.