Comparison

Gemini CLI vs GitHub Copilot

How the two compare on the things that decide whether your setup carries over: open standards, license, models and where they run.

Gemini CLIGitHub Copilot
MakerGoogleGitHub / Microsoft
LicenseApache-2.0Proprietary
ModelsGoogle Gemini modelsSee vendor docs
Runs inTerminalIDE, GitHub, CLI
MCPMCP: supportedMCP: supported
Agent SkillsAgent Skills: supportedAgent Skills: supported
AGENTS.mdAGENTS.md: supportedAGENTS.md: supported
ACPACP: supportedACP: supported

Key differences

  • Gemini CLI is open source (Apache-2.0); GitHub Copilot is proprietary. If you need to self-host, audit or fork the harness, that settles it.
  • Gemini CLI also runs in Terminal; GitHub Copilot also runs in IDE, GitHub, CLI.
  • Both support MCP, Agent Skills, AGENTS.md, ACP, so MCP servers, skills and repo instructions you set up carry over if you switch.

In their own words

Gemini CLI

Google's open-source terminal agent for Gemini models, with MCP servers, extensions, Skills and AGENTS.md support.

WebsiteMCP docs

GitHub Copilot

Copilot's coding agent and VS Code agent mode. Agent Skills, AGENTS.md and MCP are supported; ACP support is in public preview.

WebsiteMCP docs

FAQ

Is Gemini CLI or GitHub Copilot open source?
Gemini CLI is open source under Apache-2.0. GitHub Copilot is proprietary.
Do Gemini CLI and GitHub Copilot support MCP servers?
Gemini CLI: yes. GitHub Copilot: yes.
Can I reuse Agent Skills between Gemini CLI and GitHub Copilot?
Yes. Both read the open Agent Skills (SKILL.md) format, so the same skill folder works in both.

Set up MCP servers in either one

MCP install guide for Gemini CLIMCP install guide for VS CodeAll official MCP servers

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Reviewed Oct 5, 2026.