Gemini CLI is Google's open-source terminal agent for Gemini models. It remains an important open-source project and historical reference, but Google announced that free, Google AI Pro, and Ultra usage moved to Antigravity CLI on June 18, 2026.
Current status
Legacy for many individual users - Google says Gemini CLI and Gemini Code Assist IDE extensions stopped serving free, Pro, and Ultra requests on June 18, 2026. Those tiers are now supported through Antigravity CLI.
Open-source reference - The GitHub repository still matters for architecture, history, forks, and migration context.
Enterprise caveat - Enterprise and Google Cloud paths should be verified separately before making customer-specific recommendations.
Autonomy level
Level 3 historically: a supervised terminal agent with file, shell, MCP, and repo workflows. For current individual-user guidance, evaluate Antigravity CLI.
Strengths
- Open-source implementation
- Important Gemini terminal-agent reference
- MCP and local project workflows shaped the Google CLI-agent path
Limitations
- Individual free, Pro, and Ultra usage moved to Antigravity CLI on June 18, 2026
- Assistant-response history and terminal capture behavior need careful DevThrottle handling
- Current public recommendations should lead with Antigravity CLI