Codex CLI vs Gemini CLI
A detailed comparison of Codex CLI and Gemini CLI across 11 dimensions.
Codex CLI
OpenAI's open-source AI coding agent CLI
- Price
- BYOK (Bring Your Own Key)
- GitHub Stars
- 100K+
- Open Source
- true
- Models
- GPT-4o, GPT-4.1, o-series (via API)
- Max Context
- 128K tokens
- Multi-file Edit
- true
- Git Integration
- true
- MCP Support
- true
- Sub-agents
- false
- Platforms
- macOS, Linux
- Released
- 2025
npm install -g @openai/codexGemini CLI
Google's open-source AI agent for the terminal
- Price
- Free (60 req/min, 1000 req/day)
- GitHub Stars
- 106K+
- Open Source
- true
- Models
- Gemini 2.5 Pro/Flash (multi-model support)
- Max Context
- 1M tokens
- Multi-file Edit
- true
- Git Integration
- false
- MCP Support
- true
- Sub-agents
- true
- Platforms
- macOS, Linux, Windows
- Released
- 2025
npm install -g @google/gemini-cliFull Comparison
| Tool | Price | GitHub Stars | Open Source | Models | Max Context | Multi-file Edit | Git Integration | MCP Support | Sub-agents |
|---|---|---|---|---|---|---|---|---|---|
Codex CLI🔓 OpenAI's open-source AI coding agent CLI | BYOK (Bring Your Own Key) | 100K+ | ✓ | GPT-4o, GPT-4.1, o-series (via API) | 128K tokens | ✓ | ✓ | ✓ | — |
Gemini CLI🔓 Google's open-source AI agent for the terminal | Free (60 req/min, 1000 req/day) | 106K+ | ✓ | Gemini 2.5 Pro/Flash (multi-model support) | 1M tokens | ✓ | — | ✓ | ✓ |
Quick Install
Codex CLI
npm install -g @openai/codexGemini CLI
npm install -g @google/gemini-cli