Codex CLI vs Aider
A detailed comparison of Codex CLI and Aider 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/codexAider
Open-source AI pair programming assistant in the terminal
- Price
- Free (BYOK)
- GitHub Stars
- 48K+
- Open Source
- true
- Models
- Claude, GPT-4o, DeepSeek, Llama, and more
- Max Context
- 依模型而定
- Multi-file Edit
- true
- Git Integration
- true
- MCP Support
- false
- Sub-agents
- false
- Platforms
- macOS, Linux, Windows
- Released
- 2023
pip install aider-chatFull 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 | ✓ | ✓ | ✓ | — |
Aider🔓 Open-source AI pair programming assistant in the terminal | Free (BYOK) | 48K+ | ✓ | Claude, GPT-4o, DeepSeek, Llama, and more | 依模型而定 | ✓ | ✓ | — | — |
Quick Install
Codex CLI
npm install -g @openai/codexAider
pip install aider-chat