OpenAI Codex vs Cline
An honest, side-by-side comparison from the ToolHund editors — plus what the community actually votes for.
OpenAI Codex
AI coding agents for software engineering teams
Codex helps engineering teams complete pull requests, refactors, code reviews, and automations across parallel coding workflows.
Visit OpenAI CodexCline
Open coding agent for VS Code, terminal, and SDK workflows
Cline is an open-source coding agent with Plan and Act modes, MCP support, terminal workflows, and IDE integration.
Visit ClineCline takes the ToolHund Score (79/100 vs 64/100) — but the right pick depends on your workflow.
Pick OpenAI Codex if you need: developers and teams using chatgpt or openai tools for software engineering work. · Pick Cline if you need: developers who want an open-source coding agent with local control.
Which one should you pick?
- You need developers and teams using chatgpt or openai tools for software engineering work.
- Your team fits: great for small teams (2–20) and serious solo pros
- Learning curve OK: steep — expect a few hours to feel productive
- Pricing works: Included with ChatGPT paid plans
- You need developers who want an open-source coding agent with local control.
- Your team fits: great for small teams (2–20) and serious solo pros
- Learning curve OK: steep — expect a few hours to feel productive
- Pricing works: Open source · Bring your own key
Side-by-side comparison
| Feature | OpenAI Codex | Cline |
|---|---|---|
| Category | Agents | Agents |
| Pricing | Included with ChatGPT paid plans | Open source · Bring your own key |
| Best for | Developers and teams using ChatGPT or OpenAI tools for software engineering work. | Developers who want an open-source coding agent with local control. |
| Active users | Popular | 200K+ |
| Editor rating | 4.7 / 5 | 4.7 / 5 |
- Parallel tasks
- PR automation
- Code review
- ChatGPT integration
- Plan & Act modes
- MCP support
- Terminal workflows
- VS Code extension
Which one would you pick?
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Why did you choose OpenAI Codex or Cline?
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Common questions
Is OpenAI Codex better than Cline?+
Cline scores 79/100 on the ToolHund rubric vs OpenAI Codex at 64/100 — but "better" depends on your workflow. Cline wins if you need developers who want an open-source coding agent with local control.
What is the pricing difference between OpenAI Codex and Cline?+
OpenAI Codex: Included with ChatGPT paid plans. Cline: Open source · Bring your own key.
Can I use both OpenAI Codex and Cline together?+
Yes — many teams pair them. Use OpenAI Codex for developers and teams using chatgpt or openai tools for software engineering work. and switch to Cline when you need developers who want an open-source coding agent with local control.
Who should avoid OpenAI Codex?+
Casual or one-off users — the monthly fee won't pay back
Who should avoid Cline?+
Casual or one-off users — the monthly fee won't pay back
Other Agents comparisons
Keep comparing — see how OpenAI Codex stacks up against more tools in the same category.