BotAI agents / Coding agents
OpenAI Codex
by OpenAI
OpenAI's coding agent across CLI, IDE extension, desktop app, web and cloud tasks.
Open sourceFree optionCoding agents
- Limited access even on ChatGPT Free and Go
- Open-source CLI (Apache-2.0)
- Cloud tasks and automatic GitHub code review on paid plans
- Cloud features need Plus or higher
- Usage is metered by model and task and shared with ChatGPT Work
- Limits vary a lot by model
| Best for | ChatGPT subscribers who want local and cloud coding agents in one plan |
|---|---|
| Not for | Teams that must avoid any OpenAI account dependency |
| Pricing | Included in ChatGPT Free and Go (limited), Plus ($20/mo), Pro ($100 or $200/mo), Business, Enterprise; or API-key billing |
| Open source | Yes (Apache-2.0 (Codex CLI)) |
| Category | Coding agents |
| Verified | 2026-10-14 |
Alternatives
Anthropic's agentic coding tool for the terminal, IDE and desktop app.
+ Works across terminal, supported IDEs and the Claude desktop app
− Not included on the Free plan
Closed sourcePaidCoding agents
AI-first code editor with an agent that plans and edits across your codebase.
+ Full editor built around agent workflows
− Usage beyond the included pool costs extra
Closed sourceFree optionCoding agents
GitHub's AI pair programmer and coding agent that works from issues to pull requests.
+ Free tier and low-cost Pro
− Agent and chat usage is metered in AI credits
Closed sourceFree optionCoding agents
Autonomous software engineer from Cognition; Windsurf is now Devin Desktop.
+ Delegates whole tasks asynchronously
− Overages billed at model/API pricing
Closed sourceFree optionCoding agents
Related task guides
Sources
- https://chatgpt.com/codex/pricing/
- https://help.openai.com/en/articles/11369540-using-codex-with-your-chatgpt-plan
- https://github.com/openai/codex
Logo used to identify the product; trademarks belong to their owners. Pricing changes often, so confirm on the official site.