OpenAI Codex
Codex Free (OpenAI)
Price$0/month
Codex Free is OpenAI’s $0 tier of Codex, offered in the Codex desktop app subject to rollout.
Codex Free limits are not given as a number: OpenAI’s Codex pricing page describes the free tier as a way to “Explore Codex capabilities on quick coding tasks”. It costs nothing and runs in the Codex desktop app, subject to rollout, with GPT-6 Luna at Standard speed as its model. Compare it with Codex Go and Codex Plus.
Usage: “Explore Codex capabilities on quick coding tasks”
Included for coding agents: Codex desktop app (subject to rollout)
Checked against the source on October 5, 2026. Compare it with every other plan in the coding agent plans tracker.
- Usage (vendor's wording)
- "Explore Codex capabilities on quick coding tasks"
- Models in the tool
- GPT-6 Luna at Standard speed in the desktop app, subject to rollout
- Agent features included
- Codex desktop app (subject to rollout)
Questions
Is Codex free?
Yes. OpenAI lists a Free tier of Codex at $0/month in the desktop app, subject to rollout.
What are the Codex Free limits?
OpenAI gives no number; it says the tier lets you “Explore Codex capabilities on quick coding tasks”.
Which model does Codex Free use?
GPT-6 Luna at Standard speed in the desktop app.
Where can I use Codex Free?
In the Codex desktop app, where the tier is subject to rollout.
Sources
OpenAI Codex
View all- Codex API key (OpenAI)Codex with an API key is OpenAI Codex paid for at API pricing, for the CLI, SDK and IDE extension.
- Codex Business (OpenAI)Codex Business is OpenAI’s plan for 2+ users with ChatGPT and Codex, from $20 per user a month.
- Codex Business Premium seat (OpenAI)Codex Business Premium seat is OpenAI’s $100-a-user ChatGPT Business seat with 5x Standard usage.
- Codex Enterprise and Edu (OpenAI)Codex Enterprise and Edu are OpenAI’s Codex plans priced through sales, with everything in Business.