Codex
OpenAI · Coding
Global ActiveFree tier
01
Overview
Codex is OpenAI's coding agent, included in ChatGPT plans, that reads, writes and runs code via the web, CLI, IDE extension and desktop app.
02 / Provenance
Field checks and source notes
When sources disagree on a field, every reading is listed here with its own citation. We do not take a midpoint, invent a missing figure, or decide which side is right — follow the citation and judge for your case.
These field-level notes are recorded verbatim in Chinese in the source data. Open the Chinese version
03
Agent fields
| Field | Value |
|---|---|
| Group | Coding |
| Runtime form | web / cli / ide_plugin / desktop / api |
| Open source | Closed source |
| Self-hostable | Not disclosed |
| License | Not disclosed |
| Free tier | Free at $0: quick coding tasks inside the desktop app (GPT-6 Luna, standard speed, subject to rollout). |
| Paid plans from | Plus $20/month |
| Price checked | — |
| Underlying model support | Not disclosed |
| Target users | Not disclosed |
| Headquarters | United States |
05
Change log
- GPT-5.5 从以 ChatGPT 登录的 Codex 中退役