OpenAI
Codex app
Codex app is a coding agent as a desktop app by OpenAI.
72out of 100As of September 30, 2026
Summary
The Codex app is OpenAI's desktop application for Codex and comes with the cloud agent. Press reports give February 2, 2026 as its launch date.
The app runs on macOS, Windows and Linux and, according to OpenAI, uses GPT-6.1 Sol and GPT-6 Luna. You can try it for free; the regular entry is the Go plan at $8 per month.
Popularity
How often the harness is searched for, used and mentioned, compared with every harness in the directory.
The most popular AI harnesses
Popularity index from 0 to 100, higher is more popular.
20 of 31 models
As of November 4, 2026 · Source: gradually.ai popularity index
Over time
Values from February 28, 2026 to September 30, 2026
Codex appWarpKiroDevinPi
Subscriptions with Codex app
Plans from the AI subscription directory that include the harness. Cheapest first.
| Plan | Provider | Price | Checked |
|---|---|---|---|
| ChatGPT Free | OpenAI | free | Sep 29, 2026 |
| ChatGPT Plus | OpenAI | $20.00 | Sep 29, 2026 |
| ChatGPT Business Standard-Platz | OpenAI | $25.00or $20.00/month billed annually | Sep 29, 2026 |
| ChatGPT Pro $100 | OpenAI | $100.00 | Sep 29, 2026 |
| ChatGPT Business Premium-Platz | OpenAI | $125.00or $100.00/month billed annually | Sep 29, 2026 |
| ChatGPT Pro $200 | OpenAI | $200.00 | Sep 29, 2026 |
| ChatGPT Pro $500 | OpenAI | $500.00 | Oct 8, 2026 |
| ChatGPT Enterprise Enterprise | OpenAI | on request | Sep 29, 2026 |
Changelog
Every update and new release of Codex app is in the changelog.
Sources
Every fact on this profile rests on one of these sources. The date is the day the source was read.
| Source | Backs | Read on |
|---|---|---|
| 9to5mac.com/2026/02/02/openai-launches-codex-app-fo… | Launch date | November 5, 2026 |
| learn.chatgpt.com/docs/pricing | Entry price, Models | November 5, 2026 |
| learn.chatgpt.com/docs/app | Platforms, Website | November 5, 2026 |
| learn.chatgpt.com/docs/app/windows | Platforms | November 5, 2026 |