OpenAI Codex
A coding agent from OpenAI that runs locally on your computer
OpenAI's coding agent. Codex CLI runs locally in a terminal; the same agent is available as an IDE extension, a desktop app, and Codex Web, a cloud-based agent. It is used through a ChatGPT plan or an API key.Editorial
github.com
github.com/openai/codex README: "Codex CLI is a coding agent from OpenAI that runs locally on your computer." It points to the IDE install, the desktop app ("run codex app"), and "Codex Web" at chatgpt.com/codex.
https://github.com/openai/codex ↗github.com
README: "If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE."
https://github.com/openai/codex ↗github.com
README: "We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan." "You can also use Codex with an API key".
https://github.com/openai/codex ↗Pricing
USD · list price · monthly billing unless notedNo price for OpenAI Codex has been verified yet.
11 logged changes over 539 days, verified 6 days ago.
- 3 verified changes · 30d
- 5 active days · 90d
- 2 kinds of change: releases, availability & platforms
- Latest change 11 days ago
- Recent active days · weight 70
- 57.2 / 70
- Kinds of change · weight 30
- 13.6 / 30
- 30 Oct 202635
- 31 Oct 202635
- 1 Nov 202676
- 2 Nov 202675
- 3 Nov 202674
- 4 Nov 202673
- 5 Nov 202672
- 6 Nov 202671
Recorded daily since 11 Oct 2026; earlier values are never reconstructed.
- Release
GPT-6.1 Terra becomes available in Codex
GPT-6.1 Terra, a fast model with image understanding and computer use, becomes available in Codex and ChatGPT Work on Plus, Pro, Business, Enterprise and Edu plans.
developers.openai.com
ObservedHigh confidencePublished 26 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Availability
GPT-5.5 retires from Codex for ChatGPT sign-ins
GPT-5.5 is removed from Codex for users signed in with ChatGPT; API-key sessions and the OpenAI API are unaffected, and users are pointed to GPT-6.1 Sol.
developers.openai.com
ObservedHigh confidencePublished 14 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Release
GPT-6.1 Sol Ultrafast arrives in Codex for Pro $500 and eligible Enterprise and Edu
An Ultrafast mode speeds up GPT-6.1 Sol token generation in Codex, limited to the Pro $500 plan and eligible Enterprise and Edu plans (off by default for Enterprise).
developers.openai.com
ObservedHigh confidencePublished 8 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Release
Codex CLI 0.160 adds opt-in Guardian review context and task history browsing
Browse older tasks in the agent command center, start sessions outside a project with workspace defaults, and opt in to Guardian review capabilities that include context from agent handoffs.
github.com
ObservedHigh confidencePublished 1 Oct 2026OpenAI Codex — GitHub releaseshttps://github.com/openai/codex/releases/tag/rust-v0.160.0 ↗ - Release
Codex CLI 0.159 lets new input steer Codex mid-response
Opt-in instant_interrupt lets new input steer Codex during model responses or long-running code-mode calls; new sessions get a compact welcome screen.
github.com
ObservedHigh confidencePublished 29 Sept 2026OpenAI Codex — GitHub releaseshttps://github.com/openai/codex/releases/tag/rust-v0.159.0 ↗
- Recent changes
- 3 verified changes in the last 30 days · 0 in 7 · 5 in 90. Latest 26 Oct 2026 (11 days ago).
- 7d (evidence for recent changes)30d (evidence for recent changes)90d (evidence for recent changes)Latest (evidence for recent changes)
- vs segment · 30d
- More than the Coding agents median of 0.5 per tool.
- OpenAI Codex (evidence for vs segment · 30d)Coding agents (evidence for vs segment · 30d)
- List price
- No price has been verified.
- Release
GPT-6.1 Terra becomes available in Codex
GPT-6.1 Terra, a fast model with image understanding and computer use, becomes available in Codex and ChatGPT Work on Plus, Pro, Business, Enterprise and Edu plans.
developers.openai.com
ObservedHigh confidencePublished 26 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Availability
GPT-5.5 retires from Codex for ChatGPT sign-ins
GPT-5.5 is removed from Codex for users signed in with ChatGPT; API-key sessions and the OpenAI API are unaffected, and users are pointed to GPT-6.1 Sol.
developers.openai.com
ObservedHigh confidencePublished 14 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Release
GPT-6.1 Sol Ultrafast arrives in Codex for Pro $500 and eligible Enterprise and Edu
An Ultrafast mode speeds up GPT-6.1 Sol token generation in Codex, limited to the Pro $500 plan and eligible Enterprise and Edu plans (off by default for Enterprise).
developers.openai.com
ObservedHigh confidencePublished 8 Oct 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Release
Codex CLI 0.160 adds opt-in Guardian review context and task history browsing
Browse older tasks in the agent command center, start sessions outside a project with workspace defaults, and opt in to Guardian review capabilities that include context from agent handoffs.
github.com
ObservedHigh confidencePublished 1 Oct 2026OpenAI Codex — GitHub releaseshttps://github.com/openai/codex/releases/tag/rust-v0.160.0 ↗ - Release
Codex CLI 0.159 lets new input steer Codex mid-response
Opt-in instant_interrupt lets new input steer Codex during model responses or long-running code-mode calls; new sessions get a compact welcome screen.
github.com
ObservedHigh confidencePublished 29 Sept 2026OpenAI Codex — GitHub releaseshttps://github.com/openai/codex/releases/tag/rust-v0.159.0 ↗ - Release
OpenAI launches the Codex desktop app for macOS
The Codex app is a macOS desktop interface for running parallel agent threads with worktrees, Git tooling, skills and automations.
developers.openai.com
ObservedHigh confidencePublished 2 Feb 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Plans
Codex opens to ChatGPT Free and Go and doubles paid rate limits
For a limited time, Free and Go plans include Codex and paid plans get double rate limits across app, CLI, IDE and cloud.
developers.openai.com
ObservedHigh confidencePublished 2 Feb 2026OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Pricing
Codex adds on-demand credits for ChatGPT Plus and Pro
Plus and Pro users can buy on-demand credits for Codex usage beyond their plan's included limits.
developers.openai.com
ObservedHigh confidencePublished 30 Oct 2025OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Availability
Codex becomes generally available
Codex reached general availability, adding @Codex in Slack, the Codex SDK and new admin tools.
developers.openai.com
ObservedHigh confidencePublished 6 Oct 2025OpenAI Codex — changeloghttps://developers.openai.com/codex/changelog ↗ - Availability
Codex becomes available to ChatGPT Plus users
OpenAI extended Codex to ChatGPT Plus subscribers and added optional internet access during tasks.
openai.com
ObservedHigh confidencePublished 3 Jun 2025OpenAI — bloghttps://openai.com/index/introducing-codex/ ↗ - Release
OpenAI launches Codex cloud agent research preview
OpenAI introduced Codex, a cloud software engineering agent powered by codex-1, initially for ChatGPT Pro, Business and Enterprise users.
openai.com
ObservedHigh confidencePublished 16 May 2025OpenAI — bloghttps://openai.com/index/introducing-codex/ ↗
Verification log2 days with observations · 8 fact and 0 price observations
- 31 Oct 20262 facts verified
- 2 Oct 20266 facts verified
A verification re-reads a first-party page. It refreshes freshness and is listed here; only a dated, sourced event becomes a change.
Evidence
6/9 facts verified · 5 sourcesFacts ledger
github.com
github.com/openai/codex README: "Codex CLI is a coding agent from OpenAI that runs locally on your computer." It points to the IDE install, the desktop app ("run codex app"), and "Codex Web" at chatgpt.com/codex.
https://github.com/openai/codex ↗github.com
README: "Run the following on Mac or Linux to install Codex CLI" and "Run the following on Windows to install Codex CLI".
https://github.com/openai/codex ↗github.com
README: "If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE."
https://github.com/openai/codex ↗github.com
README: "We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan." "You can also use Codex with an API key".
https://github.com/openai/codex ↗github.com
README links "Codex Documentation" to developers.openai.com/codex.
https://github.com/openai/codex ↗github.com
Codex release notes are published as GitHub releases of openai/codex.
https://github.com/openai/codex/releases ↗github.com
README: "This repository is licensed under the Apache-2.0 License."; "Codex CLI is a coding agent from OpenAI that runs locally on your computer."; "If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex".
https://github.com/openai/codex ↗github.com
OpenAI's public repository for the Codex CLI.
https://github.com/openai/codex ↗Sources · first-party pages read for this record
| Source | Type | Backs |
|---|---|---|
| OpenAI Codex — changelogdevelopers.openai.com/codex/changelog | official docs | 7 |
| OpenAI Codex — official repository READMEgithub.com/openai/codex | github | 5 |
| OpenAI Codex — GitHub releasesgithub.com/openai/codex/releases | github | 3 |
| OpenAI — blogopenai.com/index/introducing-codex | official site | 2 |
| OpenAI Codex — official repositorygithub.com/openai/codex | github | 2 |
Found an outdated fact? Suggest an update with the source that shows it — every update is reviewed before it can change the record.
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