Codex Articles
39 articles across AI Catchup's news, guides, tutorials, and comparisons.
All Codex articles
GPT-Rosalind Leaves Research Preview for Eligible Organizations Worldwide
GPT-Rosalind, OpenAI's purpose-built life sciences reasoning model, is out of research preview for eligible organizations worldwide through OpenAI's trusted-access program. OpenAI says qualified customers can use it in the API, Codex, and ChatGPT Enterprise, while a Life Sciences research plugin connects Codex to more than 50 public tools and data sources. Published pricing takes effect October 5, 2026.
OpenAI Opens Its Codex-Powered Agents API to All Developers in Public Beta
OpenAI's Agents API is now in public beta for all developers. The managed service uses the Codex harness to run long-lived cloud agents, coordinate parallel subagents, compact context across long sessions, and work in OpenAI-hosted, VPC, or partner-provided sandboxes.
OpenAI Shares a Defense Factory Playbook for Agentic Cyber Defense
OpenAI is sharing a Defense Factory playbook that connects security tools, skills, reproducible environments, and agents into a continuous loop for discovering, validating, assigning, remediating, and independently verifying vulnerabilities.
OpenAI Says GPT-6 Astra Now Uses Less ChatGPT Subscription Usage on Long Tasks
OpenAI executive Tibo says recent improvements to GPT-6 Astra reduce the subscription usage drawn by long-tail work for power users signed in with a ChatGPT account. The approved announcement claims up to 3–4x less usage and says there is no change in quality, but it does not publish implementation details, a new quota, or an API billing change.
ChatGPT Appshots Bring Your Mac's Frontmost App Into a Chat
OpenAI's Appshots feature lets ChatGPT users on macOS send the frontmost app window to a chat. An appshot can include the visible image and available text, making it possible to hand ChatGPT context from an API reference, email, error panel, or other app without describing it manually.
ChatGPT Workspaces Can Sync GitHub Plugin Marketplaces Daily
ChatGPT workspace admins and owners can now import plugin marketplaces from public or private GitHub repositories and keep them synchronized automatically. The feature gives teams a central way to distribute Codex and Claude-compatible plugins while keeping installation policies and app permissions under workspace control.
OpenAI Plans to End Direct Cursor Model Access on November 12
OpenAI plans to end Cursor's direct access to OpenAI models, with November 12, 2026 proposed and not yet confirmed. You are affected only if you pick OpenAI models inside Cursor, which Cursor says is about 5% of its traffic. Local Chat and Agent can keep OpenAI through your own API key or the Codex extension; Tab, Auto, Cloud Agents and automations cannot.
ChatGPT Business Premium Seats Are Live: 5x More Usage and No Five-Hour Limit
OpenAI has made Premium seats available on ChatGPT Business. Premium seats cost $100 per user per month when billed annually or $125 monthly, provide 5x more usage than Standard seats, remove the five-hour usage limit, and can be mixed with Standard seats in one workspace.
ChatGPT Voice Can Start and Steer Codex Tasks on Desktop, With Mobile Remote Access
ChatGPT Voice now provides a hands-free way to start, monitor, and steer Codex work. OpenAI says Voice can coordinate Codex tasks in the ChatGPT desktop app, while mobile access is available through Remote on iOS after pairing an iPhone with a desktop host. Voice conversations use the Codex task’s usage budget and require a new chat or task to begin in voice mode.
Codex Opens GPT-5.6 Sol's 1M-Token Context to ChatGPT Accounts
GPT-5.6 Sol's 1M-token context window in Codex is now available for usage through ChatGPT accounts, not only API keys, according to OpenAI developer Tibo Sottiaux. The announcement also repeats a warning that Codex's default context length is tuned for performance and cost.
OpenAI Launches Computer History for ChatGPT and Codex on Mac
OpenAI is rolling out Computer History in the ChatGPT desktop app for macOS. When users opt in, ChatGPT and Codex can use recent interaction events to build local memories and a timeline, answer questions about past work, and suggest skills or automations. The feature is off by default and includes app and website permissions, pause and delete controls, and a 48-hour temporary event-file window.
ChatGPT Desktop App Arrives on Linux in Preview
OpenAI is previewing the ChatGPT desktop app for Linux. The app brings ChatGPT, ChatGPT Work, and Codex to supported Linux systems, with official posts listing Ubuntu 24.04 and 26.04, Debian 13, and Fedora 43 and 44, plus .deb and .rpm packages for x64 and ARM64.
Codex Can Import Workflows From Other AI Agents
OpenAI now lets the ChatGPT desktop app and Codex CLI import supported setup and recent work from other agents. The desktop app can import from Claude Code, Claude Cowork, and Cursor, while Codex CLI supports Claude Code and Cursor, with automatic updates and import history available in the desktop app.
OpenAI Expands Daybreak With GPT-5.6-Cyber
OpenAI expanded its Daybreak cybersecurity program with Blue and Red access tiers and introduced GPT-5.6-Cyber, a purpose-trained model for authorized vulnerability research, exploit validation, and security testing. Access is limited to approved defenders and organizations.
OpenAI Resets ChatGPT Work And Codex Limits For Paid Users
OpenAI executive Tibo announced usage resets for paid ChatGPT Work and Codex users on August 8 and August 29, 2026, then posted that a global reset would be made for all paid subscriptions on September 7. The approved posts do not publish a numeric allowance, a new API billing rule, or a new recurring reset schedule.
OpenAI Brings Codex Security Review to GitHub Pull Requests
Codex Security Review is OpenAI’s research-preview workflow for deeper security analysis of GitHub pull requests. It uses the diff, repository context, and optional threat-model guidance, then reports actionable findings in the pull request and a fuller report in Codex. Enterprise, Business, Edu, and Pro users can configure it; Plus is excluded.
GPT-5.4 Left ChatGPT-Signed-In Codex on August 31, 2026
OpenAI said GPT-5.4 and GPT-5.4 mini would stop being available in Codex for users signed in with ChatGPT on August 31, 2026, and that date has now passed. The models remain available through the OpenAI API and Codex sessions authenticated with an API key, confirmed September 1, 2026. Recommended replacements: GPT-5.6 Terra and GPT-5.6 Luna.
OpenAI Releases Codex Security CLI for Repository Scans and CI Checks
OpenAI says its open-source Codex Security CLI can scan repositories, track findings across runs, verify fixes, and add security checks to CI/CD. The beta CLI requires Codex Security access and is built for teams that want code-aware security review in the terminal.
Codex ImageGen Adds a Lightbox + Canvas Workflow for Image Editing on Desktop
OpenAI Developers announced a new ImageGen workflow in Codex: a lightbox viewer and a canvas-style editing surface designed for direct, point-and-edit changes (erase, annotate, place text) instead of long prompt rewrites.
OpenAI Cuts GPT-5.6 Prices and Renames Priority Processing to Fast Mode
OpenAI reduced GPT-5.6 Luna pricing by 80% and Terra by 20%, then announced temporary GPT-5.6 Sol API and credit pricing relief for the next three months. OpenAI also renamed Priority processing to Fast mode and updated its pricing guidance for the GPT-5.6 family.
OpenAI Launches ChatGPT Work: A Codex-Sibling Agent for Long-Running Deliverables
OpenAI introduced ChatGPT Work, a new agent in ChatGPT powered by Codex and GPT-5.6 that takes action across apps and files and stays on a project for hours to turn a goal into finished work. Work handles research and deliverables; Codex stays the dedicated software-development agent.
Codex Permission Profiles: Least-Privilege Controls for Local Agent Work
OpenAI shipped Codex permission profiles in beta -- reusable, inheritable policies that replace the coarse sandbox_mode/sandbox_workspace_write combo. A profile binds OS-enforced filesystem read/write/deny rules (down to **/*.env) to per-domain network and Unix-socket rules. Enterprise admins get fail-closed allowlists via requirements.toml. Profiles govern local sandboxed command execution only, not MCP servers, app connectors, browser, or cloud.
OpenAI Previews GPT-5.6: Sol, Terra, and Luna in Limited Preview
OpenAI announced a limited preview of the GPT-5.6 family: Sol, a next-generation frontier flagship OpenAI calls a step function better than GPT-5.5; Terra, a balanced model competitive with GPT-5.5 at 2x lower cost; and Luna, its most cost-efficient model. Access starts with trusted partners in Codex and the API.
OpenAI Codex Adds Record & Replay: Turn a Demonstrated Mac Workflow Into a Reusable Skill
OpenAI shipped Record & Replay in Codex app 26.616, a macOS feature that turns a workflow you demonstrate into a reusable skill. It builds on Computer Use, which you or your administrator must enable, and is unavailable at launch in the European Economic Area, the United Kingdom, and Switzerland.
Codex for Every Role: Role-Specific Plugins, Codex Sites, and Annotations Beyond Code
OpenAI is pushing Codex past software development with three releases: six role-specific plugins bundling 62 apps and 110 skills, Codex Sites that turn analysis into shareable hosted web apps in preview for business and enterprise, and annotations that now refine documents, spreadsheets, and presentations -- not just code and websites.
Codex Build iOS Apps Plugin: Mirror the Simulator in the Browser and Hot-Reload SwiftUI Previews
OpenAI's Build iOS Apps plugin for Codex bundles nine iOS and Swift skills. The June 2026 addition mirrors the iOS Simulator into the Codex in-app browser and hot-reloads Swift Package-backed SwiftUI previews. XcodeBuildMCP handles simulator build, run, and debug. It installs from the /plugins browser in Codex CLI or the Plugins tab in the ChatGPT desktop app.
Codex Adds Windows Computer Use + ChatGPT Mobile Windows Connections for On-the-Go Steering
OpenAI says Codex can now use Computer use on Windows to test apps, debug flows, and review work on your Windows machine, and that Codex in the ChatGPT mobile app can connect to Windows machines so you can steer tasks from your phone.
OpenAI's Secure MCP Tunnel: Connect Private MCP Servers Over Outbound-Only HTTPS
OpenAI's Secure MCP Tunnel connects private and on-prem MCP servers to ChatGPT, Codex, and the Responses API without opening inbound firewall ports. You need a tunnel_id, an API key with Tunnels Read plus Use, and -- separately -- ChatGPT developer-mode access. That permission split is the most common setup blocker.
OpenAI Codex adds Locked computer use on Mac (keep Computer Use running after lock)
Codex can now keep using Mac apps after your screen locks. Locked computer use is a narrow, Codex-only unlock path with a short-lived authorization window and safeguards like relocking on local input.
Codex in the ChatGPT Mobile App: Run, Review, and Steer Codex from Your Phone
Yes, you can drive Codex from your phone. The ChatGPT mobile app on iOS and Android connects to a host running the ChatGPT desktop app on macOS or Windows, and from the phone you start work, review diffs and terminal output, and approve actions. Codex still executes on the host, which must stay awake and online.
Codex Chrome Extension: How Codex Drives a Signed-In Browser for LinkedIn, Salesforce, Gmail, and Internal Tools
OpenAI's Codex Chrome extension lets the agent use Chrome for browser tasks that need signed-in state -- LinkedIn, Salesforce, Gmail, internal tools. Available in the Codex app in all regions except EU and UK at launch. Setup is Codex > Plugins > add Chrome > install extension > approve permissions. Invoke with @Chrome. By default Codex asks before each new website; allowlist/blocklist and elevated-risk options live in Computer Use settings.
Codex Hooks and Programmatic Access Tokens: Setup, Trust Model, and What Actually Runs Today
Codex access tokens are ChatGPT Business and Enterprise workspace credentials for non-interactive Codex CLI runs. Create one at chatgpt.com/admin/access-tokens, then authenticate with CODEX_ACCESS_TOKEN or codex login --with-access-token. Hooks are the in-session extensibility framework: eleven lifecycle events. As of August 2026, command and mcp_tool handlers execute; at launch only command handlers did.
Codex CLI 0.130.0 Adds `remote-control`, Richer Plugin Sharing Metadata, and Better App-Server Thread Paging
OpenAI shipped Codex CLI 0.130.0 in May 2026. The release adds a new `codex remote-control` command for starting a headless, remotely controllable app-server, improves app-server clients with paging options for large threads (unloaded/summary/full turn items), expands plugin sharing with link metadata and discoverability controls, adds Bedrock auth support for AWS console-login credentials from `aws login` profiles, and fixes several app-server/thread reliability issues.
Codex CLI 0.129.0 Adds Modal Vim Composer, Redesigned Resume/Fork Picker, and a `/hooks` Browser
OpenAI shipped Codex CLI 0.129.0 on May 7, 2026. The release brings modal Vim editing to the TUI composer via `/vim`, a redesigned resume/fork picker, a raw scrollback mode, workspace-aware `/diff`, a new `/hooks` browser with before/after compaction support, expanded plugin management with workspace sharing and share access controls, theme-aware status lines, and Codex Apps auth surfaced through Guardian. Plus a long bug-fix list across Linux/Windows sandboxes, MCP, and TUI input handling.
Codex CLI 0.128.0 Lands Persisted `/goal` Workflows: Ralph-Style Agents That Don't Stop Until Done
OpenAI shipped Codex CLI 0.128.0 on April 30, 2026 with a persisted `/goal` system that keeps a goal alive across turns and runs the agent until it is achieved. As of September 2026 the feature is stable and on by default (`features.goals`, no config change needed), Goal mode left experimental status on May 21, 2026, and the `/goal` command is documented with set, view, edit, pause, resume, and clear subcommands. The five goal PRs in the release were authored by Eric Traut.
GPT-5.5 Is Here: State-of-the-Art Agentic Coding, 1M Context, and a New Pro Tier
OpenAI launched GPT-5.5 on April 23, 2026 -- its smartest model yet, with state-of-the-art scores on Terminal-Bench 2.0 (82.7%), GDPval (84.9%), and OSWorld-Verified (78.7%), GPT-5.4 per-token latency, and a new GPT-5.5 Pro tier for harder work. As of August 2026 it is generally available in the API at $5/M input and $30/M output, with a 1,050,000-token context window.
OpenAI Codex Goes 'For Almost Everything': Mac Computer Use, Browser Comment Mode, and Thread Automations Explained
OpenAI shipped a major Codex update on April 16, 2026 that pushes the product past coding into general work. Three changes matter: Codex can now drive your Mac apps directly, an in-app browser captures both screenshots and DOM elements through 'comment mode', and Codex threads can run continuously to watch Slack, email, and PRs. Here is how each works, the workflows that justify each one, and where Codex now sits relative to Perplexity Personal Computer and Claude Code Routines.
Codex CLI vs Claude Code vs Cursor: 2026 Architecture Deep-Dive (Sandboxing, Context, Plugins, Scheduling)
Codex CLI, Claude Code, and Cursor all reach for the same outcome -- an AI agent that ships code -- with three different architectures. Codex enforces safety at the OS kernel layer. Claude Code uses application-layer hooks for programmable governance. Cursor builds the agent into a visual IDE with a marketplace of plugins. The right one depends less on which model you prefer and more on which architecture matches your security posture, your composition needs, and your team shape.
Perplexity Personal Computer vs OpenAI Codex Computer Use vs Claude Computer Use: Which AI Should Run Your Mac?
Perplexity Personal Computer is the right pick if you want an always-on Mac mini agent and you already pay for Perplexity Max. OpenAI Codex Computer Use is the right pick if you live in ChatGPT and need one agent driving your code, your browser, and your desktop apps on either macOS or Windows. Claude Computer Use is the right pick if you want raw computer use through the API on any OS, or the built-in version in Claude Code and Claude Desktop on macOS or Windows with a Pro or Max plan, as of September 2026.