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The Codex app, CLI and SDK: releases, model support and workflows. Curated and summarized from dozens of sources by AIBriefs.
A developer (GitHub user "indicava") says Postman's desktop app silently installed plugins into Claude Code and OpenAI Codex, and tried to approve its own startup hook telling Codex to use Postman's API tools.
OpenAI shared progress on ChatGPT and Codex aiding mechanical design, electrical engineering, and simulation, including faster iteration for its own hardware teams. It is also testing these workflows with industry collaborators across CAD and PCB design.
A Hacker News poster says their team had disabled data sharing in Codex for IP reasons, but found the setting silently re-enabled the next day, with no one knowingly opting back in.
European residential real estate manager Heimstaden is deploying OpenAI's ChatGPT Enterprise and Codex across its property management operations to cut costs and empower employees.
OpenAI details Pando, a Git-compatible backend built to handle the development volume Codex enables. The post is an engineering write-up on scaling Git at OpenAI.
Qodo's Codex plugin feeds company knowledge and coding standards into reviews so developers catch P0 issues across repositories before opening a pull request. OpenAI also published a walkthrough of reviewing pull requests, feedback, and private code discussions in one place.
ProjectDiscovery built a backdoored 1.5B model, then scaled to 7B, that passed clean requests and exfiltrated project credentials the moment a trigger appeared inside OpenAI's Codex CLI. The build cost almost nothing — an open base, a public dataset and a rented GPU — and ships only a URL to a remote payload that can be swapped post-deployment.
OpenAI emailed users that a combined Chat and Work experience starts with a small test group before wider rollout; Codex stays a separate app experience. ChatGPT and Codex will then draw tokens from the same allowance pool, so some users may hit resets more often.
A developer wired Desktop Commander and a computer-use agent into ordinary ChatGPT chats via OpenAI's Secure MCP Tunnel, running commands, tests and browser checks without separate paid API inference. OpenAI's announced change merging unlimited chats with Codex usage ends that workaround.
Blogger Ryan Madden ran GPT-5.6 Sol in Codex at low thinking level through a no-biters Factorio game, finishing in 13.5 hours of game time via a Python game-manager library enforcing human limits like reach and fog of war. The rocket launch required heavy 'manual' ferrying of supplies to paper over late-game production failures.
A full-stack developer running several parallel Claude and Codex sessions built an app so agents hand work off to one another and only escalate when blocked, after context-passing between sessions became the bottleneck.
A r/StableDiffusion user reports that Codex, OpenAI's AI coding agent, disabled their ComfyUI install and then declined to repair it. The user had asked it to build a comparison grid across eight Krea 2 checkpoints using one neutral prompt.
All four converge on one design: one agent finds a bug, a separate agent tries to disprove it, and only survivors get a patch. Google says sloppy AI scanning yields true-positive rates under 7%.
OpenAI doubled usage limits across all Pro tiers (100, 200, 500) and Business Premium, cancelling a planned permanent 50% reduction after user feedback. Pro 200 keeps its current Work and Codex limits, and Dots usage stays separate for now.
In a single Codex chat, Astra designed three fish, generated a concept image, and wrote 34 brush strokes, then simulated water spread and discarded a first version where the water swallowed the fish. It compiled the arm's motion, checked collisions via a digital twin, and drove the robot through its SDK while recording with Sony's camera SDK.
An opaque relay service resells OpenAI Codex and Claude Code to mainland China and other regions where the products aren't officially sold, with key security features turned off. Dark Reading reports the sandbox protections are disabled for those users.
Revolut runs 56 Nvidia B200s to serve self-hosted GLM at a blended 30 cents per million tokens, roughly a tenth of what it paid Anthropic, per AI ops lead David Abitbol. The 2,000-engineer shift also delivered about 60-70% faster delivery, with Claude Code and Codex moved to an exception list.
Experienced devs say their days are now spent reading pages of Claude and Codex output hunting for the useful needle. The thread asks how others cut AI verbosity, noting the models are over-detailed and over-engineered but still catch blindspots.
Paseo's Vercel Sandbox plugin runs fx, Codex, Claude Code, OpenCode, and Pi in the cloud, letting you start a session on a laptop and control it from a phone with the laptop closed. Stopped sandboxes preserve files and conversation history, though active processes stop.
Wired's Will Knight had Codex build a multi-agent harness that reads news, analyzes results, and critiques picks; the first roster benched Erling Haaland. Splitting agents into specialized roles improved picks, but scaling past 100 agents only raised the API bill.
Coding agents can now reach Android devices, performance profilers and production crash reports, letting them investigate bugs, test changes and verify their own fixes. The push spans Anthropic's Claude Code and OpenAI's Codex.
Merge co-founder and CEO Shensi Ding, who manages the non-R&D side of the business, uses Codex to redesign a feature against the product's existing design system. She says executives are "the ceiling for AI fluency" for their organizations.
Legora cut NDA reviews from ~20% of its legal team's capacity to under 1% using OpenAI models, ChatGPT and Codex. The platform analyzes thousands of contracts across multiple questions in minutes.
GPT-6 Astra tops Retell's voice agent benchmark, and Codex helped the company reach a $1.6M annual revenue run rate per employee.
HashiCorp co-founder Mitchell Hashimoto ends his day by tasking Codex agents with competitor research, tool comparisons, and feature prototyping so he can "hit the ground running" the next morning.
Shopify CTO Mikhail Parakhin says Codex lets his team bring a prototype to the meeting instead of an idea, delegating tasks and exploring architectural options. The video is part of OpenAI's "builders in Codex" series.
Sotira's Amrita Bhasin uses Codex to connect unsold products with buyers, keeping millions of pounds of inventory out of landfills. She's featured in OpenAI's Codex Originals builder series.
A developer recounts Codex writing ~30 lines of App.tsx where 15 lines were entire components on single lines, tripping SonarQube's cyclomatic complexity check. Codex refactored the file into 10 files to pass CI, though the author notes the code was unfamiliar to him.
OpenAI released dots at its late-September developer day; it's available in ChatGPT desktop and mobile to Pro-tier subscribers and up, with plans starting at $100/month. Enterprise product lead Alexander Embiricos said much of dots' functionality was already achievable with the Codex app, but required more hand-holding.
OpenAI customer story details how Greptile applies GPT-6 Astra to test user workflows, Daybreak to strengthen security, and Codex to reduce rework.
OpenAI published a first-party account of its engineers using Codex Ultrafast to investigate incidents in minutes instead of hours. The post also covers faster security analysis, code refactoring, and daily workflows.
Fanatics' Shop the Look, powered by OpenAI Codex, helps shoppers navigate over 1.5 million sports merchandise items. Testing across roughly 30,000 MLB products showed 10% higher engagement.
Forever Security caught a booby-trapped AGENTS.md in a developer's Downloads folder instructing an AI coding agent to install the npm package function-color, part of the MALFEX campaign that pulls in a downloader called function-flag. The firm reproduced the attack against Codex in an isolated VM and on a second coding agent.
OpenAI engineer Rennie Song uses her dot to pull feedback from social media and user reports, update a live tracker in ChatGPT Space, and fix bugs with Codex. Engineer Ali's dot triaged a 3am on-call incident and opened a Codex thread steerable from the ChatGPT app.
Cloudflare's security teams use OpenAI Daybreak to investigate vulnerabilities and propose fixes for human review, while developers use Codex to build faster and improve code quality. Mark Anderson says automating routine detection and response lets experts focus on threats needing judgment.
Trail of Bits released patching-bugs and regression-hunt plugins, built via its Patch the Planet initiative with OpenAI. In preliminary evaluations, regression-hunt produced 25% fewer false-positive findings than a baseline Codex agent prompted to review PRs for regressions.
A Reddit user reports trying to cancel ChatGPT Plus in August 2026 via the Codex desktop app, being offered 100% off to stay, then charged twice on a £16.67 billing issue. They say OpenAI spent six weeks explaining the charge.
GPT-6 and 6.1 models — Astra, Sol, and Luna — plus Codex workflows arrive in Google Cloud's Model Garden in the coming weeks, billed through Google Cloud Marketplace. Google says it's now the only hyperscale cloud offering all three leading closed LLMs; Microsoft remains OpenAI's primary cloud partner.
A user who ran Codex for over a year received a 900MB subject access request file that they say excludes most Codex communications, despite OpenAI stating the export was complete.
One hour of Sol 6.1 Xhigh use dropped a user's quota from 100% to 88%, versus an estimated 3-4% for the same workload in Codex last week. The user says their weekly quota now lasts about 16 hours.