OpenAI Codex

Evidence (18)

• 4Hacker News·7/28/2026security
  Codex Security

  This Hacker News item points to OpenAI's Codex Security repository, which appears to focus on security-related information for Codex. The discussion suggests interest in how OpenAI is documenting or handling security considerations around its coding tool.

• 4Hacker News·7/19/2026framework_update
  OpenAI cuts Codex model context window from 372k to 272k

  OpenAI updated Codex to use a smaller model context size, reducing the window from 372k to 272k tokens. The change appears in a GitHub pull request and has drawn discussion on Hacker News about the tradeoff between context length, cost, and performance.

• 4Hacker News·7/18/2026product_launch
  OpenAI Codex Usage Limits Reset Tracker

  This Hacker News post tracks repeated resets of OpenAI Codex usage limits, apparently announced ad hoc by OpenAI staff on X. The log shows frequent resets tied to user milestones, reliability issues, and infrastructure scaling as Codex and ChatGPT Work usage grows.

• 3Hacker News·7/15/2026open_source
  Brainless releases shadcn components styled like Claude Code, Codex, and Grok

  The post showcases Brainless, a set of shadcn components that mimic the interfaces of Claude Code, OpenAI Codex, and Grok. The examples are presented as reusable UI blocks for adding agent-style experiences to web apps, including pricing and command-driven workflows. The item is primarily a UI/component release rather than a new model or platform.

• 7Hacker News·7/15/2026product_launch
  Codex Micro Launches

  OpenAI introduced Codex Micro, a smaller Codex offering aimed at making code generation and software assistance more accessible. The announcement drew substantial discussion on Hacker News, suggesting strong interest in its positioning and capabilities.

• 4Ars Technica AI·7/15/2026product_launch
  OpenAI launches Codex Micro keyboard for agent monitoring

  OpenAI is releasing its first branded hardware, the $230 Codex Micro, a limited-run mini-keyboard made with Work Louder. It uses RGB-lit keys to show the status of up to six Codex agent threads and lets users jump to a task with a tap.

• 8The New Stack·7/14/2026product_launch
  OpenAI Codex reaches 8 million users after ChatGPT integration

  OpenAI says combined usage of Codex and ChatGPT Work may have reached 8 million users after the launch of GPT-5.6 and the unification of Codex into the ChatGPT desktop app. The rollout exposed scaling and billing issues, prompting changes to context limits, reasoning settings, and usage caps as competitors also adjusted their pricing and limits.

• 6Hacker News·7/14/2026security
  Codex encrypts sub-agent prompts

  OpenAI Codex is reportedly changing how it handles sub-agent prompts by encrypting them. The update appears aimed at improving privacy or reducing exposure of internal prompt data within the agent workflow.

• 5The New Stack·7/1/2026product_launch
  OpenClaw’s app uses a persistent AI agent instead of running on-device

  OpenClaw has released iOS and Android apps that let users interact directly with a personal AI agent, but the agent itself runs in a separate persistent runtime rather than on the phone. The design turns the phone into an authenticated endpoint for voice, notifications, camera access, and action approval, reflecting a broader industry shift toward distributed agent architectures.

• 6Hacker News·6/28/2026security
  OpenAI Codex issue on excluding sensitive files remains open

  An open GitHub issue says OpenAI Codex still lacks a reliable way to exclude sensitive files from its workflow. The discussion has drawn significant attention on Hacker News because the gap affects developer safety and repository hygiene when using the tool.

• 4Hacker News·6/27/2026open_source
  Adrafinil keeps a Mac awake only while AI agents are active

  Adrafinil is an open-source macOS app designed to keep a MacBook awake with the lid closed only while connected agents are actively working. It integrates with tools such as Claude Code and Codex, automatically re-enables sleep when work finishes, and includes safeguards for overheating and manual control via MCP.

• 7The New Stack·6/27/2026product_launch
  Agent Tools Shift to Runtime Code Verification

  The article says agentic coding tools are increasingly running the code they generate at runtime instead of relying only on static review or unit tests. It argues this improves verification, but current sandboxes often fall short for cloud-native systems because they do not fully reflect real production interactions.

• 6The New Stack·6/25/2026product_launch
  Codeplain backs spec-driven development with new open-source agent framework

  Codeplain says AI-era software should be maintained by updating specifications and regenerating code, rather than reviewing and editing code directly. The company also launched plain-forge, an open-source framework that lets coding agents draft and maintain Plain specs through conversation, and said it has raised $3 million in funding to date.

• 3OpenAI Blog·6/22/2026product_launch
  Using Codex for long-running tasks

  OpenAI highlights how Jason Liu uses Codex to preserve context across extended work and manage complex projects beyond a single prompt. The article focuses on practical workflow patterns for keeping progress moving when tasks span multiple steps or sessions.

• 8OpenAI Blog·6/21/2026product_launch
  Samsung deploys ChatGPT Enterprise and Codex to employees

  Samsung Electronics is rolling out ChatGPT Enterprise and Codex to employees worldwide. The deployment is one of OpenAI’s largest enterprise AI implementations to date and is aimed at broad internal use across the company.

• 4OpenAI Blog·6/11/2026research
  Astrophysicist Uses Codex for Black Hole Simulations

  OpenAI highlights how astrophysicist Chi-kwan Chan uses Codex to build and improve black hole simulation code. The work supports research into extreme physics and helps scientists test Einstein’s theory of general relativity.

• 7OpenAI Blog·6/11/2026funding
  OpenAI to acquire Ona for persistent cloud environments

  OpenAI plans to acquire Ona to add secure, persistent cloud environments to Codex. The move is intended to support long-running AI agents in enterprise workflows.

• 7OpenAI Blog·6/10/2026product_launch
  OpenAI models and Codex available through Oracle Cloud commitments

  OpenAI announced that customers can access its models and Codex through Oracle Cloud using existing cloud commitments. The integration is positioned for enterprise use, with security and governance controls for building and deploying AI applications.