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Codex has been updated to enhance its capabilities for over 3 million weekly developers, enabling it to operate computers, interact with various tools and apps, generate images, and remember user preferences. The update also includes improved support for developer workflows, allowing Codex to handle ongoing and repeatable tasks.

GPT-5.3-Codex-Spark is a new model optimized for real-time coding, capable of processing over 1000 tokens per second on ultra-low latency hardware. This model is a smaller version of GPT-5.3-Codex and represents the first milestone in a partnership with Cerebras.

The Codex app for macOS allows users to manage multiple agents, run tasks in parallel, and collaborate on long-running projects. Codex is available for free with ChatGPT Free and Go, and rate limits are doubled for Plus, Pro, Business, Enterprise, and Edu plans.

OpenAI Codex Security provides a CLI and TypeScript SDK for identifying, validating, and fixing security vulnerabilities in code. It supports scanning repositories, reviewing changes, tracking findings over time, and running security checks in continuous integration environments, requiring Node.js 22 or later and Python 3.10 or later.

Codex in ChatGPT enables AI coding agents to perform tasks such as building features, complex refactors, and migrations using OpenAI's advanced coding models. It supports multi-agent workflows with built-in worktrees and cloud environments, allowing agents to work in parallel across projects.

Codex was utilized to achieve a 232x faster kernel for the qr_v2 problem in GPU mode. The implementation involved optimizing the blocked Householder algorithm and introducing idea diversity to enhance performance.

Encrypted MultiAgentV2 messages in Codex CLI versions post-0.137.0 eliminate a readable task audit trail. This change results from the implementation of message payload encryption merged on June 5, 2026.

Frequent interaction with LLMs can lead to burnout, even with average usage rates. Users may engage with models like Claude Code and Codex for coding tasks while actively reviewing and revising outputs.

@haider1 Ultra will be in codex. Tibo@thsottiaux返信先: @haider1さんUltra will be in codex.0:54 · 2026年7月6日15.4万再生数89891051052.2K2.2K8282既読: 89 件の返信

Backporting refreshed bundled model metadata to version 0.144 is proposed in a pull request. Suggestions cannot be applied while the pull request is closed, and multiple suggestions cannot be batched if they involve deleted lines or subsets of changes.