#codex

A front-page Hacker News discussion around Astral joining OpenAI captured both optimism about better AI-native Python tooling and concern about further consolidation of the developer stack.

A March 19, 2026 Hacker News post about Astral joining OpenAI reached 707 points and 445 comments at crawl time. Astral says it has agreed to join OpenAI as part of the Codex team while continuing to support Ruff, uv, and ty as open-source tools.

OpenAIDevs said on March 16, 2026 that subagents are now available in Codex. The feature lets developers keep the main context clean, split work across specialized agents, and steer individual threads as they run, while the official docs already describe PR review and CSV batch fan-out patterns.

OpenAI says Codex Automations are generally available and now expose controls for model choice, reasoning level, branch strategy, and reusable templates. The update pushes Codex from ad hoc sessions toward repeatable background workflows for software teams.

GitHub said on February 26, 2026 that Claude by Anthropic and OpenAI Codex are now available as coding agents for Copilot Business and Copilot Pro customers. The release brings multi-agent choice into github.com, GitHub Mobile, and VS Code without requiring an extra subscription.

OpenAI has put Codex Security into research preview, extending its agent stack into repository scanning, bug reproduction, threat analysis, and remediation. The company says the system sharply reduced review noise and false positives in internal evaluations.

OpenAI Developers said on March 6, 2026 that Codex Security is now in research preview. The product connects to GitHub repositories, builds a threat model, validates potential issues in isolation, and proposes patches for human review.

OpenAI announced Codex for Open Source on March 6, 2026, pitching the program as practical support for maintainers who review code, manage large repositories, and handle security work. The program combines API credits, six months of ChatGPT Pro with Codex, and conditional Codex Security access for eligible projects.

OpenAI reposted a thread announcing Codex integration into Prism, positioning it as a single environment for writing, computation, analysis, and iteration. The update points to tighter workflows for research-oriented knowledge work.

OpenAIDevs said Codex now supports a /fast mode where GPT-5.4 runs 1.5x faster while keeping the same intelligence and reasoning profile. The update targets faster coding iteration and debugging loops for developer workflows.

OpenAI announced that GPT-5.4 Thinking and GPT-5.4 Pro are rolling out in ChatGPT, while GPT-5.4 is already available in the API and Codex. The launch positions GPT-5.4 as a unified frontier model for reasoning, coding, and agentic workflows.

OpenAI Developers posted that the Codex app is now available on Windows with a native agent sandbox and PowerShell-oriented developer environment support. The update extends Codex usage beyond previous desktop workflows and signals deeper Windows integration for agentic coding tasks.