OpenAI is rolling out Codex Security, an AI-powered application security agent that finds, validates and proposes fixes for ...

Sam Altman says ChatGPT Codex subagents outperform Claude Code, using plain-language triggers and configurable agent files for PR reviews and debugging workflows.

OpenAI launches Codex Security AI agent that scanned 1.2M commits, finding 792 critical and 10,561 high-severity vulnerabilities in open-source projec ...

The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some ...

OpenAI’s Codex Security enters research preview, aiming to help teams find, validate, and patch code vulnerabilities with ...

OpenAI has introduced GPT-5.4 Mini and Nano models for free users. OpenAI says its new Mini model excels in tasks like coding and reasoning, while Nano model focuses on speed and affordability ...

Anthropic, a smaller rival started by OpenAI defectors, has found runaway success with its programming agent, Claude Code.

The latest GPT-5.4 mini model delivers benchmark results surprisingly close to the full GPT-5.4 model while running much faster, signaling a shift toward smaller AI models powering real-world ...

OpenAI Group PBC and Mistral AI SAS today introduced new artificial intelligence models optimized for cost-sensitive use cases. OpenAI is rolling out two algorithms called GPT-5.4 mini and GPT 5.4 ...