OpenAI Blog

GPT-6 Astra: A new generation of intelligence

OpenAI introduces GPT‑6 Astra, positioning it as the most intelligent and aligned model to date. The new model boasts state‑of‑the‑art capabilities in computer use, coding, cybersecurity, and science. It represents a significant step forward in AI performance and alignment.

OpenAI Blog
Sep 3

Safety overview: GPT-6 Astra

GPT-6 Astra is described as OpenAI’s most capable broadly deployed model. It is noted as the first model to reach the Critical level of cybersecurity capability under OpenAI’s Preparedness Framework. The article highlights its significance as a milestone in safety and security for AI deployments.

OpenAI Blog
Aug 7, 2025

Introducing GPT-5

We are introducing GPT‑5, our best AI system yet. GPT‑5 is a significant leap in intelligence over all our previous models, featuring state-of-the-art performance across coding, math, writing, health, visual perception, and more.

OpenAI Blog
Dec 18, 2025

Introducing GPT-5.2-Codex

GPT-5. 2-Codex is OpenAI’s most advanced coding model, offering long-horizon reasoning, large-scale code transformations, and enhanced cybersecurity capabilities.

OpenAI Blog
Apr 23

Introducing GPT-5.5

Introducing GPT-5. 5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.

OpenAI Blog
Sep 11

Cognition helps Devin test its own work with GPT‑6 Astra

The OpenAI Blog article titled "Cognition helps Devin test its own work with GPT‑6 Astra" discusses how GPT‑6 Astra enhances Devin’s capability to test software and demonstrate its functionality. This improvement aims to enable engineers to review less code and accelerate shipping of products.