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 29

Introducing GPT-6.1 Sol

OpenAI introduces GPT‑6.1 Sol, a new model described as near‑Astra intelligence for coding, computer use, and professional work. It offers these capabilities at one‑fifth of Astra’s standard API input and output token prices, implying a more cost‑effective solution for developers and businesses.

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.