OpenAI Blog
Nov 13, 2025
Introducing GPT-5.1 for developers
GPT-5. 1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.
Introducing GPT-5 for developers
Introducing GPT-5 in our API platform—offering high reasoning performance, new controls for devs, and best-in-class results on real coding tasks.
Related stories
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
Aug 7, 2025
First look at GPT-5
See how a group of leading developers use GPT-5 for the first time.
OpenAI Blog
Feb 5
Introducing GPT-5.3-Codex
GPT-5. 3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.
OpenAI Blog
Apr 14, 2025
Introducing GPT-4.1 in the API
Introducing GPT-4. 1 in the API—a new family of models with across-the-board improvements, including major gains in coding, instruction following, and long-context understanding.
OpenAI Blog
Aug 7, 2025
Coding and design with GPT-5
Learn how GPT-5 unlocks new possibilities in coding and design.
OpenAI Blog
Mar 17
Introducing GPT-5.4 mini and nano
GPT-5. 4 mini and nano are smaller, faster versions of GPT-5.
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
Dec 11, 2025
Introducing GPT-5.2
GPT-5. 2 is our most advanced frontier model for everyday professional work, with state-of-the-art reasoning, long-context understanding, coding, and vision.
OpenAI Blog
Nov 19, 2025
Building more with GPT-5.1-Codex-Max
Introducing GPT-5. 1-Codex-Max, a faster, more intelligent agentic coding model for Codex.
OpenAI Blog
Feb 12
Introducing GPT-5.3-Codex-Spark
Introducing GPT-5. 3-Codex-Spark—our first real-time coding model.
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.