OpenAI Blog
Mar 17
Introducing GPT-5.4 mini and nano
GPT-5. 4 mini and nano are smaller, faster versions of GPT-5.
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.
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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.
OpenAI Blog
Aug 7, 2025
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.
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
Mar 5
Introducing GPT-5.4
Introducing GPT-5. 4, OpenAI’s most most capable and efficient frontier model for professional work, with state-of-the-art coding, computer use, tool search, and 1M-token context.
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
Nov 6, 2023
New models and developer products announced at DevDay
GPT-4 Turbo with 128K context and lower prices, the new Assistants API, GPT-4 Turbo with Vision, DALL·E 3 API, and more.
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
Aug 7, 2025
First look at GPT-5
See how a group of leading developers use GPT-5 for the first time.
OpenAI Blog
Nov 5, 2019
GPT-2: 1.5B release
As the final model release of GPT-2’s staged release, we’re releasing the largest version (1. 5B parameters) of GPT-2 along with code and model weights to facilitate detection of outputs of GPT-2 models.
OpenAI Blog
Jun 26
Previewing GPT-5.6 Sol: a next-generation model
OpenAI previews GPT-5. 6 Sol, a next-generation model with stronger capabilities in coding, science, and cybersecurity, paired with its most advanced safety stack.
OpenAI Blog
Oct 1, 2024
Introducing vision to the fine-tuning API
Developers can now fine-tune GPT-4o with images and text to improve vision capabilities