Signals are classified by deterministic rules and carry provenance-based confidence. Each item links to its original source.
We’ve just sent a letter to Gov. Gavin Newsom calling for California to lead the way in harmonizing state-based AI regulation with national—and, by virtue of US leadership, emerging global—standards.
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.
This GPT-5 system card explains how a unified model routing system powers fast and smart responses using gpt-5-main, gpt-5-thinking, and lightweight versions like gpt-5-thinking-nano, optimized for different tasks and developer use.
In this paper, we study the worst-case frontier risks of releasing gpt-oss. We introduce malicious fine-tuning (MFT), where we attempt to elicit maximum capabilities by fine-tuning gpt-oss to be as capable as possible in two domains: biology and cybersecurity.
We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.
We’re releasing gpt-oss-120b and gpt-oss-20b—two state-of-the-art open-weight language models that deliver strong real-world performance at low cost. Available under the flexible Apache 2.0 license, these models outperform similarly sized open models on reaso…
As part of our Executive Function series, Model ML CEO Chaz Englander discusses how AI-native infrastructure and autonomous agents are transforming financial services workflows.
ChatGPT agent System Card: OpenAI’s agentic model unites research, browser automation, and code tools with safeguards under the Preparedness Framework.
OpenAI banned Russian-language accounts using AI to build malware, refine loaders, and troubleshoot cyber tooling.
OpenAI banned accounts associated with suspected deceptive employment campaigns that used AI to develop materials for potentially fraudulent remote-job applications.
OpenAI banned accounts associated with threat actors publicly attributed to the PRC, using AI to support vulnerability research, scripting, translation, and operational troubleshooting.
We are replacing the existing GPT-4o-based model for Operator with a version based on OpenAI o3. The API version will remain based on 4o.
Codex is a cloud-based coding agent. Codex is powered by codex-1, a version of OpenAI o3 optimized for software engineering. codex-1 was trained using reinforcement learning on real-world coding tasks in a variety of environments to generate code that closely…
HealthBench is a new evaluation benchmark for AI in healthcare which evaluates models in realistic scenarios. Built with input from 250+ physicians, it aims to provide a shared standard for model performance and safety in health.
Sharing our updated framework for measuring and protecting against severe harm from frontier AI capabilities.
We introduce PaperBench, a benchmark evaluating the ability of AI agents to replicate state-of-the-art AI research.
At OpenAI, we have long believed image generation should be a primary capability of our language models. That’s why we’ve built our most advanced image generator yet into GPT‑4o. The result—image generation that is not only beautiful, but useful.
4o image generation is a new, significantly more capable image generation approach than our earlier DALL·E 3 series of models. It can create photorealistic output. It can take images as inputs and transform them.
We’re releasing a research preview of OpenAI GPT‑4.5, our largest and most knowledgeable model yet.
Can frontier LLMs earn $1 million from real-world freelance software engineering?
OpenAI banned accounts potentially associated with publicly reported DPRK-affiliated threat actors using AI to research intrusion tooling, phishing, malware, and cryptocurrency targeting.
OpenAI banned accounts potentially used to facilitate a deceptive employment scheme with characteristics of publicly reported North Korea-linked IT-worker activity.
Sora is OpenAI’s video generation model, designed to take text, image, and video inputs and generate a new video as an output. Sora builds on learnings from DALL-E and GPT models, and is designed to give people expanded tools for storytelling and creative exp…
Developers can now fine-tune GPT-4o with images and text to improve vision capabilities
OpenAI banned accounts likely belonging to a suspected China-based adversary tracked as SweetSpecter, using AI to research vulnerabilities, write code, and support spear-phishing activity.