Large language models

Why language models hallucinate

OpenAI’s new research explains why language models hallucinate. The findings show how improved evaluations can enhance AI reliability, honesty, and safety.

OpenAI and Greek Government launch ‘OpenAI for Greece’

OpenAI and the Greek Government have launched “OpenAI for Greece” to bring ChatGPT Edu into secondary schools and support responsible AI learning. This partnership aims to boost AI literacy, fuel local start-ups, and drive national economic growth.

Building more helpful ChatGPT experiences for everyone

We’re partnering with experts, strengthening protections for teens with parental controls, and routing sensitive conversations to reasoning models in ChatGPT.

What exactly does word2vec learn?

What exactly does word2vec learn, and how? Answering this question amounts to understanding representation learning in a minimal yet interesting language modeling task.

Introducing gpt-realtime and Realtime API updates

We’re releasing a more advanced speech-to-speech model and new API capabilities including MCP server support, image input, and SIP phone calling support.

Accelerating life sciences research

Discover how a specialized AI model, GPT-4b micro, helped OpenAI and Retro Bio engineer more effective proteins for stem cell therapy and longevity research.

Scaling domain expertise in complex, regulated domains

Discover how Blue J is transforming tax research with AI-powered tools built on GPT-4. 1.

Mixi reimagines communication with ChatGPT

Discover how MIXI, a leader in digital entertainment and lifestyle services in Japan, uses ChatGPT Enterprise to transform productivity, boost AI adoption across teams, and create a secure environment for innovation.

Generate Images with Claude and Hugging Face

TextQuests: How Good are LLMs at Text-Based Video Games?

🇵🇭 FilBench - Can LLMs Understand and Generate Filipino?

Scaling accounting capacity with OpenAI

Built with OpenAI o3, o3-Pro, GPT-4. 1, and GPT-5, Basis’ AI agents help accounting firms save up to 30% of their time and expand capacity for advisory and growth.

From GPT-2 to gpt-oss: Analyzing the Architectural Advances

And How They Stack Up Against Qwen3

GPT-5 and the new era of work

GPT-5 is OpenAI’s most advanced model—transforming enterprise AI, automation, and workforce productivity in the new era of intelligent work.

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.

Coding and design with GPT-5

Learn how GPT-5 unlocks new possibilities in coding and design.

Creative writing with GPT-5

Learn how GPT-5 assists with creative writing.

Medical research with GPT-5

Learn how GPT-5 is used for medical research.

How Cursor uses GPT-5

Learn how Cursor uses GPT-5.

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.