Group chats in ChatGPT are now piloting in Japan, New Zealand, South Korea, and Taiwan. A new way to collaborate with friends, family, or coworkers and ChatGPT in the same conversation.
@openai
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Interpreting Complex Behaviors of Powerful AI Models
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This is an early step; there is a long path from this work to fully understanding the complex behaviors of our most powerful models. Our aim is to understand larger models, gradually expand the set of behaviors we can reliably interpret, and obtain safety assurances using our
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Sparse Models Reveal Interpretable Task-Specific Components
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Unlike with normal models, we often find that we can pull out simple, understandable parts of our sparse models that perform specific tasks, such as ending strings correctly in code or tracking variable types. We also show promising early signs that our method could potentially
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Sparse Neural Networks Improve AI Model Interpretability Research
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Most neural networks today are dense and highly entangled, making it difficult to understand what each part is doing. In our new research, we train “sparse” models—with fewer, simpler connections between neurons—to see whether their computations become easier to understand.
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New Interpretable Training Method for Small Language Models
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We’ve developed a new way to train small AI models with internal mechanisms that are easier for humans to understand. Language models like the ones behind ChatGPT have complex, sometimes surprising structures, and we don’t yet fully understand how they work. This approach
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Custom Instructions Improve AI Model Punctuation Handling
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actually—it's better at not using em dashes—if you instruct it via custom instructions
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GPT-5.1 Reddit AMA and Customization Updates Announced
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Reddit AMA on GPT-5.1 and our customization updates. Tomorrow, 2PM PT.
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ChatGPT Atlas remembers your searches and browsing history
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ChatGPT Atlas can remember what you’ve searched, visited, and asked about — giving ChatGPT better context for more accurate answers.
— OpenAI (@OpenAI) 24 octobre 2025
You can also ask it to open, close, or revisit any of your tabs anytime. pic.twitter.com/yihrqOwbEIChatGPT Atlas can remember what you’ve searched, visited, and asked about — giving ChatGPT better context for more accurate answers. You can also ask it to open, close, or revisit any of your tabs anytime.
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ChatGPT Shared Projects Expand to All User Tiers
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Shared Projects are expanding to Free, Plus, and Pro users. Invite others to work together in ChatGPT using shared chats, files, and instructions all in one place.
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ChatGPT Now Sees Web Pages for Instant Answers
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Open “Ask ChatGPT” and ChatGPT can see the page you’re on to give instant, accurate answers—no tab-switching required.