We trained the gpt-oss models for reasoning, efficiency, and real-world usability across a wide range of deployment environments. Both models were post-trained using our harmony response format to align them with the OpenAI Model Spec and teach them to apply chain‑of‑thought
@openai
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Agentic AI Models: Advanced Function Calling and Reasoning Capabilities
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These models are trained for agentic workflows—supporting function calling, web search, Python execution, configurable reasoning effort, and full raw chain-of-thought access.
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Two Open-Weight Reasoning Models Released Under Apache 2.0
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We released two open-weight reasoning models—gpt-oss-120b and gpt-oss-20b—under an Apache 2.0 license. Developed with open-source community feedback, these models deliver meaningful advancements in both reasoning capabilities & safety.
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Open-Source LLM Matches OpenAI o4-mini on Benchmarks
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gpt-oss-120b matches OpenAI o4-mini on core benchmarks and exceeds it in narrow domains like competitive math or health-related questions, all while fitting on a single 80GB GPU (or high-end laptop). gpt-oss-20b fits on devices as small as 16GB, while matching or exceeding
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ChatGPT Enhances Wellbeing Features With Break Reminders
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We build ChatGPT to help you thrive in the ways you choose — not to hold your attention, but to help you use it well. We’re improving support for tough moments, have rolled out break reminders, and are developing better life advice, all guided by expert input.
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Does ChatGPT Cause Brain Rot? OpenAI Education Podcast
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Does ChatGPT really cause brain rot?
— OpenAI (@OpenAI) 30 juillet 2025
Our Head of Education Leah Belsky and two college students join @andrewmayne to discuss this and more on episode 4 of the OpenAI Podcast. pic.twitter.com/ECKQiYw8NDDoes ChatGPT really cause brain rot? Our Head of Education Leah Belsky and two college students join @andrewmayne to discuss this and more on episode 4 of the OpenAI Podcast.
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ChatGPT Study Mode Improves Learning with Educator Collaboration
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Built in collaboration with educators and experts, study mode is our first step toward improving learning in ChatGPT. Education is a key AI frontier, and through NextGenAI and Stanford’s SCALE Initiative, we’re running longer term studies to further understand how AI tools shape
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ChatGPT Study Mode: Interactive Learning with Socratic Questioning
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Study mode in ChatGPT is designed to be interactive, using Socratic questioning and scaffolded responses to help guide users. Available to logged-in Free, Plus, Pro, Team users, with availability in ChatGPT Edu coming in the coming weeks.
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ChatGPT Study Mode Enhances Student Learning Step-by-Step
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As ChatGPT becomes a go-to tool for students, we’re committed to ensuring it fosters deeper understanding and learning. Introducing study mode in ChatGPT — a learning experience that helps you work through problems step-by-step instead of just getting an answer.