OpenAI to release open-source model as AI economics force strategic shift

OpenAI plans to release its first open-weight AI model since 2019 as economic pressures mount from competitors like DeepSeek and Meta, marking a significant strategic reversal for the company behind ChatGPT.

Kevin Weil 🇺🇸 on Twitter / X

💥 Today we’re introducing Prism—a free, AI-native workspace for scientists to write and collaborate on research, powered by GPT-5.2.Accelerating science requires progress on two fronts:1. Frontier AI models that use scientific tools and can tackle the hardest problems2.… pic.twitter.com/cnLysHixuQ— Kevin Weil 🇺🇸 (@kevinweil) January 27, 2026

Early science acceleration experiments with GPT-5

AI models like GPT-5 are an increasingly valuable tool for scientists, but many remain unaware of the capabilities of frontier AI. We present a collection of short case studies in which GPT-5 produced new, concrete steps in ongoing research across mathematics, physics, astronomy, computer science, biology, and materials science. In these examples, the authors highlight how AI accelerated their work, and where it fell short; where expert time was saved, and where human input was still key. We document the interactions of the human authors with GPT-5, as guiding examples of fruitful collaboration with AI. Of note, this paper includes four new results in mathematics (carefully verified by the human authors), underscoring how GPT-5 can help human mathematicians settle previously unsolved problems. These contributions are modest in scope but profound in implication, given the rate at which frontier AI is progressing.

Where agents meet the gate - Sensemaker

This week’s AI story was not just smarter models. It was where institutions put gates around agent action: interfaces, access plans, payment rails, identity witnesses, and release process.

Meet Foundry: An AI Startup that Builds, Evaluates, and Improves AI Agents

Models.dev — An open-source database of AI models

Models.dev is a comprehensive open-source database of AI model specifications, pricing, and features.

Introduction to Agents

Discover what actually works in AI. Join millions of builders, researchers, and labs evaluating agents, models, and frontier technology through crowdsourced benchmarks, competitions, and hackathons.

After automation: AI will have rules, but those rules will constantly be shifting

Drew Breunig, CEO and cofounder, Cmpnd — Every new model will mean a new interpreter—Claude and GPT read the same instructions through different priors, the way two judges apply the same law and reach different verdicts.