Our first project was curating open reasoning data recipes. OpenThoughts3, our best reasoning dataset recipe, is detailed in our release blog and the full paper.
@misc{guha2025openthoughtsdatarecipesreasoning,
title={OpenThoughts: Data Recipes for Reasoning Models},
author={Etash Guha and Ryan Marten and Sedrick Keh and Negin Raoof and Georgios Smyrnis and Hritik Bansal and Marianna Nezhurina and Jean Mercat and Trung Vu and Zayne Sprague and Ashima Suvarna and Benjamin Feuer and Liangyu Chen and Zaid Khan and Eric Frankel and Sachin Grover and Caroline Choi and Niklas Muennighoff and Shiye Su and Wanjia Zhao and John Yang and Shreyas Pimpalgaonkar and Kartik Sharma and Charlie Cheng-Jie Ji and Yichuan Deng and Sarah Pratt and Vivek Ramanujan and Jon Saad-Falcon and Jeffrey Li and Achal Dave and Alon Albalak and Kushal Arora and Blake Wulfe and Chinmay Hegde and Greg Durrett and Sewoong Oh and Mohit Bansal and Saadia Gabriel and Aditya Grover and Kai-Wei Chang and Vaishaal Shankar and Aaron Gokaslan and Mike A. Merrill and Tatsunori Hashimoto and Yejin Choi and Jenia Jitsev and Reinhard Heckel and Maheswaran Sathiamoorthy and Alexandros G. Dimakis and Ludwig Schmidt},
year={2025},
eprint={2506.04178},
archivePrefix={arXiv},
primaryClass={cs.LG},
url={https://arxiv.org/abs/2506.04178},
}
About us
We are a collaboration led by researchers and engineers from Stanford, UC Berkeley, UT Austin, NYU, University of Washington, UCSD, ASU, CMU, UCLA, UNC Chapel Hill, TUM, LAION, and other partners focused on building the best datasets (and therefore the best models). See our previous work atdatacomp.ai andmlfoundations.
OpenThoughts is powered by a broad ecosystem: academic and national lab clusters such as Juelich Supercomputing Center (JSC), TACC, ALCC Perlmutter, ZIH, and Oumi Exun by Lambda Labs; and supporters across the startup community including Daytona.io, Laude Institute, Bespoke Labs, and Oumi.ai, alongside long-standing partners such as the NSF IFML, UT Austin Machine Learning Lab, Toyota Research Institute, Lambda Labs, and the NHR Center of TU Dresden.