_version_ 1866916780303187968
author Guha, Etash
Marten, Ryan
Keh, Sedrick
Raoof, Negin
Smyrnis, Georgios
Bansal, Hritik
Nezhurina, Marianna
Mercat, Jean
Vu, Trung
Sprague, Zayne
Suvarna, Ashima
Feuer, Benjamin
Chen, Liangyu
Khan, Zaid
Frankel, Eric
Grover, Sachin
Choi, Caroline
Muennighoff, Niklas
Su, Shiye
Zhao, Wanjia
Yang, John
Pimpalgaonkar, Shreyas
Sharma, Kartik
Ji, Charlie Cheng-Jie
Deng, Yichuan
Pratt, Sarah
Ramanujan, Vivek
Saad-Falcon, Jon
Li, Jeffrey
Dave, Achal
Albalak, Alon
Arora, Kushal
Wulfe, Blake
Hegde, Chinmay
Durrett, Greg
Oh, Sewoong
Bansal, Mohit
Gabriel, Saadia
Grover, Aditya
Chang, Kai-Wei
Shankar, Vaishaal
Gokaslan, Aaron
Merrill, Mike A.
Hashimoto, Tatsunori
Choi, Yejin
Jitsev, Jenia
Heckel, Reinhard
Sathiamoorthy, Maheswaran
Dimakis, Alexandros G.
Schmidt, Ludwig
author_facet Guha, Etash
Marten, Ryan
Keh, Sedrick
Raoof, Negin
Smyrnis, Georgios
Bansal, Hritik
Nezhurina, Marianna
Mercat, Jean
Vu, Trung
Sprague, Zayne
Suvarna, Ashima
Feuer, Benjamin
Chen, Liangyu
Khan, Zaid
Frankel, Eric
Grover, Sachin
Choi, Caroline
Muennighoff, Niklas
Su, Shiye
Zhao, Wanjia
Yang, John
Pimpalgaonkar, Shreyas
Sharma, Kartik
Ji, Charlie Cheng-Jie
Deng, Yichuan
Pratt, Sarah
Ramanujan, Vivek
Saad-Falcon, Jon
Li, Jeffrey
Dave, Achal
Albalak, Alon
Arora, Kushal
Wulfe, Blake
Hegde, Chinmay
Durrett, Greg
Oh, Sewoong
Bansal, Mohit
Gabriel, Saadia
Grover, Aditya
Chang, Kai-Wei
Shankar, Vaishaal
Gokaslan, Aaron
Merrill, Mike A.
Hashimoto, Tatsunori
Choi, Yejin
Jitsev, Jenia
Heckel, Reinhard
Sathiamoorthy, Maheswaran
Dimakis, Alexandros G.
Schmidt, Ludwig
contents Reasoning models have made rapid progress on many benchmarks involving math, code, and science. Yet, there are still many open questions about the best training recipes for reasoning since state-of-the-art models often rely on proprietary datasets with little to no public information available. To address this, the goal of the OpenThoughts project is to create open-source datasets for training reasoning models. After initial explorations, our OpenThoughts2-1M dataset led to OpenThinker2-32B, the first model trained on public reasoning data to match DeepSeek-R1-Distill-32B on standard reasoning benchmarks such as AIME and LiveCodeBench. We then improve our dataset further by systematically investigating each step of our data generation pipeline with 1,000+ controlled experiments, which led to OpenThoughts3. Scaling the pipeline to 1.2M examples and using QwQ-32B as teacher yields our OpenThoughts3-7B model, which achieves state-of-the-art results: 53% on AIME 2025, 51% on LiveCodeBench 06/24-01/25, and 54% on GPQA Diamond - improvements of 15.3, 17.2, and 20.5 percentage points compared to the DeepSeek-R1-Distill-Qwen-7B. All of our datasets and models are available on https://openthoughts.ai.
format Preprint
id arxiv_https___arxiv_org_abs_2506_04178
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle OpenThoughts: Data Recipes for Reasoning Models
Guha, Etash
Marten, Ryan
Keh, Sedrick
Raoof, Negin
Smyrnis, Georgios
Bansal, Hritik
Nezhurina, Marianna
Mercat, Jean
Vu, Trung
Sprague, Zayne
Suvarna, Ashima
Feuer, Benjamin
Chen, Liangyu
Khan, Zaid
Frankel, Eric
Grover, Sachin
Choi, Caroline
Muennighoff, Niklas
Su, Shiye
Zhao, Wanjia
Yang, John
Pimpalgaonkar, Shreyas
Sharma, Kartik
Ji, Charlie Cheng-Jie
Deng, Yichuan
Pratt, Sarah
Ramanujan, Vivek
Saad-Falcon, Jon
Li, Jeffrey
Dave, Achal
Albalak, Alon
Arora, Kushal
Wulfe, Blake
Hegde, Chinmay
Durrett, Greg
Oh, Sewoong
Bansal, Mohit
Gabriel, Saadia
Grover, Aditya
Chang, Kai-Wei
Shankar, Vaishaal
Gokaslan, Aaron
Merrill, Mike A.
Hashimoto, Tatsunori
Choi, Yejin
Jitsev, Jenia
Heckel, Reinhard
Sathiamoorthy, Maheswaran
Dimakis, Alexandros G.
Schmidt, Ludwig
Machine Learning
Reasoning models have made rapid progress on many benchmarks involving math, code, and science. Yet, there are still many open questions about the best training recipes for reasoning since state-of-the-art models often rely on proprietary datasets with little to no public information available. To address this, the goal of the OpenThoughts project is to create open-source datasets for training reasoning models. After initial explorations, our OpenThoughts2-1M dataset led to OpenThinker2-32B, the first model trained on public reasoning data to match DeepSeek-R1-Distill-32B on standard reasoning benchmarks such as AIME and LiveCodeBench. We then improve our dataset further by systematically investigating each step of our data generation pipeline with 1,000+ controlled experiments, which led to OpenThoughts3. Scaling the pipeline to 1.2M examples and using QwQ-32B as teacher yields our OpenThoughts3-7B model, which achieves state-of-the-art results: 53% on AIME 2025, 51% on LiveCodeBench 06/24-01/25, and 54% on GPQA Diamond - improvements of 15.3, 17.2, and 20.5 percentage points compared to the DeepSeek-R1-Distill-Qwen-7B. All of our datasets and models are available on https://openthoughts.ai.
title OpenThoughts: Data Recipes for Reasoning Models
topic Machine Learning
url https://arxiv.org/abs/2506.04178