Open Thoughts: Curating Reasoning Datasets for Open-Source R1 Replications

Bespoke Labs + Stanford community effort releasing OpenThoughts-114K and OpenThoughts2-1M datasets of distilled DeepSeek-R1 reasoning traces.

Publisher: Bespoke Labs
Year: 2025
Venue: blog
URL: open-thoughts.ai
Code: github.com/open-thoughts/open-thoughts
Authors: 14

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Attribution

Abstract & full text: open-thoughts.ai
TL;DR: Semantic Scholar
Code: github.com/open-thoughts/open-thoughts

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Introduces 2 artifacts - 1 tool, 1 model

Artifacts

2

Tools

Models

OpenThinker (series)

Authors

14

Ashima Suvarna Ben Feuer Etash Guha Georgios Smyrnis Hritik Bansal Jean Mercat Liangyu Chen Marianna Nezhurina Negin Raoof Ryan Marten Sedrick Keh Trung Vu Zaid Khan Zayne Sprague