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AI Engineer July 19, 2025

OpenThoughts: Data Recipes for Reasoning Models — Ryan Marten, Bespoke Labs

Summary

The main theme is the development of open-source reasoning datasets and models, focusing on the "reasoning" component of AI. Key subjects include the impressive performance gains in reasoning benchmarks, the effectiveness of step-by-step thinking and "chain of thought" for complex tasks like competitive math problems, and the influence of models like DeepSeek R1 which incorporated Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL) for reasoning data generation. The practical takeaway is that while the "training recipe" for strong reasoning models is becoming clearer, the availability of high-quality data is the missing link, prompting the drive to create open-source datasets for this purpose, emphasizing benefits like performance, privacy, speed, cost, and ownership.

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