s1 is a reasoning training framework and GPU cluster orchestrator designed to build and refine large language models. It provides a system for executing supervised fine-tuning on distributed hardware, utilizing gradient checkpointing and hardware optimization to improve model reasoning.
The project features a synthetic data generator and dataset builder that produce high-quality training sets. This workflow collects questions, generates model reasoning traces, and applies automated grading loops to filter for correct answers.
The framework includes an evaluation suite to compute accuracy and statistical metrics on standardized benchmarks. It also implements test-time scaling techniques to increase reasoning accuracy by expanding the computational search space during the inference phase.