Hugging Face ThinkPRM-1.5B by launch is a 1.5 billion parameter Process Reward Model (PRM) based on the R1-Distill-Qwen-1.5B architecture, designed for step-by-step verification of reasoning processes. It generates explicit verification chain-of-thought (CoT) by labeling each step, requiring significantly less supervision data than traditional discriminative PRMs. This model excels at providing step-level verification scores and critiques for solutions in mathematical reasoning, scientific QA, and code generation tasks, with a notable context length of 131072 tokens.
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