Efficient Reasoning via Thought-Training and Thought-Free Inference

arXiv — cs.CLMonday, November 17, 2025 at 5:00:00 AM
Recent advancements in large language models (LLMs) have utilized Chain-of-Thought (CoT) prompting to enhance reasoning accuracy. However, existing methods often compress lengthy reasoning outputs, still relying on explicit reasoning during inference. The introduction of the 3TF framework (Thought-Training and Thought-Free inference) presents a Short-to-Long approach to efficient reasoning. This framework trains a hybrid model to operate in both reasoning and non-reasoning modes, internalizing structured reasoning while producing concise outputs during inference.
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