Shypd.aiThe largest open index of AI toolsVibeThinker is an open-source Coding & Development tool that enhances reasoning capabilities in smaller models. It utilizes a post-training methodology based on the Spectrum-to-Signal Principle (SSP).
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VibeThinker-1.5B is a 1.5B-parameter dense model developed by WeiboAI, challenging the conventional belief that small models inherently lack robust reasoning capabilities. It employs an innovative post-training methodology centered on the "Spectrum-to-Signal Principle (SSP)" to systematically enhance output diversity. This involves a "Two-Stage Diversity-Exploring Distillation" in the SFT phase and a "MaxEnt-Guided Policy Optimization (MGPO)" framework in the RL phase. VibeThinker-1.5B demonstrates superior reasoning in mathematical and coding tasks, outperforming larger models like DeepSeek R1 and achieving comparable results to GPT OSS-20B Medium, all at a significantly lower cost.
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