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What is Chain of Continuous Thought in AI (aka CoCoNut)?

February 22, 2025

Chain of Continuous Thought (CoCoNut) is an advanced reasoning approach in artificial intelligence (AI) that extends the Chain of Thought (CoT) technique by enabling a model to maintain and refine its reasoning over multiple steps, rather than following a fixed sequence of independent steps. It allows AI to iteratively improve its answers by revisiting previous thoughts, making it more flexible and capable of handling complex reasoning tasks.

Unlike traditional CoT prompting, where an AI model follows a linear path of logical deductions, CoCoNut encourages a more dynamic and evolving reasoning process. Think of it like a conversation where ideas are refined, reconsidered, and expanded upon as new information emerges. This method helps AI avoid premature conclusions and instead continuously adjust its thinking based on previous outputs, making it particularly useful for complex problem-solving, mathematical reasoning, and decision-making tasks.

The concept is inspired by how humans refine their thoughts. When solving a problem, we often loop back, revise, and build on prior steps rather than following a rigid one-way sequence. CoCoNut applies this principle to AI, allowing for more adaptive and context-aware reasoning. This can improve AI’s performance in areas like scientific discovery, legal analysis, and multi-step planning, where revisiting previous steps can lead to better final outcomes.

To dive deeper into CoCoNut, check out the academic paper: Training Large Language Models to Reason in a Continuous Latent Space by Shibo Hao, Sainbayar Sukhbaatar, DiJia Su, Xian Li, Zhiting Hu, Jason Weston, Yuandong Tian