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LongCat Flash Thinking

LongCat Flash Thinking is Meituan's 560B MoE reasoning model. It combines Lean4 formal proof capability, agentic tool use, and an ARC-AGI score of 50.3 in a single architecture.

ReasoningTool Use
index.ts
import { streamText } from 'ai'


const result = streamText({
  model: 'meituan/longcat-flash-thinking',
  prompt: 'Why is the sky blue?'
})
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09/23/2025