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DeepSeek V3.1 Terminus

DeepSeek V3.1 Terminus is DeepSeek's September 22, 2025 refined iteration of V3.1. It delivers more stable outputs with improvements to multilingual consistency, Code Agent performance, and Search Agent capability.

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


const result = streamText({
  model: 'deepseek/deepseek-v3.1-terminus',
  prompt: 'Why is the sky blue?'
})
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Playground

Try out DeepSeek V3.1 Terminus by DeepSeek. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.