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?'})More models by DeepSeek
| Model |
|---|
| 1M | 0.6s | 102tps | $0.14/M | $0.28/M | Read:$0.0/M Write:— | — | — |    | 04/23/2026 | ||||
| 1M | 0.9s | 62tps | $0.43/M | $0.87/M | Read:$0.0/M Write:— | — | — |  +1 | 04/23/2026 | ||||
| 164K | 0.8s | 83tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — |  +2 | 12/01/2025 | ||||
| 164K | 0.3s | 100tps | $0.28/M | $0.42/M | Read:$0.03/M Write:— | — | — | +2 | 12/01/2025 | ||||
| 164K | 0.3s | 136tps | $0.50/M | $1.50/M | Read:$0.13/M Write:— | — | — |  +3 | 08/21/2025 | ||||
| 164K | 0.9s | 111tps | $0.77/M | $0.77/M | Read:$0.14/M Write:— | — | — | | 12/26/2024 |