DeepSeek V3.1 Terminus API & Playground

DeepSeek-V3.1-Terminus is an updated version of DeepSeek-V3.1 with enhanced language consistency, reduced mixed Chinese-English text, and optimized Code Agent and Search Agent performance.

DeepSeek V3.1 Terminus API Features

On-demand Deployment

Docs

On-demand deployments allow you to use DeepSeek V3.1 Terminus on dedicated GPUs with Fireworks' high-performance serving stack with high reliability and no rate limits.

DeepSeek V3.1 Terminus FAQs

Metadata

State

Ready

Created on

9/23/2025

Kind

Base model

Provider

Deepseek

Hugging Face

deepseek-ai/DeepSeek-V3.1-Terminus

Specification

Calibrated

Yes

Mixture-of-Experts

Yes

Parameters

674B

Supported Functionality

Fine-tuning

Not supported

Serverless

Not supported

Context Length

163k tokens

Function Calling

Supported

Embeddings

Not supported

Rerankers

Not supported

Support image input

Not supported