DeepSeek: DeepSeek V3.1

Coming soonQuick Start

DeepSeek V3.1 is DeepSeek's hybrid reasoning model, released 2025-08, extending V3 with two-phase long-context training and FP8 microscaling for efficient inference. The 671B-parameter model (37B active) supports thinking and non-thinking modes, and improves tool use, code generation, and reasoning efficiency, matching DeepSeek-R1 on difficult benchmarks while responding more quickly. It succeeds DeepSeek V3-0324 and suits coding, research, and agentic workflows.

This model is not routed on MirAPI yet — prices shown are the official list prices. Create an account to get notified when it goes live.

Modalities
inTextoutText
Price / 1M
$0.25 / $0.95
Context
164K
Knowledge cutoff
2025-03-31

Capabilities

ReasoningTool usePrompt cachingStructured output

Benchmarks

bar = score (0–100) · ▏ median

Scores from vendor reports and public leaderboards. No private evals.

GPQA Diamond
Science QA
79.7
#53
τ-bench (airline)
Agentic tool use
59.4
#67

Showcase

Three fixed prompts, identical for every chat model. Outputs are archived verbatim — copy the prompt to reproduce.

Task prompt · identical for all models
Build a single-file HTML page using three.js from a CDN: a low-poly planet with a tilted ring of ~200 orbiting particles, a soft key light plus rim light, slow auto-rotation, and drag-to-orbit controls. No build tools — one file only.
Archived output
Archive not published yet

Every model will run this exact prompt; the output lands here verbatim, with tokens and per-run cost.

Quick Start

import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.mirapi.ai/v1",   # changed
    api_key=os.environ["MIRAPI_API_KEY"],   # changed
)

resp = client.chat.completions.create(
    model="deepseek/deepseek-chat-v3.1",
    messages=[{"role": "user", "content": "Hello"}],
)
Wire DeepSeek V3.1 into your product

1M free tokens to start · no card · OpenAI-compatible, one base_url change

Start free