DeepSeek V4 Flash

New

1M-context fast tier replacing DeepSeek V3

Parameters

MoE (fast tier)

Context Length

About this model

DeepSeek V4 Flash is a Mixture-of-Experts model tuned for fast, affordable reasoning. It pairs strong math, logic, and coding performance with a 1M-token context, at just $0.15 / $0.29 per million tokens. Ideal for high-volume workloads that still need reasoning quality.

Capabilities

ReasoningMath and logicCode generationLong context (1M)Efficient inference

Use Cases

High-volume reasoning
Code development
Data analysis
Batch processing

Model Details

Provider: DeepSeek
Model ID: deepseek-v4-flash
Parameters: MoE (fast tier)
Context Length: 1M tokens
Category: chat

API Usage

Use the DOS API to integrate DeepSeek V4 Flashinto your applications. Our API is compatible with OpenAI's client libraries for easy migration.

Model ID

deepseek-v4-flash

Python

python

from dos import DOS

client = DOS()

response = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[
        {"role": "user", "content": "Hello, how are you?"}
    ]
)

print(response.choices[0].message.content)

cURL

bash

curl https://api.dos.ai/v1/chat/completions \
  -H "Authorization: Bearer $DOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek-v4-flash",
    "messages": [
      {"role": "user", "content": "Hello, how are you?"}
    ]
  }'

Node.js

javascript

import DOS from 'dos-ai';

const client = new DOS();

const response = await client.chat.completions.create({
  model: "deepseek-v4-flash",
  messages: [
    { role: "user", content: "Hello, how are you?" }
  ]
});

console.log(response.choices[0].message.content);

View full API reference

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