Language ModelDeepSeekHotOpen SourceFastMoE

DeepSeek V3 API

High-performance general-purpose LLM with MoE architecture, comparable to GPT-4o at 95% lower cost.

Parameters

685B (MoE, 37B active)

Context

128,000 tokens

Organization

DeepSeek

Pricing

$0.1

per 1M input tokens


$0.2

per 1M output tokens

Try DeepSeek V3 for Free

Quick Start

Start using DeepSeek V3 in minutes. VoltageGPU provides an OpenAI-compatible API — just change the base_url.

Python (OpenAI SDK)
pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://api.voltagegpu.com/v1",
    api_key="YOUR_VOLTAGE_API_KEY"
)

response = client.chat.completions.create(
    model="deepseek-ai/DeepSeek-V3",
    messages=[
        {"role": "system", "content": "You are a helpful coding assistant."},
        {"role": "user", "content": "Write a Python function to find the longest palindromic substring."}
    ],
    max_tokens=2048,
    temperature=0.7
)

print(response.choices[0].message.content)
cURL
Terminal
curl -X POST https://api.voltagegpu.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_VOLTAGE_API_KEY" \
  -d '{
    "model": "deepseek-ai/DeepSeek-V3",
    "messages": [
      {"role": "system", "content": "You are a helpful coding assistant."},
      {"role": "user", "content": "Write a Python function to find the longest palindromic substring."}
    ],
    "max_tokens": 2048,
    "temperature": 0.7
  }'

Pricing

ComponentPriceUnit
Input tokens$0.1per 1M tokens
Output tokens$0.2per 1M tokens

New accounts receive $5 free credit. No credit card required to start.


Capabilities & Benchmarks

DeepSeek V3 excels across a wide range of benchmarks: MMLU (88.5%), MATH-500 (90.2%), HumanEval (82.6%), and GPQA (59.1%). It supports multi-turn conversations, tool use, function calling, and JSON mode. The MoE architecture activates only 37B of the total 685B parameters per token, enabling fast inference while maintaining the quality of much larger dense models.


About DeepSeek V3

DeepSeek V3 is a powerful general-purpose language model featuring 685 billion total parameters in a Mixture-of-Experts (MoE) architecture with 37 billion active parameters. Developed by DeepSeek, it delivers exceptional performance across coding, math, reasoning, and general knowledge tasks. V3 uses Multi-head Latent Attention (MLA) and DeepSeekMoE for efficient inference, achieving performance comparable to GPT-4o and Claude 3.5 Sonnet at a fraction of the cost. The model was trained on 14.8 trillion tokens with innovative FP8 mixed-precision training.


Use Cases

💬

General-Purpose Chat

Build chatbots and conversational AI with broad knowledge and strong instruction following.

⌨️

Code Assistance

Generate, complete, and refactor code across 50+ programming languages with high accuracy.

✍️

Content Generation

Write articles, marketing copy, emails, and creative content with nuanced language.

📈

Data Analysis

Analyze datasets, generate insights, create SQL queries, and process structured data.

🌐

Translation & Multilingual

Translate between languages and process multilingual content with high fidelity.


API Reference

Endpoint

POSThttps://api.voltagegpu.com/v1/chat/completions

Headers

AuthorizationBearer YOUR_VOLTAGE_API_KEYRequired
Content-Typeapplication/jsonRequired

Model ID

deepseek-ai/DeepSeek-V3

Use this value as the model parameter in your API requests.

Example Request

curl -X POST https://api.voltagegpu.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_VOLTAGE_API_KEY" \
  -d '{
    "model": "deepseek-ai/DeepSeek-V3",
    "messages": [
      {"role": "system", "content": "You are a helpful coding assistant."},
      {"role": "user", "content": "Write a Python function to find the longest palindromic substring."}
    ],
    "max_tokens": 2048,
    "temperature": 0.7
  }'



Frequently Asked Questions

How does DeepSeek V3 compare to GPT-4o?

DeepSeek V3 achieves comparable performance to GPT-4o on most benchmarks while costing $0.10/M input tokens versus GPT-4o's $2.50/M. On MMLU it scores 88.5% (GPT-4o: 88.7%), and on HumanEval for coding it scores 82.6% (GPT-4o: 90.2%). For most production use cases, V3 provides excellent quality at 95% lower cost.

What is MoE architecture?

Mixture-of-Experts (MoE) is an architecture where only a subset of the model's parameters are activated for each token. DeepSeek V3 has 685B total parameters but only activates 37B per token, giving it the knowledge capacity of a massive model with the inference speed of a much smaller one.

Does DeepSeek V3 support function calling?

Yes, DeepSeek V3 supports OpenAI-compatible function calling and tool use through the VoltageGPU API. You can define tools in the standard OpenAI format and the model will generate appropriate function calls based on user queries.

What languages does DeepSeek V3 support?

DeepSeek V3 supports English, Chinese, and many other languages. It was trained on a diverse multilingual corpus and performs well for translation, multilingual content generation, and cross-lingual tasks.


Start using DeepSeek V3 today

Get $5 free credit when you sign up. No credit card required. Deploy in under 30 seconds with our OpenAI-compatible API.