DeepSeek V4 Release: A New Milestone for Domestic Large Models

In early 2026, DeepSeek officially released the V4 series of large language models, including two versions: DeepSeek V4 and DeepSeek V4 Flash.

Key Highlights

Significantly Improved Reasoning Capabilities

DeepSeek V4 performs exceptionally well in mathematical reasoning, code generation, and logical analysis, approaching or even surpassing GPT-4o in multiple benchmark tests.

Extreme Cost-Effectiveness

The DeepSeek V4 Flash version is priced as low as $1/M input tokens and $2/M output tokens, making it one of the most cost-effective large models currently available.

128K Context Window

Supports a context window of 128K tokens, meeting the needs of long document processing and complex conversations.

Function Calling Support

Native support for function calls, making it convenient for developers to build Agent applications.

How to Use

Through Ciyuano Token Circle, you can directly use the DeepSeek V4 series models:

from openai import OpenAI
client = OpenAI(base_url="https://www.ciyuano.com/v1", api_key="sk-relay-Your API key")
response = client.chat.completions.create(
    model="deepseek-v4-flash",
    messages=[{"role": "user", "content": "Explain the basic principles of quantum computing"}]
)
print(response.choices[0].message.content)

Applicable Scenarios

• Programming Assistance: Code generation, debugging, refactoring
• Mathematical Reasoning: Complex calculations, proof derivation
• Multilingual Translation: Supports multiple languages including Chinese, English, Japanese, and Korean
• Content Creation: Copywriting, article generation

Summary

The release of DeepSeek V4 marks a new height for domestic large models in terms of cost-effectiveness and practicality.