DeepSeek V4: A Milestone in Domestic Large Models

DeepSeek V4 is the latest flagship large model launched by the DeepSeek team, achieving significant improvements in reasoning, coding, Chinese language, and other dimensions. This article will comprehensively analyze its core capabilities, performance, and access methods.

Model Overview

DeepSeek V4 is a flagship large language model launched by the DeepSeek team in 2026. Compared to the V3 version, V4 has achieved significant improvements in the following areas:

• Reasoning Ability: Mathematical reasoning and logical reasoning capabilities have been greatly enhanced, approaching GPT-4o level
• Code Generation: Supports more programming languages, with significantly improved code quality and executability
• Chinese Understanding: Chinese semantic understanding is more accurate, and generated content is more natural and fluent
• Context Window: Supports an ultra-long context of 128K tokens
• Tool Calling: Natively supports Function Calling, compatible with OpenAI format
• Response Speed: Inference speed optimized, with lower first-token latency

Benchmark Performance

From the data, DeepSeek V4 has achieved a 5-7 point improvement across all core metrics, and its overall capabilities are now close to or even partially surpassing GPT-4o.

Application Scenarios

Recommended Scenarios

Pricing and Access

DeepSeek V4 pricing on the Ciyuan Circle platform:

Quick Access

from openai import OpenAI

client = OpenAI(
    base_url="https://www.ciyuano.com/v1",
    api_key=***
)

response = client.chat.completions.create(
    model="deepseek-v4",
    messages=[{"role": "user", "content": "Hello"}]
)
print(response.choices[0].message.content)

Supports all client tools compatible with the OpenAI SDK, including ChatGPT Next Web, LobeChat, Cursor, Cherry Studio, and more.

Comparison with Other Models

Summary

DeepSeek V4 is currently one of the most comprehensive domestic large models. It performs excellently in reasoning, coding, Chinese language, and other dimensions, while maintaining a highly competitive price.

Recommendation Index: Suitable for most general scenarios, especially applications that require Chinese language capability and code generation.