DeepSeek V4 Released: Another Breakthrough for Chinese AI Models

DeepSeek V4 is here.

The biggest news in the AI world over the past few days is DeepSeek's release of the V4 version. According to official benchmarks, V4 has approached or even surpassed GPT-5 and Claude 4 on multiple metrics, including MATH, HumanEval, and MMLU.

Key Data

• Parameter count: Not disclosed (rumored ~1.2T)
• Context window: 1M tokens
• Training cost: Reportedly less than 5% of OpenAI's
• API pricing: ¥1/million tokens for input, ¥4/million tokens for output

Why It Matters

Chinese AI models have long been criticized for "looking good on benchmarks but underperforming in practice." But DeepSeek V3 already proved that domestic models can go toe-to-toe with GPT-4, and V4 takes it a step further.

Most importantly, DeepSeek remains committed to the open-source and low-cost approach. This is good news for the entire industry—small and medium-sized companies and individual developers can access top-tier models without spending millions on GPUs.

Impact on Backend Engineers

As a backend engineer, I'm most concerned about API stability and ecosystem. V4's API is compatible with the OpenAI format, which means existing tools like LangChain and AutoGPT can integrate directly with minimal migration cost.

Regardless, the AI race in 2026 is getting more exciting by the day.

References:

• DeepSeek Official