deepseek v4 Blog - One API Access 500+ AI Models

Apr 9, 2026

DeepSeek v4 is now available on the web: How to access and test it

DeepSeek V4 gray-scale test has leaked and is actively rolling out in limited form on the official web platform. Select users now see a redesigned interface with **Fast Mode** (default, high-speed daily use), **Expert Mode** (deep reasoning and complex problem-solving), and **Vision Mode** (multimodal image and video handling). This marks the most significant update since DeepSeek-V3.2, with rumored 1 million token context windows, updated knowledge bases, native multimodal capabilities, and a new underlying architecture optimized for speed, logic, and efficiency.

DeepSeek Update: what changed, what’s new, and why it matters

In February 2026, Chinese AI startup DeepSeek rolled out a significant update to its online application and web interface, signaling momentum toward its next-generation model release, DeepSeek V4. While the update comes ahead of the full V4 model, it has already sparked conversation among users and industry watchers for its changes to interaction behavior, long-context capabilities, and preparatory testing for future potential.