Where to Try DeepSeek-V4 Preview

Web chat: the simplest way to test it

If you just want to see how the model responds—whether for writing, summarising, translation, reasoning or general Q&A—the web chat is the easiest starting point. DeepSeek’s homepage includes a “Start Now” option for direct chat access.

This route is best if you do not need code, API keys or product integration yet. It lets you evaluate the model’s responses directly in the browser.

DeepSeek app: the mobile option

DeepSeek also states that DeepSeek-V4 Preview is available on the app, and the homepage includes a “Get DeepSeek App” entry point. This is the more natural choice if you prefer using AI tools from a phone rather than keeping a browser tab open.

Based on the official pages provided, the app is one of the three announced access channels for V4 Preview: web, app and API.

DeepSeek Platform API: for developers and product teams

If you want to call the model from code, test automated workflows or connect DeepSeek to an existing product, use DeepSeek Platform. The DeepSeek homepage includes an “Access API” link, and the DeepSeek Platform page also says DeepSeek-V4 Preview is available on web, app and API.

The API route is the right fit for use cases such as building a chatbot, adding text-processing features, testing model output in a technical pipeline or comparing models in your own environment. Details such as pricing, rate limits, account requirements and exact endpoints should be checked directly on DeepSeek Platform at the time you use it.

A note on the name “DeepSeek V4”

In the official sources provided, the name shown is “DeepSeek-V4 Preview.” If you are looking for a safe place to try it, stick to the access points DeepSeek itself lists: the web chat from the homepage, the official app route and DeepSeek Platform for API access.

Bottom line: choose web chat for the fastest test, the app for mobile use, and DeepSeek Platform API if you need developer access.