What it does

This is the home page of DeepSeek, a company that offers an AI chat assistant on the web and in a downloadable app. The page advertises chatting with DeepSeek, a deep thinking option and a smart search option. It is written in Chinese, with an English toggle. For developers there is an open API platform, API documentation, an API pricing page and a service status page. A banner announces that DeepSeek V4.1 Flash has been updated to the V4.1-Flash-1017 version, with better project development ability, lower cost and faster completion of tasks, and that the API now supports web search and page fetching. The site invites testing and feedback. The navigation also lists a product called DeepSeek Harness, including a desktop version, although the page does not explain what it does. A research section links to release pages for V4.1, V4, V3.2, V3.1, R1 and V3, and the footer links to the company's GitHub organization. The page itself shows no prices for the chat assistant or the API, only a link to API pricing.

Capabilities

Chat assistant on the web and as a downloadable app
Deep thinking and smart search options in chat
Open API platform with documentation and a status page
API support for web search and page fetching
Release pages for the V4.1, V4, V3.2, V3.1, R1 and V3 models

When to use it

You want to chat with DeepSeek's models in a browser or phone app
You want to call DeepSeek's models from your own software through its API
You want to follow DeepSeek's latest model releases