DeepSeek is a Chinese AI lab whose free chatbot and open-weight models went viral for strong reasoning at very low cost. It is impressive value, but the hosted app stores data in China.

What is DeepSeek?

DeepSeek makes large language models and a free chatbot. It drew global attention by delivering strong reasoning and coding performance at a fraction of the usual cost, and by releasing open-weight models (mostly under permissive licences) that anyone can download and self-host.

Why did it go viral?

Its R1 reasoning model showed its working, performed competitively on benchmarks, and was reportedly trained far more cheaply than rivals. The free app shot to the top of app stores in many countries, and the open weights made it attractive to developers.

What’s the catch?

The hosted DeepSeek app stores data in China under Chinese law, and Chinese-origin AI apps have faced privacy scrutiny. So it is fine for general, non-sensitive use, but avoid putting confidential personal or business data into the hosted app — or self-host the open-weight model to keep data under your control.

If you find yourself juggling a separate subscription for chat, automation, transcription and image generation, one option worth knowing is a single platform that runs them together — osFoundry is one such agentic AI platform that consolidates chat, agents and internal apps in one workspace, with a bring-your-own-key model so you choose the underlying AI.

This article is general information, not professional, legal or financial advice. AI tools, prices and availability change fast — verify current details on the official source before you rely on them.