Incredible value. The reasoning model is very strong at math.

Free AI assistant and open-weight models for reasoning and coding
DeepSeek is an AI tool: Free AI assistant and open-weight models for reasoning and coding. It is free to use. Works on Web, iOS and Android. Rated 4.7/5 from 3 reviews on GetTried. Website last checked 12 Nov 2026.
DeepSeek offers a free AI chat assistant and open-weight language models known for strong reasoning, maths and coding at low cost. Use the chat on the web or mobile, turn on deep thinking for hard problems, or build on the low-priced API.
Incredible value. The reasoning model is very strong at math.
I run DeepSeek through the API for a side project. The price per token is a fraction of the others with similar quality for coding, and the open weights are a big plus.
Great free model, but the servers get busy at peak time.