DeepSeek

by DeepSeek

Free chat assistant from DeepSeek, whose models are also released with open weights.

Free

About

DeepSeek offers a free web and mobile chat assistant built on its own models, several of which are published with open weights. Developers can use the same models through a pay-as-you-go API.

Preview of deepseek.com
Screenshot · 8 Oct 2026Visit (opens DeepSeek official site in a new tab)

More pictures

  • Further down the homepage
  • The picture the site shows when it’s shared

Taken from deepseek.com. The pictures belong to the site’s owner and are shown to identify the site.

Useful features

  • Free chat on web and mobile
  • Reasoning mode for step-by-step problems
  • Web search
  • Open-weight models and an API

Good for

  • Math and logic problems
  • Coding questions
  • General chat at no cost

Pricing

Free. The chat app is free. API usage is billed per token.

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