DeepSeek
A free chat assistant and a low-cost model for your own apps.
What it does
- Answers questions and drafts text in a chat.
- Writes and explains code.
- Works through maths and logic problems step by step.
- Reads files you upload.
- Gives developers an API to build it into their own apps.
Best for
- Developers who watch cost per call.
- Code and reasoning questions.
- Teams that want to test a second model.
Pricing
US$0.15 per 1 million input tokens. The chat app is free. The API charges by use, and this price is for the deepseek-flash model off peak. Peak hours cost double, and the larger deepseek-v4-pro costs more.