DeepSeek
Free AI chat with strong reasoning, backed by open-weight models
- Free
- Open source
- API
Free reasoning help and developers using open models
Overview
DeepSeek offers a free chat assistant and publishes open-weight models that others can run and build on. It is known for strong maths and reasoning performance at low cost.
Check the provider's privacy policy before sharing sensitive data with the hosted app.
Pros
- Free to use
- Open-weight models available
- Low-cost API
Cons
- Data is processed on servers in China
- Hosted app can be busy at peak times
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