DeepSeek
Open-source AI lab offering powerful reasoning and coding models with competitive performance at low cost.
Features
- DeepSeek-R1 reasoning model
- Strong coding and math performance
- Open-weight models available for download
- Web-based chat interface
- API compatible with OpenAI format
DeepSeek is a Chinese AI research lab that develops open-weight large language models. Its DeepSeek-R1 model became a global phenomenon for matching frontier reasoning performance at a fraction of the training cost. DeepSeek offers a free web chat interface, an affordable API, and fully open model weights that can be self-hosted or fine-tuned.
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