The whale has returned. After rocking the global AI and business community early this year with the January 20 initial release of its hit open source reasoning AI model R1, the Chinese startup DeepSeek — a spinoff of formerly only locally well-known Hong Kong quantitative analysis firm High-Flyer Capital Management — has released DeepSeek-R1-0528, a significant update that brings DeepSeek’s free and open model near parity in reasoning capabilities with proprietary paid models such as OpenAI’s o3 and Google Gemini 2.5 Pro. This update is designed to deliver stronger performance on complex reasoning tasks in math, science, business and programming, along with enhanced features for developers and researchers. Like its predecessor, DeepSeek-R1-0528 is available under the permissive and open MIT License, supporting commercial use and allowing developers to customize the model to their needs. Open-source model weights are available via the AI code sharing community Hugging Face, and detailed documentation is provided for those deploying locally or integrating via the DeepSeek API. Existing users of the DeepSeek API will automatically have their model inferences updated to R1-0528 at no additional cost.

Full report : Like its predecessor, DeepSeek-R1-0528 has an MIT License and model weights are on Hugging Face; DeepSeek API users will get to use the model at no extra cost.