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DeepSeek
A Chinese lab known for capable, cost-efficient open-weight and reasoning models.
Definition
DeepSeek is a Chinese AI lab, founded in 2023 as a subsidiary of the hedge fund High-Flyer, that gained wide attention for releasing capable open-weight models trained cost-efficiently, including reasoning-focused models like DeepSeek-R1. Its releases reshaped industry discussion about training efficiency, mixture-of-experts designs (which save effort by using only the relevant parts of a model for each request), and the competitiveness of open models.