DeepSeek models

DeepSeek V-series open-weight model family. Runs a standing peak and off-peak pricing schedule on its API rather than a single flat rate.

• DeepSeek V4.1 Flashactive
• DeepSeek V4 Flashretired, archived
• DeepSeek V4 Proactive
• DeepSeek Chat (legacy alias)retired, archived
• DeepSeek Reasoner (legacy alias)retired, archived

Every fact on these pages is dated and links to a page DeepSeek publishes itself.