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DeepSeek formally launches V4.1 Flash, routes V4 Pro requests to Flash

This story is from 2026-09-10. It is preserved in the archive; the latest stories are on the live feed.

DeepSeek on Sept. 10 formally released its V4.1 Flash model and introduced new Flash-series pricing, according to a notification sent to API users. DeepSeek said that V4.1 Flash had surpassed V4 Pro in performance, cost, speed and total completion time in internal and external testing. Starting Sep…

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  1. 2026-09-10 06:21 · TechNode
    DeepSeek formally launches V4.1 Flash, routes V4 Pro requests to Flash

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