DeepSeek-V4.1-Flash Released
CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins85% CONFIDENCEOverall confidence: 85%How well the pin's source and references back up its dates.Weighted average of how firmly 7 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or betterDeepSeek's[1][2][3] announcement is dated "September 10, 2026" and says "V4.1-Flash is now live on the DeepSeek API"; its API-docs changelog lists "DeepSeek-V4.1-Flash Release 2026/09/10", and Reuters reports DeepSeek "today (10 September) launched DeepSeek-V4.1-Flash".
DeepSeek releases DeepSeek-V4.1-Flash, an open-weight 552-billion-parameter multimodal model that it says beats its own flagship V4-Pro, and routes all V4-Pro API traffic to it at Flash prices.
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