All modelsMODEL / FRONTIER COVERAGEDeepSeek-V4.1-FlashTYPEModelSIGNALS3FIRST SEENSep 10, 2026LAST SEENOct 20, 2026Recent signalsDeepSeek open-sources DeepInfer, its high-performance inference framework that powers its production services, starting with support for DeepSeek-V4.1-Flash (Saritha Rai/Bloomberg) Oct 20, 2026DeepSeek-V4.1-Flash on Fireworks: Astra-level DeepSWE at 1/15th the cost Sep 13, 2026DeepSeek debuts DeepSeek-V4.1-Flash, its smallest model built on its new Causal Encoder-Decoder architecture, with 552B backbone parameters and 1M-token context (Reuters) Sep 10, 2026RELATEDDeepSeekGPT-6 AstraOpen-weight modelsFireworks AIALL MODELSLATEST SIGNAL