Deepseek V4 (#23882)

Co-authored-by: Baizhou Zhang <sobereddiezhang@gmail.com>
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Co-authored-by: fzyzcjy <ch271828n@outlook.com>
Co-authored-by: ispobock <ispobaoke@gmail.com>
Co-authored-by: Zhiqiang Xie <xiezhq@stanford.edu>
Co-authored-by: yueming-yuan <yym022502@gmail.com>
Co-authored-by: DarkSharpness <2040703891@qq.com>
Co-authored-by: Yuhao Yang <47235274+yhyang201@users.noreply.github.com>
Co-authored-by: yhyang201 <yhyang201@users.noreply.github.com>
Co-authored-by: yhyang201 <yhyang201@gmail.com>
Co-authored-by: Qiaolin Yu <90088090+qiaolin-yu@users.noreply.github.com>
Co-authored-by: Ethan (Yusheng) Su <11704492+yushengsu-thu@users.noreply.github.com>
Co-authored-by: Mingyi <27337995+wisclmy0611@users.noreply.github.com>
Co-authored-by: Cheng Wan <54331508+ch-wan@users.noreply.github.com>
Co-authored-by: Yihao Wang <42559837+againstentropy@users.noreply.github.com>

docs_new/cookbook/autoregressive/DeepSeek/DeepSeek-V4.mdx

@@ -159,10 +159,6 @@ PD-Disagg recipes on H200 may require `docker run --privileged --ulimit memlock=
 can discover the IB HCAs; without IB exposure mooncake silently falls back to
 TCP, which can lead to garbled KV transfer on large checkpoints.
 
-**Base model usage**
-
-In order to use base models, please enable `SGLANG_FIX_DSV4_BASE_MODEL_LOAD=1` and use latest code, before the next round of testing matrix is finished.
-
 **GB300 PD-Disagg cross-pod MNNVL**
 
 On some GB300 clusters with cross-pod KV transfer over NVLink, mooncake may