diff --git a/.github/configs/nvidia-master.yaml b/.github/configs/nvidia-master.yaml
index 6bfd2ac9dc..0c29cfd85e 100644
--- a/.github/configs/nvidia-master.yaml
+++ b/.github/configs/nvidia-master.yaml
@@ -2660,13 +2660,13 @@ kimik2.5-fp4-b200-vllm:
     - isl: 1024
       osl: 1024
       search-space:
-      - { tp: 8, ep: 1, conc-start: 4, conc-end: 4 }
-      - { tp: 4, ep: 1, conc-start: 4, conc-end: 64 }
+      - { tp: 8, ep: 1, conc-start: 1, conc-end: 4 }
+      - { tp: 4, ep: 1, conc-start: 1, conc-end: 128 }
     - isl: 8192
       osl: 1024
       search-space:
-      - { tp: 8, ep: 1, conc-start: 4, conc-end: 4 }
-      - { tp: 4, ep: 1, conc-start: 4, conc-end: 64 }
+      - { tp: 8, ep: 1, conc-start: 1, conc-end: 4 }
+      - { tp: 4, ep: 1, conc-start: 1, conc-end: 128 }
 
 # NOTE: At the time of submission, https://docs.vllm.ai/projects/recipes/en/latest/moonshotai/Kimi-K2.5.html
 # does not have a B300-specific recipe, so this config reuses the existing
diff --git a/perf-changelog.yaml b/perf-changelog.yaml
index fbe943b5f7..129eb5b2c8 100644
--- a/perf-changelog.yaml
+++ b/perf-changelog.yaml
@@ -3508,3 +3508,9 @@
     - "Update vLLM image from v0.21.0 to v0.22.0"
     - "Expand concurrency sweep for the 1k/1k and 8k/1k cells: TP4/EP1 conc 4-64 -> 1-128, TP8/EP1 conc-start 4 -> 1 (conc-end 4 unchanged)."
   pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1674
+
+- config-keys:
+    - kimik2.5-fp4-b200-vllm
+  description:
+    - "Expand concurrency sweep for the 1k/1k and 8k/1k cells: TP4/EP1 conc 4-64 -> 1-128, TP8/EP1 conc-start 4 -> 1 (conc-end 4 unchanged)."
+  pr-link: https://github.com/SemiAnalysisAI/InferenceX/pull/1677