diff --git a/.github/actionlint.yaml b/.github/actionlint.yaml
index e660d2a9761..1c1fe163089 100644
--- a/.github/actionlint.yaml
+++ b/.github/actionlint.yaml
@@ -4,8 +4,8 @@
 self-hosted-runner:
   labels:
     # Blacksmith CI runners
-    - blacksmith-4vcpu-ubuntu-2404
-    - blacksmith-4vcpu-windows-2025
+    - blacksmith-8vcpu-ubuntu-2404
+    - blacksmith-8vcpu-windows-2025
 
 # Ignore patterns for known issues
 paths:
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cb67c442310..72bb509e034 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
   # Detect docs-only changes to skip heavy jobs (test, build, Windows, macOS, Android).
   # Lint and format always run. Fail-safe: if detection fails, run everything.
   docs-scope:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     outputs:
       docs_only: ${{ steps.check.outputs.docs_only }}
       docs_changed: ${{ steps.check.outputs.docs_changed }}
@@ -33,7 +33,7 @@ jobs:
   changed-scope:
     needs: [docs-scope]
     if: needs.docs-scope.outputs.docs_only != 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     outputs:
       run_node: ${{ steps.scope.outputs.run_node }}
       run_macos: ${{ steps.scope.outputs.run_macos }}
@@ -127,7 +127,7 @@ jobs:
   build-artifacts:
     needs: [docs-scope, changed-scope, check]
     if: needs.docs-scope.outputs.docs_only != 'true' && (github.event_name == 'push' || needs.changed-scope.outputs.run_node == 'true')
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -153,7 +153,7 @@ jobs:
   release-check:
     needs: [docs-scope, build-artifacts]
     if: github.event_name == 'push' && needs.docs-scope.outputs.docs_only != 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -177,7 +177,7 @@ jobs:
   checks:
     needs: [docs-scope, changed-scope, check]
     if: needs.docs-scope.outputs.docs_only != 'true' && (github.event_name == 'push' || needs.changed-scope.outputs.run_node == 'true')
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     strategy:
       fail-fast: false
       matrix:
@@ -244,7 +244,7 @@ jobs:
     name: "check"
     needs: [docs-scope]
     if: needs.docs-scope.outputs.docs_only != 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -263,7 +263,7 @@ jobs:
   check-docs:
     needs: [docs-scope]
     if: needs.docs-scope.outputs.docs_changed == 'true'
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -279,7 +279,7 @@ jobs:
         run: pnpm check:docs
 
   secrets:
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -306,10 +306,10 @@ jobs:
   checks-windows:
     needs: [docs-scope, changed-scope, build-artifacts, check]
     if: needs.docs-scope.outputs.docs_only != 'true' && (github.event_name == 'push' || needs.changed-scope.outputs.run_node == 'true')
-    runs-on: blacksmith-4vcpu-windows-2025
+    runs-on: blacksmith-8vcpu-windows-2025
     env:
       NODE_OPTIONS: --max-old-space-size=4096
-      # Keep total concurrency predictable on the 4 vCPU runner:
+      # Keep total concurrency predictable on the 8 vCPU runner:
       # `scripts/test-parallel.mjs` runs some vitest suites in parallel processes.
       OPENCLAW_TEST_WORKERS: 2
     defaults:
@@ -660,7 +660,7 @@ jobs:
   android:
     needs: [docs-scope, changed-scope, check]
     if: needs.docs-scope.outputs.docs_only != 'true' && (github.event_name == 'push' || needs.changed-scope.outputs.run_android == 'true')
-    runs-on: blacksmith-4vcpu-ubuntu-2404
+    runs-on: blacksmith-8vcpu-ubuntu-2404
     strategy:
       fail-fast: false
       matrix:
diff --git a/docs/ci.md b/docs/ci.md
index cdf5b126a28..70b5469edf2 100644
--- a/docs/ci.md
+++ b/docs/ci.md
@@ -36,8 +36,8 @@ Jobs are ordered so cheap checks fail before expensive ones run:
 
 | Runner                          | Jobs                          |
 | ------------------------------- | ----------------------------- |
-| `blacksmith-4vcpu-ubuntu-2404`  | Most Linux jobs               |
-| `blacksmith-4vcpu-windows-2025` | `checks-windows`              |
+| `blacksmith-8vcpu-ubuntu-2404`  | Most Linux jobs               |
+| `blacksmith-8vcpu-windows-2025` | `checks-windows`              |
 | `macos-latest`                  | `macos`, `ios`                |
 | `ubuntu-latest`                 | Scope detection (lightweight) |