diff --git a/.github/workflows/create-pr.yml b/.github/workflows/create-pr.yml
index 8ef5d8a..7f34fa8 100644
--- a/.github/workflows/create-pr.yml
+++ b/.github/workflows/create-pr.yml
@@ -210,7 +210,7 @@ jobs:
 
           # Create a proper JSON payload using jq to handle escaping
           PAYLOAD=$(jq -n \
-            --arg model "claude-sonnet-4-20250514" \
+            --arg model "${{ vars.CLAUDE_MODEL || 'claude-sonnet-4-6' }}" \
             --arg content "$PROMPT" \
             '{
               "model": $model,
diff --git a/.github/workflows/tag-release.yml b/.github/workflows/tag-release.yml
index b559ef8..3babd44 100644
--- a/.github/workflows/tag-release.yml
+++ b/.github/workflows/tag-release.yml
@@ -173,7 +173,7 @@ jobs:
 
           # Create a proper JSON payload using jq to handle escaping
           PAYLOAD=$(jq -n \
-            --arg model "claude-sonnet-4-20250514" \
+            --arg model "${{ vars.CLAUDE_MODEL || 'claude-sonnet-4-6' }}" \
             --arg content "$PROMPT" \
             '{
               "model": $model,