diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index 18d95d0..0f196ff 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -31,8 +31,24 @@ jobs:
     - name: Build package
       run: poetry build
 
+    - name: Check version change
+      id: check_version
+      run: |
+        git fetch origin main
+        # Extract version from current pyproject.toml
+        current_version=$(poetry version -s)
+        # Extract version from main branch pyproject.toml
+        main_version=$(git show origin/main:pyproject.toml | grep "^version = " | cut -d'"' -f2)
+        if [ "$current_version" != "$main_version" ]; then
+          echo "Version changed from $main_version to $current_version"
+          echo "version_changed=true" >> $GITHUB_OUTPUT
+        else
+          echo "Version unchanged"
+          echo "version_changed=false" >> $GITHUB_OUTPUT
+        fi
+
     - name: Publish to PyPI
-      if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+      if: github.event_name == 'push' && github.ref == 'refs/heads/main' && steps.check_version.outputs.version_changed == 'true'
       uses: pypa/gh-action-pypi-publish@v1.4.2
       with:
         user: __token__
diff --git a/extract_thinker/llm.py b/extract_thinker/llm.py
index 3923a36..1af1218 100644
--- a/extract_thinker/llm.py
+++ b/extract_thinker/llm.py
@@ -59,10 +59,4 @@ def request(
                     messages=messages
                 )
 
-        return response
-
-    def batch_request(self, batch_requests: List[Dict[str, Any]]) -> str:
-        return self.batch_client.create_batch(batch_requests)
-
-    def retrieve_batch_results(self, batch_id: str) -> BatchResult:
-        return self.batch_client.get_batch_results(batch_id)
+        return response
\ No newline at end of file