diff --git a/product_management/__init__.py b/product_management/__init__.py
index 80fda7c..ef42251 100644
--- a/product_management/__init__.py
+++ b/product_management/__init__.py
@@ -100,6 +100,15 @@ async def calculate_product_cost(product_id=None, product_code=None, usage_data=
     return await manager.calculate_product_cost(product_id, product_code, usage_data, user_org_id)
 
 
+async def llm_id_to_product_id(llm_id):
+    """Convert LLM model ID (llmage.llm.id) to product ID (product.id).
+
+    Uses the product.resource_ref_id → llm.id mapping established during import.
+    """
+    manager = get_manager()
+    return await manager.llm_id_to_product_id(llm_id)
+
+
 def load_product_management():
     """Register all functions with ServerEnv so they can be called from .ui/.dspy files."""
     env = ServerEnv()
@@ -118,4 +127,5 @@ def load_product_management():
     env.execute_product = execute_product
     env.execute_product_stream = execute_product_stream
     env.calculate_product_cost = calculate_product_cost
+    env.llm_id_to_product_id = llm_id_to_product_id
     return True
diff --git a/product_management/core.py b/product_management/core.py
index acae3e3..8610ca4 100644
--- a/product_management/core.py
+++ b/product_management/core.py
@@ -1327,3 +1327,18 @@ class ProductManager:
             user_org_id = self._get_current_org_id()
 
         return await fn(ref_id, usage_data or {}, user_org_id)
+
+    async def llm_id_to_product_id(self, llm_id):
+        """Convert LLM model ID (llmage.llm.id) to product ID (product.id).
+
+        Uses resource_ref_id mapping: product.resource_ref_id = llm.id
+        and product.product_type = 'llm_model'.
+        """
+        dbname = self._get_dbname()
+        async with DBPools().sqlorContext(dbname) as sor:
+            sql = """SELECT id FROM product
+WHERE resource_ref_id = ${llm_id}$ AND product_type = 'llm_model' LIMIT 1"""
+            recs = await sor.sqlExe(sql, {'llm_id': llm_id})
+            if recs:
+                return recs[0].id
+            return None