From 6e930c972487cefe96d723349e8351fd0a028bda Mon Sep 17 00:00:00 2001
From: ryan-crabbe <128659760+ryan-crabbe@users.noreply.github.com>
Date: Fri, 23 Jan 2026 17:21:41 -0800
Subject: [PATCH] perf: skip pattern_router.route() for non-wildcard models
 (#19664)

Check "*" in model before calling pattern_router.route() to avoid
unnecessary pattern matching for non-wildcard model configurations.
---
 litellm/router.py | 27 ++++++++++++++-------------
 1 file changed, 14 insertions(+), 13 deletions(-)

diff --git a/litellm/router.py b/litellm/router.py
index 62070d23755..c53f54984f8 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -6355,19 +6355,20 @@ class Router:
         elif custom_llm_provider != "azure":
             model = _model
 
-            potential_models = self.pattern_router.route(received_model_name)
-            if "*" in model and potential_models is not None:  # if wildcard route
-                for potential_model in potential_models:
-                    try:
-                        if potential_model.get("model_info", {}).get(
-                            "id"
-                        ) == deployment.get("model_info", {}).get("id"):
-                            model = potential_model.get("litellm_params", {}).get(
-                                "model"
-                            )
-                            break
-                    except Exception:
-                        pass
+            if "*" in model:  # only call pattern_router for wildcard models
+                potential_models = self.pattern_router.route(received_model_name)
+                if potential_models is not None:
+                    for potential_model in potential_models:
+                        try:
+                            if potential_model.get("model_info", {}).get(
+                                "id"
+                            ) == deployment.get("model_info", {}).get("id"):
+                                model = potential_model.get("litellm_params", {}).get(
+                                    "model"
+                                )
+                                break
+                        except Exception:
+                            pass
 
         ## GET LITELLM MODEL INFO - raises exception, if model is not mapped
         if model is None: