From c4e5dbc38bfe5c3c4172b8f95f738196d4b6c12c Mon Sep 17 00:00:00 2001
From: KnyazSh <yuriy.shuyskiy@gmail.com>
Date: Fri, 17 Apr 2026 08:31:03 +0300
Subject: [PATCH] fix gigachat passthrough url, authenticator, get_api_base

---
 litellm/llms/gigachat/authenticator.py              | 6 ------
 litellm/llms/gigachat/passthrough/transformation.py | 6 +-----
 litellm/llms/gigachat/utils.py                      | 1 -
 3 files changed, 1 insertion(+), 12 deletions(-)

diff --git a/litellm/llms/gigachat/authenticator.py b/litellm/llms/gigachat/authenticator.py
index 83824c72fa7..1821a209fed 100644
--- a/litellm/llms/gigachat/authenticator.py
+++ b/litellm/llms/gigachat/authenticator.py
@@ -130,12 +130,6 @@ async def get_access_token_async(
     litellm_params: Optional[dict] = None,
 ) -> str:
     """Async version of get_access_token."""
-    credentials = credentials or _get_credentials()
-    if not credentials:
-        raise GigaChatAuthError(
-            status_code=401,
-            message="GigaChat credentials not provided. Set GIGACHAT_CREDENTIALS or GIGACHAT_API_KEY environment variable.",
-        )
     if not litellm_params:
         litellm_params = {}
 
diff --git a/litellm/llms/gigachat/passthrough/transformation.py b/litellm/llms/gigachat/passthrough/transformation.py
index 42bad43c79f..baf287b161f 100644
--- a/litellm/llms/gigachat/passthrough/transformation.py
+++ b/litellm/llms/gigachat/passthrough/transformation.py
@@ -36,12 +36,8 @@ class GigaChatPassthroughConfig(BasePassthroughConfig):
         if base_target_url is None:
             raise Exception("GigaChat api base not found")
 
-        litellm_metadata = litellm_params.get("litellm_metadata") or {}
-        model_group = litellm_metadata.get("model_group")
-        if model_group and model_group in endpoint:
-            endpoint = endpoint.replace(model_group, model)
+        complete_url = f"{base_target_url}/{endpoint.lstrip('/')}"
 
-        complete_url = f"{base_target_url}/chat/completions"
         return (
             httpx.URL(complete_url),
             base_target_url,
diff --git a/litellm/llms/gigachat/utils.py b/litellm/llms/gigachat/utils.py
index e79083f16fe..b66d25cbc0b 100644
--- a/litellm/llms/gigachat/utils.py
+++ b/litellm/llms/gigachat/utils.py
@@ -30,6 +30,5 @@ def convert_usage(usage_data: dict[str, int]) -> Usage:
     )
 
 
-@staticmethod
 def get_api_base(api_base: Optional[str] = None) -> Optional[str]:
     return api_base or get_secret_str("GIGACHAT_API_BASE") or GIGACHAT_BASE_URL