1 files changed, 16 insertions, 10 deletions

diff --git a/g4f/Provider/GeminiPro.py b/g4f/Provider/GeminiPro.py
index e1738dc8..792cd5d1 100644
--- a/g4f/Provider/GeminiPro.py
+++ b/g4f/Provider/GeminiPro.py
@@ -13,6 +13,7 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
     url = "https://ai.google.dev"
     working = True
     supports_message_history = True
+    needs_auth = True
     default_model = "gemini-pro"
     models = ["gemini-pro", "gemini-pro-vision"]
 
@@ -24,19 +25,24 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
         stream: bool = False,
         proxy: str = None,
         api_key: str = None,
+        api_base: str = None,
         image: ImageType = None,
         **kwargs
     ) -> AsyncResult:
         model = "gemini-pro-vision" if not model and image else model
         model = cls.get_model(model)
-        if not api_key:
-            raise MissingAuthError('Missing "api_key" for auth')
-        headers = {
-            "Content-Type": "application/json",
-        }
-        async with ClientSession(headers=headers) as session:
-            method = "streamGenerateContent" if stream else "generateContent"
-            url = f"https://generativelanguage.googleapis.com/v1beta/models/{model}:{method}"
+
+        if not api_key and not api_base:
+            raise MissingAuthError('Missing "api_key" or "api_base"')
+        if not api_base:
+            api_base = f"https://generativelanguage.googleapis.com/v1beta"
+
+        method = "streamGenerateContent" if stream else "generateContent"
+        url = f"{api_base.rstrip('/')}/models/{model}:{method}"
+        if api_key:
+            url += f"?key={api_key}"
+
+        async with ClientSession() as session:
             contents = [
                 {
                     "role": "model" if message["role"] == "assistant" else message["role"],
@@ -62,7 +68,7 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
                     "topK": kwargs.get("top_k"),
                 }
             }
-            async with session.post(url, params={"key": api_key}, json=data, proxy=proxy) as response:
+            async with session.post(url, json=data, proxy=proxy) as response:
                 if not response.ok:
                     data = await response.json()
                     raise RuntimeError(data[0]["error"]["message"])
@@ -78,7 +84,7 @@ class GeminiPro(AsyncGeneratorProvider, ProviderModelMixin):
                                 yield data["candidates"][0]["content"]["parts"][0]["text"]
                             except:
                                 data = data.decode() if isinstance(data, bytes) else data
-                                raise RuntimeError(f"Read text failed. data: {data}")
+                                raise RuntimeError(f"Read chunk failed. data: {data}")
                             lines = []
                         else:
                             lines.append(chunk)