v3.2: Fix Anthropic API endpoint for z.ai

app.py

@@ -10,29 +10,26 @@ from models import (
     HealthResponse, ZaiModel
 )
 
-# z.ai API Konfiguration
+# z.ai API - LiteLLM expects ANTHROPIC_BASE_URL without /v1
 ZAI_API_KEY = os.environ.get("ZAI_API_KEY", "")
-ZAI_BASE_URL = "https://api.z.ai/api/anthropic"
 
-# LiteLLM Anthropic-Konfiguration
+# LiteLLM wird {ANTHROPIC_BASE_URL}/v1/messages aufrufen
 os.environ["ANTHROPIC_API_KEY"] = ZAI_API_KEY
-os.environ["ANTHROPIC_BASE_URL"] = ZAI_BASE_URL
+os.environ["ANTHROPIC_BASE_URL"] = "https://api.z.ai/api/anthropic"
 
 data_designer = None
-zai_provider = None
 
 
 @asynccontextmanager
 async def lifespan(app: FastAPI):
-    global data_designer, zai_provider
+    global data_designer
     from data_designer.interface import DataDesigner
     from data_designer.config.models import ModelProvider
     
-    # Custom "anthropic" Provider registrieren
-    # provider_type="openai" ist Pflicht, aber LiteLLM erkennt "anthropic/" Prefix
+    # Custom Provider mit z.ai Endpunkt
     zai_provider = ModelProvider(
         name="anthropic",
-        endpoint=ZAI_BASE_URL,
+        endpoint="https://api.z.ai/api/anthropic",
         provider_type="openai",
         api_key="ZAI_API_KEY",
     )
@@ -47,7 +44,7 @@ async def lifespan(app: FastAPI):
 app = FastAPI(
     title="NeMo DataDesigner API",
     description="Synthetic data generation with DataDesigner + z.ai",
-    version="3.1.0",
+    version="3.2.0",
     lifespan=lifespan
 )
 
@@ -88,7 +85,6 @@ def build_config(request):
                 )
             )
 
-    # "anthropic/" Prefix sagt LiteLLM, dass es das Anthropic-Protokoll nutzen soll
     model_config = ModelConfig(
         alias="zai-model",
         model=f"anthropic/{model_id}",