Update app.py

app.py

@@ -10,7 +10,7 @@ from huggingface_hub import InferenceClient
 
 HF_TOKEN = os.environ.get("HF_TOKEN")
 client = InferenceClient(
-    provider="sambanova", 
+    provider="fireworks-ai", 
     api_key=HF_TOKEN
 )
 
@@ -129,7 +129,7 @@ def generate_math_questions(grade, term, qtype="Unspecified", num_questions=10):
     # 使用 InferenceClient 呼叫 API 模型產生新題目
     completion = client.chat.completions.create(
         # model="mistralai/Mistral-7B-Instruct-v0.3",
-        model="deepseek-ai/DeepSeek-R1",
+        model="perplexity-ai/r1-1776",
         messages=messages,
         max_tokens=2048
     )