diff --git a/.env b/.env
index 2167011..e83ae16 100644
--- a/.env
+++ b/.env
@@ -6,7 +6,9 @@ DJANGO_ALLOWED_HOSTS=*
 LLM_PROVIDER=openai_compatible
 LLM_API_KEY=sk-pgvkjondmmrlyxmrfhotgpuirgbtgzrpjpweorhwruflxmxw
 LLM_BASE_URL=https://api.siliconflow.cn/v1
-LLM_MODEL=Qwen/Qwen2.5-7B-Instruct
+LLM_MODEL=deepseek-ai/DeepSeek-V4-Pro
+SILICONFLOW_EMBEDDING_MODEL=Qwen/Qwen3-Embedding-8B
+SILICONFLOW_EMBEDDING_DIMENSIONS=4096
 
 # SiliconFlow embedding model for RAG
 EMBEDDING_API_KEY=sk-pgvkjondmmrlyxmrfhotgpuirgbtgzrpjpweorhwruflxmxw
diff --git a/config/settings.py b/config/settings.py
index c996115..e971017 100644
--- a/config/settings.py
+++ b/config/settings.py
@@ -119,7 +119,7 @@ REGULATORY_LLM_REVIEW_MAX_ATTEMPTS = int(os.environ.get("REGULATORY_LLM_REVIEW_M
 REGULATORY_LLM_REVIEW_RETRY_DELAY_SECONDS = float(os.environ.get("REGULATORY_LLM_REVIEW_RETRY_DELAY_SECONDS", "0.5"))
 REGULATORY_LLM_REVIEW_TIMEOUT_SECONDS = float(os.environ.get("REGULATORY_LLM_REVIEW_TIMEOUT_SECONDS", "15"))
 SILICONFLOW_BASE_URL = os.environ.get("SILICONFLOW_BASE_URL", "https://api.siliconflow.cn/v1")
-SILICONFLOW_API_KEY = os.environ.get("SILICONFLOW_API_KEY", "")
+SILICONFLOW_API_KEY = os.environ.get("SILICONFLOW_API_KEY", LLM_API_KEY)
 SILICONFLOW_EMBEDDING_MODEL = os.environ.get(
     "SILICONFLOW_EMBEDDING_MODEL",
     "Qwen/Qwen3-Embedding-4B",