diff --git a/agent/.env.example b/agent/.env.example
index 41f6ef26..65de82d8 100644
--- a/agent/.env.example
+++ b/agent/.env.example
@@ -16,5 +16,6 @@ SEARXNG_URL=
 TAVILY_API_KEY=
 
 LITELLM_DATABASE_URL=postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/litellm
+LITELLM_MASTER_KEY=sk-litellm-master-key
 # generate using `openssl rand -hex 32`
-LITELLM_MASTER_KEY=
+LITELLM_SALT_KEY=
diff --git a/agent/litellm/config.yaml b/agent/litellm/config.yaml
index 4b0f2c8b..cb47cb8b 100644
--- a/agent/litellm/config.yaml
+++ b/agent/litellm/config.yaml
@@ -24,9 +24,9 @@ router_settings:
         role: system
   default_fallbacks: [complex, medium, simple]
   fallbacks:
-    - reasoning: complex
-    - complex: medium
-    - medium: simple
+    - reasoning: [complex, medium, simple]
+    - complex: [medium, simple]
+    - medium: [simple]
 
 model_list:
   - model_name: auto
@@ -54,13 +54,13 @@ model_list:
 
   - model_name: complex
     litellm_params:
-      model: openai/tencent/hy3:free
-      litellm_credential_name: nous
+      model: openai/deepseek-v4-flash-free
+      litellm_credential_name: opencode_zen
 
   - model_name: reasoning
     litellm_params:
-      model: openai/tencent/hy3:free
-      litellm_credential_name: nous
+      model: openai/deepseek-v4-flash-free
+      litellm_credential_name: opencode_zen
 
   - model_name: cerebras/gemma-4-31b
     litellm_params:
@@ -78,11 +78,6 @@ model_list:
     litellm_params:
       model: groq/openai/gpt-oss-120b
 
-  - model_name: nous/hy3:free
-    litellm_params:
-      model: openai/tencent/hy3:free
-      litellm_credential_name: nous
-
   - model_name: opencode-zen/deepseek-v4-flash-free
     litellm_params:
       model: openai/deepseek-v4-flash-free