diff --git a/.env_example b/.env_example
index 0f2030db0f..3cae9607db 100644
--- a/.env_example
+++ b/.env_example
@@ -180,12 +180,12 @@ AZURE_OPENAI_GPT5_UNDERLYING_MODEL="gpt-5"
 
 PLATFORM_OPENAI_RESPONSES_ENDPOINT="https://api.openai.com/v1"
 PLATFORM_OPENAI_RESPONSES_KEY="sk-xxxxx"
-PLATFORM_OPENAI_RESPONSES_MODEL="o4-mini"
+PLATFORM_OPENAI_RESPONSES_MODEL="gpt-5.6-terra"
 
 AZURE_OPENAI_RESPONSES_ENDPOINT="https://xxxxx.openai.azure.com/openai/v1"
 AZURE_OPENAI_RESPONSES_KEY="xxxxx"
-AZURE_OPENAI_RESPONSES_MODEL="o4-mini"
-AZURE_OPENAI_RESPONSES_UNDERLYING_MODEL="o4-mini"
+AZURE_OPENAI_RESPONSES_MODEL="gpt-5.6-terra"
+AZURE_OPENAI_RESPONSES_UNDERLYING_MODEL="gpt-5.6-terra"
 
 OPENAI_RESPONSES_ENDPOINT=${PLATFORM_OPENAI_RESPONSES_ENDPOINT}
 OPENAI_RESPONSES_KEY=${PLATFORM_OPENAI_RESPONSES_KEY}