Switch default model (#634)

Author: adivate2021

src/judgeval/env.py

@@ -23,7 +23,9 @@ def optional_env_var(var_name: str, default: str | None = None) -> str | None:
 JUDGMENT_ORG_ID = optional_env_var("JUDGMENT_ORG_ID")
 JUDGMENT_API_URL = optional_env_var("JUDGMENT_API_URL", "https://api.judgmentlabs.ai")
 
-JUDGMENT_DEFAULT_GPT_MODEL = optional_env_var("JUDGMENT_DEFAULT_GPT_MODEL", "gpt-5")
+JUDGMENT_DEFAULT_GPT_MODEL = optional_env_var(
+    "JUDGMENT_DEFAULT_GPT_MODEL", "gpt-5-mini"
+)
 JUDGMENT_DEFAULT_TOGETHER_MODEL = optional_env_var(
     "JUDGMENT_DEFAULT_TOGETHER_MODEL", "meta-llama/Meta-Llama-3-8B-Instruct-Lite"
 )