diff --git a/simplemind/providers/openai.py b/simplemind/providers/openai.py
index 97b4a9a..58e4e21 100644
--- a/simplemind/providers/openai.py
+++ b/simplemind/providers/openai.py
@@ -15,8 +15,8 @@ T = TypeVar("T", bound=BaseModel)
 
 PROVIDER_NAME = "openai"
 DEFAULT_MODEL = "gpt-4o-mini"
-DEFAULT_MAX_TOKENS = 1_000
-DEFAULT_KWARGS = {"max_tokens": DEFAULT_MAX_TOKENS}
+DEFAULT_MAX_TOKENS = None
+DEFAULT_KWARGS = {}
 
 
 class OpenAI(BaseProvider):