diff --git a/packages/llms/src/utils.ts b/packages/llms/src/utils.ts
index 462906c..87dd80d 100644
--- a/packages/llms/src/utils.ts
+++ b/packages/llms/src/utils.ts
@@ -81,7 +81,9 @@ export function modelPatch(body: Record<string, any>) {
 
 		// *-chat-latest models don't support reasoning_effort — skip patches that set it
 		if (modelName.includes('chat-latest')) {
-			debug('Skipping reasoning_effort patch for chat-latest model')
+			debug('Omitting reasoning_effort and temperature for chat-latest')
+			delete body.reasoning_effort
+			delete body.temperature
 		} else if (modelName.startsWith('gpt-52')) {
 			debug('Applying GPT-52 patch: disable reasoning')
 			body.reasoning_effort = 'none'