diff --git a/agent/nodes/model.ts b/agent/nodes/model.ts
index a251e1d..77647b6 100644
--- a/agent/nodes/model.ts
+++ b/agent/nodes/model.ts
@@ -9,7 +9,7 @@ export function createModelNode(tools: any, promptPath: string): GraphNode<typeo
         const sysPrompt = await hydratePrompt(promptPath, state);
 
         const model = new ChatOpenAI({
-            model: "gpt-5-mini"
+            model: "gpt-5.4-nano"
         });
         const modelWithTools = model.bindTools(Object.values(tools));