diff --git a/apps/x/packages/core/src/agents/runtime.ts b/apps/x/packages/core/src/agents/runtime.ts
index fea801de..36aafbd8 100644
--- a/apps/x/packages/core/src/agents/runtime.ts
+++ b/apps/x/packages/core/src/agents/runtime.ts
@@ -859,8 +859,8 @@ export async function* streamAgent({
     const isKgAgent = knowledgeGraphAgents.includes(state.agentName!);
     const isInlineTaskAgent = state.agentName === "inline_task_agent";
     const defaultModel = signedIn ? "gpt-5.4" : modelConfig.model;
-    const defaultKgModel = signedIn ? "gpt-5.4-mini" : defaultModel;
-    const defaultInlineTaskModel = signedIn ? "gpt-5.4" : defaultModel;
+    const defaultKgModel = signedIn ? "anthropic/claude-haiku-4.5" : defaultModel;
+    const defaultInlineTaskModel = signedIn ? "anthropic/claude-sonnet-4.6" : defaultModel;
     const modelId = isInlineTaskAgent
         ? defaultInlineTaskModel
         : (isKgAgent && modelConfig.knowledgeGraphModel)