diff --git a/packages/coding-agent/src/core/model-resolver.ts b/packages/coding-agent/src/core/model-resolver.ts
index 441f47c16bd..16423d3fb46 100644
--- a/packages/coding-agent/src/core/model-resolver.ts
+++ b/packages/coding-agent/src/core/model-resolver.ts
@@ -18,7 +18,7 @@ import type { ModelRuntime } from "./model-runtime.ts";
 
 /** Default model IDs for each known provider */
 export const defaultModelPerProvider: Record<KnownProvider, string> = {
-	aimlapi: "openai/gpt-5.5-2026-04-23",
+	aimlapi: "openai/gpt-5.6-terra",
 	"amazon-bedrock": "us.anthropic.claude-opus-4-6-v1",
 	"ant-ling": "Ring-2.6-1T",
 	anthropic: "claude-opus-4-8",