From e7ef503c5ea19c28d1789ad84c55232e876c4281 Mon Sep 17 00:00:00 2001
From: Adam Bowker <adam.b@posthog.com>
Date: Thu, 2 Apr 2026 14:00:04 -0700
Subject: [PATCH] fix(code): force sub-agents to use sonnet

---
 packages/agent/src/adapters/claude/session/options.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/agent/src/adapters/claude/session/options.ts b/packages/agent/src/adapters/claude/session/options.ts
index e97e12656..503b374af 100644
--- a/packages/agent/src/adapters/claude/session/options.ts
+++ b/packages/agent/src/adapters/claude/session/options.ts
@@ -97,6 +97,7 @@ function buildEnvironment(): Record<string, string> {
     CLAUDE_CODE_ENABLE_ASK_USER_QUESTION_TOOL: "true",
     // Offload all MCP tools by default
     ENABLE_TOOL_SEARCH: "auto:0",
+    CLAUDE_CODE_SUBAGENT_MODEL: "sonnet",
   };
 }