diff --git a/src/tools/delegate-task/category-resolver.ts b/src/tools/delegate-task/category-resolver.ts
index ba7ce7c7f..a2f5bbd36 100644
--- a/src/tools/delegate-task/category-resolver.ts
+++ b/src/tools/delegate-task/category-resolver.ts
@@ -170,7 +170,8 @@ Available categories: ${categoryNames.join(", ")}`,
   }
 
   const unstableModel = actualModel?.toLowerCase()
-  const isUnstableAgent = resolved.config.is_unstable_agent === true || (unstableModel ? unstableModel.includes("gemini") || unstableModel.includes("minimax") : false)
+  const categoryConfigModel = resolved.config.model?.toLowerCase()
+  const isUnstableAgent = resolved.config.is_unstable_agent === true || [unstableModel, categoryConfigModel].some(m => m ? m.includes("gemini") || m.includes("minimax") || m.includes("kimi") : false)
 
   return {
     agentToUse: SISYPHUS_JUNIOR_AGENT,
diff --git a/src/tools/delegate-task/tools.test.ts b/src/tools/delegate-task/tools.test.ts
index 8ac91db68..b9b1274bc 100644
--- a/src/tools/delegate-task/tools.test.ts
+++ b/src/tools/delegate-task/tools.test.ts
@@ -2046,8 +2046,8 @@ describe("sisyphus-task", () => {
       expect(result).toContain("Artistry result here")
     }, { timeout: 20000 })
 
-    test("writing category (gemini-flash) with run_in_background=false should force background but wait for result", async () => {
-      // given - writing uses gemini-3-flash
+    test("writing category (kimi) with run_in_background=false should force background but wait for result", async () => {
+      // given - writing uses kimi-for-coding/k2p5
       const { createDelegateTask } = require("./tools")
       let launchCalled = false