diff --git a/src/agents/pi-embedded-runner/model.forward-compat.test.ts b/src/agents/pi-embedded-runner/model.forward-compat.test.ts
index 50ac667a37e..56fd4654e91 100644
--- a/src/agents/pi-embedded-runner/model.forward-compat.test.ts
+++ b/src/agents/pi-embedded-runner/model.forward-compat.test.ts
@@ -57,16 +57,6 @@ describe("pi embedded model e2e smoke", () => {
     expect(result.model).toMatchObject(buildOpenAICodexForwardCompatExpectation("gpt-5.4"));
   });
 
-  it("builds an openai-codex forward-compat fallback for gpt-5.3-codex-spark", () => {
-    mockOpenAICodexTemplateModel();
-
-    const result = resolveModel("openai-codex", "gpt-5.3-codex-spark", "/tmp/agent");
-    expect(result.error).toBeUndefined();
-    expect(result.model).toMatchObject(
-      buildOpenAICodexForwardCompatExpectation("gpt-5.3-codex-spark"),
-    );
-  });
-
   it("keeps unknown-model errors for non-forward-compat IDs", () => {
     const result = resolveModel("openai-codex", "gpt-4.1-mini", "/tmp/agent");
     expect(result.model).toBeUndefined();