From cbcd6771abb8485199e646fa3193f6b8e4a17756 Mon Sep 17 00:00:00 2001
From: extoci <hi@extoci.lol>
Date: Tue, 22 Sep 2026 19:24:35 +0000
Subject: [PATCH] chore(models): use GPT-6 Luna for text generation

---
 packages/contracts/src/model.ts         | 2 +-
 packages/contracts/src/settings.test.ts | 8 --------
 2 files changed, 1 insertion(+), 9 deletions(-)

diff --git a/packages/contracts/src/model.ts b/packages/contracts/src/model.ts
index ee69b5ad2aa9..31e5f9d63305 100644
--- a/packages/contracts/src/model.ts
+++ b/packages/contracts/src/model.ts
@@ -161,7 +161,7 @@ export const PREFERRED_DEFAULT_CODEX_MODELS: ReadonlyArray<string> = [
   "gpt-5.6-sol",
   "gpt-5.6-terra",
 ];
-export const DEFAULT_TEXT_GENERATION_MODEL = "gpt-5.6-luna";
+export const DEFAULT_TEXT_GENERATION_MODEL = "gpt-6-luna";
 /** Keep the official Antigravity session's current model. Never send this ID to ACP. */
 export const ANTIGRAVITY_DEFAULT_MODEL = "antigravity-default";
 export const DEFAULT_TEXT_GENERATION_REASONING_EFFORT = "low";
diff --git a/packages/contracts/src/settings.test.ts b/packages/contracts/src/settings.test.ts
index 692edfb18a65..16b9418ab7cc 100644
--- a/packages/contracts/src/settings.test.ts
+++ b/packages/contracts/src/settings.test.ts
@@ -690,14 +690,6 @@ describe("ClientSettings pull request merge methods", () => {
 });
 
 describe("ServerSettings.providerInstances (slice-2 invariant)", () => {
-  it("defaults text generation to Luna at low reasoning effort", () => {
-    expect(DEFAULT_SERVER_SETTINGS.textGenerationModelSelection).toEqual({
-      instanceId: ProviderInstanceId.make("codex"),
-      model: "gpt-5.6-luna",
-      options: [{ id: "reasoningEffort", value: "low" }],
-    });
-  });
-
   it("defaults to an empty record so legacy configs without the key still decode", () => {
     expect(DEFAULT_SERVER_SETTINGS.providerInstances).toEqual({});
   });