From f4a7d4dc2c84b094192dba30522c475ced3293d6 Mon Sep 17 00:00:00 2001
From: Tam Nhu Tran <kaitran.ntt@gmail.com>
Date: Sat, 7 Mar 2026 15:18:16 +0700
Subject: [PATCH] fix(codex): standardize haiku defaults on gpt-5.1-codex-mini

---
 config/base-codex.settings.json                    |  2 +-
 tests/unit/cliproxy/variant-update-service.test.ts |  6 +++---
 ui/src/lib/model-catalogs.ts                       |  4 ++--
 ui/tests/unit/ui/lib/model-catalogs-codex.test.ts  | 13 +++++++++++++
 4 files changed, 19 insertions(+), 6 deletions(-)
 create mode 100644 ui/tests/unit/ui/lib/model-catalogs-codex.test.ts

diff --git a/config/base-codex.settings.json b/config/base-codex.settings.json
index 20621941..390d568d 100644
--- a/config/base-codex.settings.json
+++ b/config/base-codex.settings.json
@@ -5,6 +5,6 @@
     "ANTHROPIC_MODEL": "gpt-5.3-codex",
     "ANTHROPIC_DEFAULT_OPUS_MODEL": "gpt-5.3-codex",
     "ANTHROPIC_DEFAULT_SONNET_MODEL": "gpt-5.3-codex",
-    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-5-codex-mini"
+    "ANTHROPIC_DEFAULT_HAIKU_MODEL": "gpt-5.1-codex-mini"
   }
 }
diff --git a/tests/unit/cliproxy/variant-update-service.test.ts b/tests/unit/cliproxy/variant-update-service.test.ts
index af491a6a..28467094 100644
--- a/tests/unit/cliproxy/variant-update-service.test.ts
+++ b/tests/unit/cliproxy/variant-update-service.test.ts
@@ -112,7 +112,7 @@ cliproxy:
     expect(settings.env.ANTHROPIC_MODEL).toBe('gpt-5.1-codex-mini');
     expect(settings.env.ANTHROPIC_DEFAULT_OPUS_MODEL).toBe('gpt-5.1-codex-mini');
     expect(settings.env.ANTHROPIC_DEFAULT_SONNET_MODEL).toBe('gpt-5.1-codex-mini');
-    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5-mini');
+    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5.1-codex-mini');
     expect(settings.env.CUSTOM_FLAG).toBe('keep-me');
     expect(settings.hooks.PreToolUse.length).toBe(1);
 
@@ -134,7 +134,7 @@ cliproxy:
     expect(settings.env.ANTHROPIC_MODEL).toBe('gpt-5.3-codex');
     expect(settings.env.ANTHROPIC_DEFAULT_OPUS_MODEL).toBe('gpt-5.3-codex');
     expect(settings.env.ANTHROPIC_DEFAULT_SONNET_MODEL).toBe('gpt-5.3-codex');
-    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5-mini');
+    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5.1-codex-mini');
 
     const modelOnly = updateVariant('demo', { model: 'gpt-5.3-codex' });
     expect(modelOnly.success).toBe(true);
@@ -145,6 +145,6 @@ cliproxy:
     expect(settings.env.ANTHROPIC_MODEL).toBe('gpt-5.3-codex');
     expect(settings.env.ANTHROPIC_DEFAULT_OPUS_MODEL).toBe('gpt-5.3-codex');
     expect(settings.env.ANTHROPIC_DEFAULT_SONNET_MODEL).toBe('gpt-5.3-codex');
-    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5-mini');
+    expect(settings.env.ANTHROPIC_DEFAULT_HAIKU_MODEL).toBe('gpt-5.1-codex-mini');
   });
 });
diff --git a/ui/src/lib/model-catalogs.ts b/ui/src/lib/model-catalogs.ts
index 016d0564..bf4a44cb 100644
--- a/ui/src/lib/model-catalogs.ts
+++ b/ui/src/lib/model-catalogs.ts
@@ -121,7 +121,7 @@ export const MODEL_CATALOGS: Record<string, ProviderCatalog> = {
           default: 'gpt-5.3-codex',
           opus: 'gpt-5.3-codex',
           sonnet: 'gpt-5.3-codex',
-          haiku: 'gpt-5-mini',
+          haiku: 'gpt-5.1-codex-mini',
         },
       },
       {
@@ -132,7 +132,7 @@ export const MODEL_CATALOGS: Record<string, ProviderCatalog> = {
           default: 'gpt-5.2-codex',
           opus: 'gpt-5.2-codex',
           sonnet: 'gpt-5.2-codex',
-          haiku: 'gpt-5-mini',
+          haiku: 'gpt-5.1-codex-mini',
         },
       },
       {
diff --git a/ui/tests/unit/ui/lib/model-catalogs-codex.test.ts b/ui/tests/unit/ui/lib/model-catalogs-codex.test.ts
new file mode 100644
index 00000000..ed57cc8a
--- /dev/null
+++ b/ui/tests/unit/ui/lib/model-catalogs-codex.test.ts
@@ -0,0 +1,13 @@
+import { describe, expect, it } from 'vitest';
+import { MODEL_CATALOGS } from '@/lib/model-catalogs';
+
+describe('codex model catalog defaults', () => {
+  it('uses gpt-5.1-codex-mini as the haiku mapping for codex presets', () => {
+    const codexCatalog = MODEL_CATALOGS.codex;
+    const codex53 = codexCatalog.models.find((model) => model.id === 'gpt-5.3-codex');
+    const codex52 = codexCatalog.models.find((model) => model.id === 'gpt-5.2-codex');
+
+    expect(codex53?.presetMapping?.haiku).toBe('gpt-5.1-codex-mini');
+    expect(codex52?.presetMapping?.haiku).toBe('gpt-5.1-codex-mini');
+  });
+});