From 156c1f4aeba0f96e6a585be4b15990da25b36353 Mon Sep 17 00:00:00 2001
From: YeonGyu-Kim <code.yeon.gyu@gmail.com>
Date: Thu, 2 Apr 2026 15:45:39 +0900
Subject: [PATCH] fix(models): mark gpt-4.1-mini and gpt-4.1-nano as supporting
 tool calls

Fixes #2923
---
 .../model-capabilities.generated.json         |  4 +--
 ...odel-capabilities-bundled-snapshot.test.ts | 34 +++++++++++++++++++
 2 files changed, 36 insertions(+), 2 deletions(-)
 create mode 100644 src/shared/model-capabilities-bundled-snapshot.test.ts

diff --git a/src/generated/model-capabilities.generated.json b/src/generated/model-capabilities.generated.json
index 91b952581..4d51ec888 100644
--- a/src/generated/model-capabilities.generated.json
+++ b/src/generated/model-capabilities.generated.json
@@ -12113,7 +12113,7 @@
       "family": "gpt-nano",
       "reasoning": false,
       "temperature": true,
-      "toolCall": false,
+      "toolCall": true,
       "modalities": {
         "input": [
           "text",
@@ -12274,7 +12274,7 @@
       "family": "gpt-mini",
       "reasoning": false,
       "temperature": true,
-      "toolCall": false,
+      "toolCall": true,
       "modalities": {
         "input": [
           "text",
diff --git a/src/shared/model-capabilities-bundled-snapshot.test.ts b/src/shared/model-capabilities-bundled-snapshot.test.ts
new file mode 100644
index 000000000..9fa742a87
--- /dev/null
+++ b/src/shared/model-capabilities-bundled-snapshot.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, test } from "bun:test"
+
+import { getBundledModelCapabilitiesSnapshot, getModelCapabilities } from "./model-capabilities"
+
+describe("bundled model capabilities snapshot", () => {
+  test("keeps GPT-4.1 OpenAI variants marked as supporting tool calls", () => {
+    // given
+    const bundledSnapshot = getBundledModelCapabilitiesSnapshot()
+    const modelIDs = [
+      "openai/gpt-4.1",
+      "openai/gpt-4.1-mini",
+      "openai/gpt-4.1-nano",
+    ]
+
+    // when
+    const results = modelIDs.map((modelID) =>
+      getModelCapabilities({
+        providerID: "openai",
+        modelID,
+        bundledSnapshot,
+      }),
+    )
+
+    // then
+    for (const result of results) {
+      expect(result.toolCall).toBe(true)
+      expect(result.diagnostics).toMatchObject({
+        resolutionMode: "snapshot-backed",
+        snapshot: { source: "bundled-snapshot" },
+        toolCall: { source: "bundled-snapshot" },
+      })
+    }
+  })
+})