1 files changed, 29 insertions, 0 deletions
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index 232984635..512819a65 100644
--- a/packages/opencode/test/provider/transform.test.ts
+++ b/packages/opencode/test/provider/transform.test.ts
@@ -2002,6 +2002,35 @@ describe("ProviderTransform.variants", () => {
       const result = ProviderTransform.variants(model)
       expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh"])
     })
+
+    test("gpt-5.3-codex includes xhigh", () => {
+      const model = createMockModel({
+        id: "gpt-5.3-codex",
+        providerID: "github-copilot",
+        api: {
+          id: "gpt-5.3-codex",
+          url: "https://api.githubcopilot.com",
+          npm: "@ai-sdk/github-copilot",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh"])
+    })
+
+    test("gpt-5.4 includes xhigh", () => {
+      const model = createMockModel({
+        id: "gpt-5.4",
+        release_date: "2026-03-05",
+        providerID: "github-copilot",
+        api: {
+          id: "gpt-5.4",
+          url: "https://api.githubcopilot.com",
+          npm: "@ai-sdk/github-copilot",
+        },
+      })
+      const result = ProviderTransform.variants(model)
+      expect(Object.keys(result)).toEqual(["low", "medium", "high", "xhigh"])
+    })
   })
 
   describe("@ai-sdk/cerebras", () => {