From 9f063ed167df26c96f24853375b45a71e76bfaa1 Mon Sep 17 00:00:00 2001
From: Jack <jack@anoma.ly>
Date: Fri, 6 Mar 2026 14:24:35 +0800
Subject: [PATCH] add copilot gpt-5.4 xhigh

---
 packages/opencode/src/provider/transform.ts   |  4 ++-
 .../opencode/test/provider/transform.test.ts  | 29 +++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index 6980be05188..471da03cbce 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -440,7 +440,9 @@ export namespace ProviderTransform {
         const copilotEfforts = iife(() => {
           if (id.includes("5.1-codex-max") || id.includes("5.2") || id.includes("5.3"))
             return [...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
-          return WIDELY_SUPPORTED_EFFORTS
+          const arr = [...WIDELY_SUPPORTED_EFFORTS]
+          if (id.includes("gpt-5") && model.release_date >= "2025-12-04") arr.push("xhigh")
+          return arr
         })
         return Object.fromEntries(
           copilotEfforts.map((effort) => [
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index 2329846351c..512819a6577 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", () => {