From a27f7fe56c2868d89a60db534f9dcd041fe2fdda Mon Sep 17 00:00:00 2001
From: Mitch Devenport <88671039+mitchdevenport@users.noreply.github.com>
Date: Wed, 26 Aug 2026 16:20:21 -0400
Subject: [PATCH] fix(github-copilot): allow xhigh and max thinking levels on
 claude-opus-5 (#129690)

* fix(github-copilot): allow xhigh and max thinking levels on claude-opus-5

Copilot users could not select thinking levels above `high` on
`claude-opus-5`. Both `/think xhigh` and `/think max` were rejected and the
picker offered only up to `high`, even with `thinkingDefault: "max"` set.

The bundled manifest entry declared no `supportedReasoningEfforts`, so
`resolveCopilotThinkingLevelMap()` in extensions/github-copilot/models.ts
returned undefined and `clampThinkingLevel()` filtered both tiers out.

A user-side `models.providers` overlay cannot fix this: models.ts
short-circuits `resolveCopilotForwardCompatModel()` when the model is
already in the bundled registry, so the only path that applies a
`thinkingLevelMap` is never reached. The native Claude fallback does not
apply either, since model-utils.ts only consults it for
`api === "anthropic-messages"` routes and Copilot resolves through its
OpenAI-compatible transport.

Declares the effort list the same way extensions/opencode already does for
the same model id. Verified on a live account: after this change `xhigh`
and `max` are selectable and accepted at runtime.

* test(github-copilot): cover Opus 5 manifest reasoning levels

---------

Co-authored-by: mitch <mitch@mitchs-MacBook-Pro.local>
Co-authored-by: Peter Steinberger <steipete@gmail.com>
---
 extensions/github-copilot/index.test.ts       | 20 +++++++++++++++++++
 .../github-copilot/openclaw.plugin.json       |  6 +++++-
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/extensions/github-copilot/index.test.ts b/extensions/github-copilot/index.test.ts
index 5b0deb9953b8..755261b0f74f 100644
--- a/extensions/github-copilot/index.test.ts
+++ b/extensions/github-copilot/index.test.ts
@@ -607,6 +607,26 @@ describe("github-copilot plugin", () => {
     expect(profile?.levels.map((level) => level.id)).toContain("xhigh");
   });
 
+  it("exposes xhigh and max thinking for the bundled Claude Opus 5 model", () => {
+    const provider = registerProviderWithPluginConfig({});
+    const model = expectDefined(
+      manifest.modelCatalog.providers["github-copilot"].models.find(
+        (candidate) => candidate.id === "claude-opus-5",
+      ),
+      "bundled GitHub Copilot Claude Opus 5 model",
+    );
+
+    const profile = provider.resolveThinkingProfile({
+      provider: "github-copilot",
+      modelId: model.id,
+      compat: model.compat,
+    });
+
+    expect(profile?.levels.map((level) => level.id)).toEqual(
+      expect.arrayContaining(["xhigh", "max"]),
+    );
+  });
+
   it("exposes max thinking for catalog-supported Copilot reasoning efforts", () => {
     const provider = registerProviderWithPluginConfig({});
 
diff --git a/extensions/github-copilot/openclaw.plugin.json b/extensions/github-copilot/openclaw.plugin.json
index 25b0591a59e2..1c477f9bd08b 100644
--- a/extensions/github-copilot/openclaw.plugin.json
+++ b/extensions/github-copilot/openclaw.plugin.json
@@ -44,7 +44,11 @@
             "contextWindow": 1000000,
             "maxTokens": 128000,
             "cost": { "input": 5, "output": 25, "cacheRead": 0.5, "cacheWrite": 6.25 },
-            "compat": { "codeMode": "capable" }
+            "compat": {
+              "codeMode": "capable",
+              "supportsReasoningEffort": true,
+              "supportedReasoningEfforts": ["low", "medium", "high", "xhigh", "max"]
+            }
           },
           {
             "id": "claude-sonnet-5",