diff --git a/packages/opencode/test/provider/gitlab-duo.test.ts b/packages/opencode/test/provider/gitlab-duo.test.ts
index c512a45909d8..01c6ed2af928 100644
--- a/packages/opencode/test/provider/gitlab-duo.test.ts
+++ b/packages/opencode/test/provider/gitlab-duo.test.ts
@@ -257,6 +257,7 @@ test("GitLab Duo: has multiple agentic chat models available", async () => {
       expect(models).toContain("duo-chat-haiku-4-5")
       expect(models).toContain("duo-chat-sonnet-4-5")
       expect(models).toContain("duo-chat-opus-4-5")
+      expect(models).toContain("duo-chat-opus-4-6")
     },
   })
 })
diff --git a/packages/opencode/test/tool/fixtures/models-api.json b/packages/opencode/test/tool/fixtures/models-api.json
index 391e783699e9..ab9b912818a4 100644
--- a/packages/opencode/test/tool/fixtures/models-api.json
+++ b/packages/opencode/test/tool/fixtures/models-api.json
@@ -32970,6 +32970,22 @@
         "cost": { "input": 0, "output": 0, "cache_read": 0, "cache_write": 0 },
         "limit": { "context": 200000, "output": 64000 }
       },
+      "duo-chat-opus-4-6": {
+        "id": "duo-chat-opus-4-6",
+        "name": "Agentic Chat (Claude Opus 4.6)",
+        "family": "claude-opus",
+        "attachment": true,
+        "reasoning": true,
+        "tool_call": true,
+        "temperature": true,
+        "knowledge": "2025-04-30",
+        "release_date": "2026-02-05",
+        "last_updated": "2026-02-05",
+        "modalities": { "input": ["text", "image", "pdf"], "output": ["text"] },
+        "open_weights": false,
+        "cost": { "input": 0, "output": 0, "cache_read": 0, "cache_write": 0 },
+        "limit": { "context": 200000, "output": 128000 }
+      },
       "duo-chat-sonnet-4-5": {
         "id": "duo-chat-sonnet-4-5",
         "name": "Agentic Chat (Claude Sonnet 4.5)",