diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index a294c568d7..66e87fb3b8 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -594,6 +594,9 @@ export function variants(model: Provider.Model): Record<string, Record<string, a
             {
               thinking: {
                 type: "adaptive",
+                ...(model.api.id.includes("opus-4-7") || model.api.id.includes("opus-4.7")
+                  ? { display: "summarized" }
+                  : {}),
               },
               effort,
             },
diff --git a/packages/opencode/test/provider/transform.test.ts b/packages/opencode/test/provider/transform.test.ts
index f92b448cf3..e195d9b177 100644
--- a/packages/opencode/test/provider/transform.test.ts
+++ b/packages/opencode/test/provider/transform.test.ts
@@ -2727,12 +2727,14 @@ describe("ProviderTransform.variants", () => {
       expect(result.xhigh).toEqual({
         thinking: {
           type: "adaptive",
+          display: "summarized",
         },
         effort: "xhigh",
       })
       expect(result.max).toEqual({
         thinking: {
           type: "adaptive",
+          display: "summarized",
         },
         effort: "max",
       })