diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index ded416e66d9..c05bf75c46f 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -658,11 +658,18 @@ export namespace ProviderTransform {
   }
 
   export function smallOptions(model: Provider.Model) {
-    if (model.providerID === "openai" || model.api.id.includes("gpt-5")) {
-      if (model.api.id.includes("5.")) {
-        return { reasoningEffort: "low" }
+    if (
+      model.providerID === "openai" ||
+      model.api.npm === "@ai-sdk/openai" ||
+      model.api.npm === "@ai-sdk/github-copilot"
+    ) {
+      if (model.api.id.includes("gpt-5")) {
+        if (model.api.id.includes("5.")) {
+          return { store: false, reasoningEffort: "low" }
+        }
+        return { store: false, reasoningEffort: "minimal" }
       }
-      return { reasoningEffort: "minimal" }
+      return { store: false }
     }
     if (model.providerID === "google") {
       // gemini-3 uses thinkingLevel, gemini-2.5 uses thinkingBudget