diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index fe2484785..28e8d97ab 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -476,6 +476,13 @@ export namespace ProviderTransform {
       result["chat_template_args"] = { enable_thinking: true }
     }
 
+    if (["zai", "zhipuai"].includes(model.providerID) && model.api.npm === "@ai-sdk/openai-compatible") {
+      result["thinking"] = {
+        type: "enabled",
+        clear_thinking: false,
+      }
+    }
+
     if (model.providerID === "openai" || providerOptions?.setCacheKey) {
       result["promptCacheKey"] = sessionID
     }