diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index 5e9da5c0845c..7feb480ef35f 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -847,7 +847,10 @@ export function options(input: {
 }): Record<string, any> {
   const result: Record<string, any> = {}
 
-  if (input.model.api.npm === "@ai-sdk/google-vertex/anthropic") {
+  if (
+    input.model.api.npm === "@ai-sdk/google-vertex/anthropic" ||
+    (!input.model.api.id.includes("claude") && input.model.api.npm === "@ai-sdk/anthropic")
+  ) {
     result["toolStreaming"] = false
   }