diff --git a/packages/opencode/src/session/llm.ts b/packages/opencode/src/session/llm.ts
index d651308032..033e4862ce 100644
--- a/packages/opencode/src/session/llm.ts
+++ b/packages/opencode/src/session/llm.ts
@@ -150,7 +150,14 @@ export namespace LLM {
       },
     )
 
-    const maxOutputTokens = isCodex ? undefined : undefined
+    const maxOutputTokens = isCodex
+      ? undefined
+      : ProviderTransform.maxOutputTokens(
+          input.model.api.npm,
+          params.options,
+          input.model.limit.output,
+          OUTPUT_TOKEN_MAX,
+        )
     log.info("max_output_tokens", {
       tokens: ProviderTransform.maxOutputTokens(
         input.model.api.npm,