diff --git a/packages/opencode/src/provider/transform.ts b/packages/opencode/src/provider/transform.ts
index c1846af70..e564c54a1 100644
--- a/packages/opencode/src/provider/transform.ts
+++ b/packages/opencode/src/provider/transform.ts
@@ -375,7 +375,8 @@ export namespace ProviderTransform {
           }
         }
         const copilotEfforts = iife(() => {
-          if (id.includes("5.1-codex-max") || id.includes("5.2")) return [...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
+          if (id.includes("5.1-codex-max") || id.includes("5.2") || id.includes("5.3"))
+            return [...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
           return WIDELY_SUPPORTED_EFFORTS
         })
         return Object.fromEntries(
@@ -422,7 +423,7 @@ export namespace ProviderTransform {
         if (id === "gpt-5-pro") return {}
         const openaiEfforts = iife(() => {
           if (id.includes("codex")) {
-            if (id.includes("5.2")) return [...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
+            if (id.includes("5.2") || id.includes("5.3")) return [...WIDELY_SUPPORTED_EFFORTS, "xhigh"]
             return WIDELY_SUPPORTED_EFFORTS
           }
           const arr = [...WIDELY_SUPPORTED_EFFORTS]