diff --git a/codex-rs/model-provider/src/amazon_bedrock/catalog.rs b/codex-rs/model-provider/src/amazon_bedrock/catalog.rs
index 55e3fdd4d8..95e522e0c4 100644
--- a/codex-rs/model-provider/src/amazon_bedrock/catalog.rs
+++ b/codex-rs/model-provider/src/amazon_bedrock/catalog.rs
@@ -61,6 +61,8 @@ fn gpt_5_bedrock_model(openai_slug: &str, bedrock_slug: &str, priority: i32) ->
     model.priority = priority;
     model.context_window = Some(GPT_5_BEDROCK_CONTEXT_WINDOW);
     model.max_context_window = Some(GPT_5_BEDROCK_CONTEXT_WINDOW);
+    model.availability_nux = None;
+    model.upgrade = None;
     model
 }
 
@@ -127,6 +129,15 @@ mod tests {
         }
     }
 
+    #[test]
+    fn gpt_5_bedrock_models_do_not_include_availability_nux_or_upgrade() {
+        let catalog = static_model_catalog();
+
+        for model in catalog.models {
+            assert_eq!((model.availability_nux, model.upgrade), (None, None));
+        }
+    }
+
     #[test]
     fn gpt_5_6_bedrock_models_clone_gpt_5_5_config_with_max_reasoning_effort() {
         let catalog = static_model_catalog();