diff --git a/codex-rs/core/src/openai_model_info.rs b/codex-rs/core/src/openai_model_info.rs
index 6fbe99ff..3df00fbb 100644
--- a/codex-rs/core/src/openai_model_info.rs
+++ b/codex-rs/core/src/openai_model_info.rs
@@ -61,6 +61,12 @@ pub(crate) fn get_model_info(model_family: &ModelFamily) -> Option<ModelInfo> {
         // https://platform.openai.com/docs/models/gpt-3.5-turbo
         "gpt-3.5-turbo" => Some(ModelInfo::new(16_385, 4_096)),
 
+        _ if slug.starts_with("gpt-5-codex") => Some(ModelInfo {
+            context_window: 272_000,
+            max_output_tokens: 128_000,
+            auto_compact_token_limit: Some(220_000),
+        }),
+
         _ if slug.starts_with("gpt-5") => Some(ModelInfo::new(272_000, 128_000)),
 
         _ if slug.starts_with("codex-") => Some(ModelInfo::new(272_000, 128_000)),