diff --git a/codex-rs/core/src/model_family.rs b/codex-rs/core/src/model_family.rs
index 725a998be..93c12864d 100644
--- a/codex-rs/core/src/model_family.rs
+++ b/codex-rs/core/src/model_family.rs
@@ -187,6 +187,18 @@ pub fn find_family_for_model(slug: &str) -> Option<ModelFamily> {
         )
 
     // Production models.
+    } else if slug.starts_with("gpt-5.1-codex-max") {
+        model_family!(
+            slug, slug,
+            supports_reasoning_summaries: true,
+            reasoning_summary_format: ReasoningSummaryFormat::Experimental,
+            base_instructions: BASE_INSTRUCTIONS.to_string(),
+            apply_patch_tool_type: Some(ApplyPatchToolType::Freeform),
+            shell_type: ConfigShellToolType::ShellCommand,
+            supports_parallel_tool_calls: true,
+            support_verbosity: false,
+            truncation_policy: TruncationPolicy::Tokens(10_000),
+        )
     } else if slug.starts_with("gpt-5-codex")
         || slug.starts_with("gpt-5.1-codex")
         || slug.starts_with("codex-")
@@ -202,18 +214,6 @@ pub fn find_family_for_model(slug: &str) -> Option<ModelFamily> {
             support_verbosity: false,
             truncation_policy: TruncationPolicy::Tokens(10_000),
         )
-    } else if slug.starts_with("gpt-5.1-codex-max") {
-        model_family!(
-            slug, slug,
-            supports_reasoning_summaries: true,
-            reasoning_summary_format: ReasoningSummaryFormat::Experimental,
-            base_instructions: BASE_INSTRUCTIONS.to_string(),
-            apply_patch_tool_type: Some(ApplyPatchToolType::Freeform),
-            shell_type: ConfigShellToolType::ShellCommand,
-            supports_parallel_tool_calls: true,
-            support_verbosity: false,
-            truncation_policy: TruncationPolicy::Tokens(10_000),
-        )
     } else if slug.starts_with("gpt-5.1") {
         model_family!(
             slug, "gpt-5.1",