diff --git a/hermes_cli/codex_models.py b/hermes_cli/codex_models.py
index 9fe3467145..169c63e8ac 100644
--- a/hermes_cli/codex_models.py
+++ b/hermes_cli/codex_models.py
@@ -18,6 +18,36 @@ DEFAULT_CODEX_MODELS: List[str] = [
     "gpt-5.1-codex-mini",
 ]
 
+_FORWARD_COMPAT_TEMPLATE_MODELS: List[tuple[str, tuple[str, ...]]] = [
+    ("gpt-5.3-codex", ("gpt-5.2-codex",)),
+    ("gpt-5.4", ("gpt-5.3-codex", "gpt-5.2-codex")),
+    ("gpt-5.3-codex-spark", ("gpt-5.3-codex", "gpt-5.2-codex")),
+]
+
+
+def _add_forward_compat_models(model_ids: List[str]) -> List[str]:
+    """Add Clawdbot-style synthetic forward-compat Codex models.
+
+    If a newer Codex slug isn't returned by live discovery, surface it when an
+    older compatible template model is present. This mirrors Clawdbot's
+    synthetic catalog / forward-compat behavior for GPT-5 Codex variants.
+    """
+    ordered: List[str] = []
+    seen: set[str] = set()
+    for model_id in model_ids:
+        if model_id not in seen:
+            ordered.append(model_id)
+            seen.add(model_id)
+
+    for synthetic_model, template_models in _FORWARD_COMPAT_TEMPLATE_MODELS:
+        if synthetic_model in seen:
+            continue
+        if any(template in seen for template in template_models):
+            ordered.append(synthetic_model)
+            seen.add(synthetic_model)
+
+    return ordered
+
 
 def _fetch_models_from_api(access_token: str) -> List[str]:
     """Fetch available models from the Codex API. Returns visible models sorted by priority."""
@@ -54,7 +84,7 @@ def _fetch_models_from_api(access_token: str) -> List[str]:
         sortable.append((rank, slug))
 
     sortable.sort(key=lambda x: (x[0], x[1]))
-    return [slug for _, slug in sortable]
+    return _add_forward_compat_models([slug for _, slug in sortable])
 
 
 def _read_default_model(codex_home: Path) -> Optional[str]:
@@ -125,7 +155,7 @@ def get_codex_model_ids(access_token: Optional[str] = None) -> List[str]:
     if access_token:
         api_models = _fetch_models_from_api(access_token)
         if api_models:
-            return api_models
+            return _add_forward_compat_models(api_models)
 
     # Fall back to local sources
     default_model = _read_default_model(codex_home)
@@ -140,4 +170,4 @@ def get_codex_model_ids(access_token: Optional[str] = None) -> List[str]:
         if model_id not in ordered:
             ordered.append(model_id)
 
-    return ordered
+    return _add_forward_compat_models(ordered)
diff --git a/tests/test_codex_models.py b/tests/test_codex_models.py
index 7148c659f9..32fe631535 100644
--- a/tests/test_codex_models.py
+++ b/tests/test_codex_models.py
@@ -52,6 +52,19 @@ def test_get_codex_model_ids_falls_back_to_curated_defaults(tmp_path, monkeypatc
     models = get_codex_model_ids()
 
     assert models[: len(DEFAULT_CODEX_MODELS)] == DEFAULT_CODEX_MODELS
+    assert "gpt-5.4" in models
+    assert "gpt-5.3-codex-spark" in models
+
+
+def test_get_codex_model_ids_adds_forward_compat_models_from_templates(monkeypatch):
+    monkeypatch.setattr(
+        "hermes_cli.codex_models._fetch_models_from_api",
+        lambda access_token: ["gpt-5.2-codex"],
+    )
+
+    models = get_codex_model_ids(access_token="codex-access-token")
+
+    assert models == ["gpt-5.2-codex", "gpt-5.3-codex", "gpt-5.4", "gpt-5.3-codex-spark"]
 
 
 def test_model_command_uses_runtime_access_token_for_codex_list(monkeypatch):