diff --git a/litellm/proxy/client/cli/commands/agents.py b/litellm/proxy/client/cli/commands/agents.py
index 847e30db9a2..12d97ef6cce 100644
--- a/litellm/proxy/client/cli/commands/agents.py
+++ b/litellm/proxy/client/cli/commands/agents.py
@@ -828,7 +828,7 @@ def _codex_debug_models(
             encoding="utf-8",
             timeout=_CODEX_PREFLIGHT_TIMEOUT_SECONDS,
         )
-    except (OSError, subprocess.TimeoutExpired) as e:
+    except (OSError, subprocess.TimeoutExpired, UnicodeError) as e:
         return ModelSyncSkipped(f"`{name} debug models` failed: {e}")
     if completed.returncode == 0:
         return completed.stdout
diff --git a/litellm/router_utils/reasoning_effort_capability.py b/litellm/router_utils/reasoning_effort_capability.py
index d2fe9134a22..3563fcd96ae 100644
--- a/litellm/router_utils/reasoning_effort_capability.py
+++ b/litellm/router_utils/reasoning_effort_capability.py
@@ -34,7 +34,7 @@ from litellm._logging import verbose_logger
 from litellm.litellm_core_utils.core_helpers import as_str_mapping
 from litellm.litellm_core_utils.get_supported_openai_params import get_supported_openai_params
 from litellm.litellm_core_utils.reasoning_effort_strength import (
-    REASONING_EFFORT_STRENGTH_RANK,
+    REASONING_EFFORT_STRENGTH_ORDER,
     ReasoningEffortRounding,
     nearest_declared_reasoning_effort,
 )
@@ -136,7 +136,7 @@ def deployment_reasoning_effort_levels(deployment_model_info: object) -> tuple[s
 
 def deployment_rounds_reasoning_effort(deployment_model_info: object) -> bool:
     declared: Final = deployment_reasoning_effort_levels(deployment_model_info)
-    return declared is not None and any(level in REASONING_EFFORT_STRENGTH_RANK for level in declared)
+    return declared is not None and any(level in REASONING_EFFORT_STRENGTH_ORDER for level in declared)
 
 
 def with_adaptive_thinking_as_effort(
diff --git a/tests/unit/proxy/client/cli/test_agents.py b/tests/unit/proxy/client/cli/test_agents.py
index db7917ff131..60a19b11d72 100644
--- a/tests/unit/proxy/client/cli/test_agents.py
+++ b/tests/unit/proxy/client/cli/test_agents.py
@@ -1271,7 +1271,13 @@ class TestCodexModelSync:
         assert result.reason == "`codex debug models` exited 1: no output"
 
     @pytest.mark.parametrize(
-        "error", [OSError("codex vanished"), subprocess.TimeoutExpired("codex", 10)], ids=["oserror", "timeout"]
+        "error",
+        [
+            OSError("codex vanished"),
+            subprocess.TimeoutExpired("codex", 10),
+            UnicodeDecodeError("utf-8", b"\xff", 0, 1, "invalid start byte"),
+        ],
+        ids=["oserror", "timeout", "undecodable"],
     )
     def test_unrunnable_preflight_is_reported_not_raised(self, tmp_path, error):
         def failing_run(*a, **k):