diff --git a/litellm/model_prices_and_context_window_backup.json b/litellm/model_prices_and_context_window_backup.json
index 04a67200ced..385cf22d06c 100644
--- a/litellm/model_prices_and_context_window_backup.json
+++ b/litellm/model_prices_and_context_window_backup.json
@@ -29330,9 +29330,10 @@
         ],
         "supports_computer_use": true,
         "supports_function_calling": true,
+        "supports_max_reasoning_effort": true,
         "supports_minimal_reasoning_effort": false,
         "supports_native_streaming": true,
-        "supports_none_reasoning_effort": true,
+        "supports_none_reasoning_effort": false,
         "supports_parallel_function_calling": true,
         "supports_pdf_input": true,
         "supports_prompt_cache_breakpoint": true,
diff --git a/model_prices_and_context_window.json b/model_prices_and_context_window.json
index 04a67200ced..385cf22d06c 100644
--- a/model_prices_and_context_window.json
+++ b/model_prices_and_context_window.json
@@ -29330,9 +29330,10 @@
         ],
         "supports_computer_use": true,
         "supports_function_calling": true,
+        "supports_max_reasoning_effort": true,
         "supports_minimal_reasoning_effort": false,
         "supports_native_streaming": true,
-        "supports_none_reasoning_effort": true,
+        "supports_none_reasoning_effort": false,
         "supports_parallel_function_calling": true,
         "supports_pdf_input": true,
         "supports_prompt_cache_breakpoint": true,
diff --git a/tests/test_litellm/router_utils/test_reasoning_effort_capability.py b/tests/test_litellm/router_utils/test_reasoning_effort_capability.py
index a0dbf3b6637..7b2e45ab3ed 100644
--- a/tests/test_litellm/router_utils/test_reasoning_effort_capability.py
+++ b/tests/test_litellm/router_utils/test_reasoning_effort_capability.py
@@ -371,3 +371,20 @@ class TestKimiK3AdvertisesItsDocumentedLevels:
             "low",
             "high",
         )
+
+
+class TestGpt6AstraAdvertisesItsDocumentedLevels:
+    def test_the_entry_advertises_low_through_max_without_none(self, local_model_cost_map):
+        """OpenAI documents low, medium, high, xhigh and max for gpt-6-astra. Unlike gpt-5.6-sol it
+        does not take none, so a group must not offer none and must offer max."""
+        from litellm.utils import _get_model_info_helper
+
+        model_info = dict(_get_model_info_helper(model="gpt-6-astra", custom_llm_provider="openai"))
+
+        assert resolve_supported_reasoning_efforts(model_info, deployment_is_mapped=True) == (
+            "low",
+            "medium",
+            "high",
+            "xhigh",
+            "max",
+        )