diff --git a/litellm/llms/azure/responses/transformation.py b/litellm/llms/azure/responses/transformation.py
index 75f47b9229c..537b3489270 100644
--- a/litellm/llms/azure/responses/transformation.py
+++ b/litellm/llms/azure/responses/transformation.py
@@ -38,6 +38,15 @@ class AzureOpenAIResponsesAPIConfig(OpenAIResponsesAPIConfig):
     def _effort_resolves_to_none(model: str, effort: str | None) -> bool:
         return AzureOpenAIGPT5Config.effort_resolves_to_none(model, effort)
 
+    @staticmethod
+    def _is_unsupported_reasoning_effort(model: str, effort: str | None) -> bool:
+        """Read the effort capability from the Azure map entry, like the sibling checks above.
+
+        The inherited OpenAI lookup would resolve a bare Azure deployment name (e.g. ``gpt-5.4``)
+        against the OpenAI entry, which can explicitly disable an effort Azure supports.
+        """
+        return AzureOpenAIGPT5Config.is_reasoning_effort_unsupported(model, effort)
+
     def get_supported_openai_params(self, model: str) -> list:
         """
         Azure Responses API does not support context_management (compaction).
diff --git a/litellm/llms/openai/chat/gpt_5_transformation.py b/litellm/llms/openai/chat/gpt_5_transformation.py
index 94c5c5d016d..79891eab1ad 100644
--- a/litellm/llms/openai/chat/gpt_5_transformation.py
+++ b/litellm/llms/openai/chat/gpt_5_transformation.py
@@ -173,6 +173,14 @@ class OpenAIGPT5Config(OpenAIGPTConfig):
     ) -> bool:
         return cls._supports_reasoning_effort_level(model, level)
 
+    @classmethod
+    def is_reasoning_effort_unsupported(cls, model: str, level: str | None) -> bool:
+        if level == "xhigh":
+            return not cls._supports_reasoning_effort_level(model, level)
+        if level in ("minimal", "low"):
+            return cls._is_reasoning_effort_level_explicitly_disabled(model, level)
+        return False
+
     @classmethod
     def effort_resolves_to_none(cls, model: str, effective_effort: str | None) -> bool:
         """Whether this request's reasoning effort ends up as "none", which is the single
diff --git a/litellm/llms/openai/responses/transformation.py b/litellm/llms/openai/responses/transformation.py
index ec4f0c04475..eab9d9e24cf 100644
--- a/litellm/llms/openai/responses/transformation.py
+++ b/litellm/llms/openai/responses/transformation.py
@@ -155,6 +155,13 @@ class OpenAIResponsesAPIConfig(BaseResponsesAPIConfig):
 
         return OpenAIGPT5Config.effort_resolves_to_none(model, effort)
 
+    @staticmethod
+    def _is_unsupported_reasoning_effort(model: str, effort: str | None) -> bool:
+        """Apply the GPT-5 reasoning-effort capability flags used by chat completions."""
+        from litellm.llms.openai.chat.gpt_5_transformation import OpenAIGPT5Config
+
+        return OpenAIGPT5Config.is_reasoning_effort_unsupported(model, effort)
+
     @staticmethod
     def _supports_reasoning_param(model: str) -> bool:
         from litellm.utils import get_model_info_helper
@@ -219,7 +226,8 @@ class OpenAIResponsesAPIConfig(BaseResponsesAPIConfig):
 
         GPT-5 models have restrictions on temperature and top_p (only temperature=1
         is accepted, and top_p is rejected, unless reasoning.effort resolves to
-        'none' on models that support it).
+        'none' on models that support it). Reasoning effort values the model map
+        disables are rejected or dropped first, mirroring chat completions.
         Apply the same validation used by the chat completions path.
         """
         params: Final = dict(response_api_optional_params)
@@ -248,8 +256,29 @@ class OpenAIResponsesAPIConfig(BaseResponsesAPIConfig):
         if self._is_gpt_5_model(model=lookup_name):
             reasoning: Final = params.get("reasoning") or {}
             effort: Final = reasoning.get("effort") if isinstance(reasoning, dict) else None
+            unsupported_effort: Final = isinstance(effort, str) and self._is_unsupported_reasoning_effort(
+                lookup_name, effort
+            )
+            should_drop_effort: Final = unsupported_effort and (drop_params or litellm.drop_params)
+
+            if unsupported_effort:
+                if should_drop_effort:
+                    if isinstance(reasoning, dict):
+                        updated_reasoning: Final = reasoning.copy()
+                        updated_reasoning.pop("effort", None)
+                        if updated_reasoning:
+                            params["reasoning"] = updated_reasoning
+                        else:
+                            params.pop("reasoning", None)
+                else:
+                    raise litellm.UnsupportedParamsError(
+                        message=f"reasoning.effort={effort} is not supported for this model.",
+                        status_code=400,
+                    )
+
+            effective_effort: Final = None if should_drop_effort else effort
             supports_none: Final = self._supports_reasoning_effort_none(model=lookup_name)
-            effort_is_none: Final = supports_none and self._effort_resolves_to_none(lookup_name, effort)
+            effort_is_none: Final = supports_none and self._effort_resolves_to_none(lookup_name, effective_effort)
 
             temperature: Final = params.get("temperature")
             if temperature is not None and temperature != 1:
diff --git a/litellm/proxy/auth/auth_object_prefetch.py b/litellm/proxy/auth/auth_object_prefetch.py
index fd5b99951f4..fd0873cb51e 100644
--- a/litellm/proxy/auth/auth_object_prefetch.py
+++ b/litellm/proxy/auth/auth_object_prefetch.py
@@ -16,7 +16,7 @@ from litellm._internal_context import service_target
 from litellm._logging import verbose_proxy_logger
 from litellm.caching.redis_batch import active_request_redis_batch
 from litellm.caching.redis_cache import RedisCache
-from litellm.constants import DEFAULT_IN_MEMORY_TTL, REGISTRY_ERROR_NEGATIVE_CACHE_TTL
+from litellm.constants import REGISTRY_ERROR_NEGATIVE_CACHE_TTL
 from litellm.models.organization import LiteLLM_OrganizationTable
 from litellm.models.team import LiteLLM_TeamTableCachedObj
 from litellm.models.team_membership import LiteLLM_TeamMembership
@@ -194,14 +194,17 @@ def _iter_entries(refs: AuthObjectRefs, management_ttl: float) -> Iterator[_Cach
             None,
         )
     if refs.organization_id is not None:
+        # Organization entries use the management TTL like every other prefetched object: a
+        # 5s fuse expires before slow requests reach the getters, sending them back to
+        # the DB the prefetch was meant to spare.
         yield _CacheEntry(
-            f"org_id:{refs.organization_id}", "organization_row", LiteLLM_OrganizationTable, DEFAULT_IN_MEMORY_TTL
+            f"org_id:{refs.organization_id}", "organization_row", LiteLLM_OrganizationTable, management_ttl
         )
         yield _CacheEntry(
             f"org_id:{refs.organization_id}:with_budget",
             "organization_row",
             LiteLLM_OrganizationTable,
-            DEFAULT_IN_MEMORY_TTL,
+            management_ttl,
         )
     if refs.project_id is not None:
         yield _CacheEntry(f"project_id:{refs.project_id}", "project_row", LiteLLM_ProjectTableCachedObj, management_ttl)
diff --git a/tests/unit/llms/openai/responses/test_reasoning_effort_capability.py b/tests/unit/llms/openai/responses/test_reasoning_effort_capability.py
new file mode 100644
index 00000000000..585a0ea3b5f
--- /dev/null
+++ b/tests/unit/llms/openai/responses/test_reasoning_effort_capability.py
@@ -0,0 +1,86 @@
+import re
+
+import pytest
+
+import litellm
+from litellm.llms.azure.responses.transformation import AzureOpenAIResponsesAPIConfig
+from litellm.llms.openai.responses.transformation import OpenAIResponsesAPIConfig
+
+
+@pytest.mark.parametrize("effort", ["minimal", "low"])
+def test_rejects_explicitly_unsupported_lower_reasoning_effort(effort: str) -> None:
+    config = OpenAIResponsesAPIConfig()
+
+    with pytest.raises(litellm.UnsupportedParamsError, match=f"reasoning.effort={effort}"):
+        config.map_openai_params(
+            response_api_optional_params={"reasoning": {"effort": effort}},
+            model="gpt-5.5-pro",
+            drop_params=False,
+        )
+
+
+def test_keeps_supported_reasoning_effort() -> None:
+    config = OpenAIResponsesAPIConfig()
+
+    result = config.map_openai_params(
+        response_api_optional_params={"reasoning": {"effort": "medium"}},
+        model="gpt-5.5-pro",
+        drop_params=False,
+    )
+
+    assert result["reasoning"] == {"effort": "medium"}
+
+
+def test_drop_params_removes_only_unsupported_effort() -> None:
+    config = OpenAIResponsesAPIConfig()
+
+    result = config.map_openai_params(
+        response_api_optional_params={"reasoning": {"effort": "minimal", "summary": "detailed"}},
+        model="gpt-5.5-pro",
+        drop_params=True,
+    )
+
+    assert result["reasoning"] == {"summary": "detailed"}
+
+
+def test_drop_params_revalidates_temperature_after_effort_drop() -> None:
+    """Dropping an unsupported effort revalidates temperature against the emptied effort.
+
+    `gpt-5.1` really declares `xhigh` unsupported while supporting (and defaulting to)
+    `none`, so no capability stubbing is needed: the dropped effort resolves to `none`
+    and a valid non-default temperature survives.
+    """
+    config = OpenAIResponsesAPIConfig()
+
+    result = config.map_openai_params(
+        response_api_optional_params={"reasoning": {"effort": "xhigh"}, "temperature": 0.5},
+        model="gpt-5.1",
+        drop_params=True,
+    )
+
+    assert "reasoning" not in result
+    assert result["temperature"] == 0.5
+
+
+def test_azure_config_uses_azure_capability_map_for_effort() -> None:
+    """A bare Azure deployment name must resolve against the Azure map entry.
+
+    OpenAI's `gpt-5.4` entry explicitly disables `minimal` while Azure's enables it;
+    the OpenAI lookup would wrongly reject an effort Azure supports.
+    """
+    openai_config = OpenAIResponsesAPIConfig()
+    with pytest.raises(litellm.UnsupportedParamsError, match=re.escape("reasoning.effort=minimal")):
+        openai_config.map_openai_params(
+            response_api_optional_params={"reasoning": {"effort": "minimal"}},
+            model="gpt-5.4",
+            drop_params=False,
+        )
+
+    azure_config = AzureOpenAIResponsesAPIConfig()
+    result = azure_config.map_openai_params(
+        response_api_optional_params={"reasoning": {"effort": "minimal"}},
+        model="gpt-5.4",
+        drop_params=False,
+    )
+
+    assert result["reasoning"] == {"effort": "minimal"}
diff --git a/tests/unit/proxy/auth/test_auth_object_prefetch.py b/tests/unit/proxy/auth/test_auth_object_prefetch.py
index ffac95d6815..ff5f42587aa 100644
--- a/tests/unit/proxy/auth/test_auth_object_prefetch.py
+++ b/tests/unit/proxy/auth/test_auth_object_prefetch.py
@@ -186,8 +186,8 @@ async def test_cold_regime_is_one_mget_one_query_and_the_getters_never_touch_io_
     assert sets == sorted(
         [
             f"SET {TEAM_ID}_{USER_ID} ttl=5",
-            f"SET org_id:{ORG_ID} ttl=5",
-            f"SET org_id:{ORG_ID}:with_budget ttl=5",
+            f"SET org_id:{ORG_ID} ttl=60",
+            f"SET org_id:{ORG_ID}:with_budget ttl=60",
             f"SET {USER_ID} ttl=60",
             f"SET team_id:{TEAM_ID} ttl=60",
             f"SET team_membership:{USER_ID}:{TEAM_ID} ttl=None",