diff --git a/litellm/proxy/management_endpoints/key_management_endpoints.py b/litellm/proxy/management_endpoints/key_management_endpoints.py
index 14d221d19e..cc2ac90814 100644
--- a/litellm/proxy/management_endpoints/key_management_endpoints.py
+++ b/litellm/proxy/management_endpoints/key_management_endpoints.py
@@ -507,7 +507,11 @@ async def _common_key_generation_helper(  # noqa: PLR0915
                         upperbound_duration = duration_in_seconds(
                             duration=upperbound_value
                         )
-                        user_duration = duration_in_seconds(duration=value)
+                        # Handle special case where duration is "-1" (never expires)
+                        if value == "-1":
+                            user_duration = float('inf')  # Infinite duration
+                        else:
+                            user_duration = duration_in_seconds(duration=value)
                         if user_duration > upperbound_duration:
                             raise HTTPException(
                                 status_code=400,
@@ -1339,7 +1343,10 @@ async def prepare_key_update_data(
 
     if "duration" in non_default_values:
         duration = non_default_values.pop("duration")
-        if duration and (isinstance(duration, str)) and len(duration) > 0:
+        if duration == "-1":
+            # Set expires to None to indicate the key never expires
+            non_default_values["expires"] = None
+        elif duration and (isinstance(duration, str)) and len(duration) > 0:
             duration_s = duration_in_seconds(duration=duration)
             expires = datetime.now(timezone.utc) + timedelta(seconds=duration_s)
             non_default_values["expires"] = expires
@@ -1452,7 +1459,7 @@ async def update_key_fn(
     - tpm_limit_type: Optional[str] - TPM rate limit type - "best_effort_throughput", "guaranteed_throughput", or "dynamic"
     - rpm_limit_type: Optional[str] - RPM rate limit type - "best_effort_throughput", "guaranteed_throughput", or "dynamic"
     - allowed_cache_controls: Optional[list] - List of allowed cache control values
-    - duration: Optional[str] - Key validity duration ("30d", "1h", etc.)
+    - duration: Optional[str] - Key validity duration ("30d", "1h", etc.) or "-1" to never expire
     - permissions: Optional[dict] - Key-specific permissions
     - send_invite_email: Optional[bool] - Send invite email to user_id
     - guardrails: Optional[List[str]] - List of active guardrails for the key
diff --git a/tests/proxy_unit_tests/test_proxy_utils.py b/tests/proxy_unit_tests/test_proxy_utils.py
index 2e5cfff8bf..5c3c394892 100644
--- a/tests/proxy_unit_tests/test_proxy_utils.py
+++ b/tests/proxy_unit_tests/test_proxy_utils.py
@@ -678,6 +678,11 @@ async def test_prepare_key_update_data():
     updated_data = await prepare_key_update_data(data, existing_key_row)
     assert updated_data["metadata"] is None
 
+    # Test duration "-1" sets expires to None (never expires)
+    data = UpdateKeyRequest(key="test_key", duration="-1")
+    updated_data = await prepare_key_update_data(data, existing_key_row)
+    assert updated_data["expires"] is None
+
 
 @pytest.mark.parametrize(
     "env_vars, expected_url",
diff --git a/tests/test_litellm/proxy/management_endpoints/test_key_management_endpoints.py b/tests/test_litellm/proxy/management_endpoints/test_key_management_endpoints.py
index ff85e6d9e7..648045a7ea 100644
--- a/tests/test_litellm/proxy/management_endpoints/test_key_management_endpoints.py
+++ b/tests/test_litellm/proxy/management_endpoints/test_key_management_endpoints.py
@@ -815,6 +815,37 @@ async def test_update_service_account_works_with_team_id():
     await prepare_key_update_data(data=data, existing_key_row=existing_key)
 
 
+@pytest.mark.asyncio
+async def test_prepare_key_update_data_duration_never_expires():
+    """Test that duration="-1" sets expires to None (never expires)."""
+    from litellm.proxy._types import UpdateKeyRequest
+    from litellm.proxy.management_endpoints.key_management_endpoints import (
+        prepare_key_update_data,
+    )
+
+    # Mock existing key
+    existing_key = LiteLLM_VerificationToken(
+        token="test-token",
+        key_alias="test-key",
+        models=["gpt-3.5-turbo"],
+        user_id="test-user",
+        team_id=None,
+        auto_rotate=False,
+        rotation_interval=None,
+        metadata={},
+    )
+
+    # Test setting duration to "-1" (never expires)
+    update_request = UpdateKeyRequest(key="test-token", duration="-1")
+
+    result = await prepare_key_update_data(
+        data=update_request, existing_key_row=existing_key
+    )
+
+    # Verify that expires is set to None
+    assert result["expires"] is None
+
+
 @pytest.mark.asyncio
 async def test_validate_team_id_used_in_service_account_request_requires_team_id():
     """
diff --git a/ui/litellm-dashboard/src/components/common_components/KeyLifecycleSettings.tsx b/ui/litellm-dashboard/src/components/common_components/KeyLifecycleSettings.tsx
index 8129f4314f..81d22b5634 100644
--- a/ui/litellm-dashboard/src/components/common_components/KeyLifecycleSettings.tsx
+++ b/ui/litellm-dashboard/src/components/common_components/KeyLifecycleSettings.tsx
@@ -64,13 +64,13 @@ const KeyLifecycleSettings: React.FC<KeyLifecycleSettingsProps> = ({
         <div className="space-y-2">
           <label className="text-sm font-medium text-gray-700 flex items-center space-x-1">
             <span>Expire Key</span>
-            <Tooltip title="Set when this key should expire. Format: 30s (seconds), 30m (minutes), 30h (hours), 30d (days)">
+            <Tooltip title="Set when this key should expire. Format: 30s (seconds), 30m (minutes), 30h (hours), 30d (days). Use -1 to never expire.">
               <InfoCircleOutlined className="text-gray-400 cursor-help text-xs" />
             </Tooltip>
           </label>
           <TextInput
             name="duration"
-            placeholder="e.g., 30d"
+            placeholder="e.g., 30d or -1 to never expire"
             className="w-full"
             value={durationValue}
             onValueChange={handleDurationChange}