diff --git a/test/Api.IntegrationTest/AdminConsole/Controllers/OrganizationUsersControllerTests.cs b/test/Api.IntegrationTest/AdminConsole/Controllers/OrganizationUsersControllerTests.cs
new file mode 100644
index 0000000000..dcb270b7bc
--- /dev/null
+++ b/test/Api.IntegrationTest/AdminConsole/Controllers/OrganizationUsersControllerTests.cs
@@ -0,0 +1,84 @@
+using System.Net;
+using System.Net.Http.Headers;
+using Bit.Api.IntegrationTest.Factories;
+using Bit.Seeder.Recipes;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace Bit.Api.IntegrationTest.AdminConsole.Controllers;
+
+public class OrganizationUsersControllerTest : IClassFixture<ApiApplicationFactory>, IAsyncLifetime
+{
+    private readonly HttpClient _client;
+    private readonly ApiApplicationFactory _factory;
+    private readonly ITestOutputHelper _testOutputHelper;
+
+    public OrganizationUsersControllerTest(ApiApplicationFactory factory, ITestOutputHelper testOutputHelper)
+    {
+        _factory = factory;
+        _testOutputHelper = testOutputHelper;
+        _client = _factory.CreateClient();
+    }
+
+    public Task InitializeAsync()
+    {
+        return Task.CompletedTask;
+    }
+
+    public Task DisposeAsync()
+    {
+        _client.Dispose();
+        return Task.CompletedTask;
+    }
+
+    [Fact]
+    public async Task Get_SmallOrg()
+    {
+        var db = _factory.GetDatabaseContext();
+        var seeder = new OrganizationWithUsersRecipe(db);
+
+        var orgId = seeder.Seed("Org", 100, "large.test");
+
+        var tokens = await _factory.LoginAsync("admin@large.test", "c55hlJ/cfdvTd4awTXUqow6X3cOQCfGwn11o3HblnPs=");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", tokens.Token);
+
+        var stopwatch = System.Diagnostics.Stopwatch.StartNew();
+
+        var response = await _client.GetAsync($"/organizations/{orgId}/users?includeCollections=true");
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+        var result = await response.Content.ReadAsStringAsync();
+        Assert.NotEmpty(result);
+
+        stopwatch.Stop();
+        _testOutputHelper.WriteLine($"Request duration: {stopwatch.ElapsedMilliseconds} ms");
+    }
+
+    [Fact]
+    public async Task Get_LargeOrg()
+    {
+        var db = _factory.GetDatabaseContext();
+        var seeder = new OrganizationWithUsersRecipe(db);
+
+        var orgId = seeder.Seed("Org", 60000, "large.test");
+
+        var tokens = await _factory.LoginAsync("admin@large.test", "c55hlJ/cfdvTd4awTXUqow6X3cOQCfGwn11o3HblnPs=");
+        _client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", tokens.Token);
+
+        var stopwatch = System.Diagnostics.Stopwatch.StartNew();
+
+        var response = await _client.GetAsync($"/organizations/{orgId}/users?includeCollections=true");
+        Assert.Equal(HttpStatusCode.OK, response.StatusCode);
+
+        var result = await response.Content.ReadAsStringAsync();
+        Assert.NotEmpty(result);
+
+        stopwatch.Stop();
+        _testOutputHelper.WriteLine($"Request duration: {stopwatch.ElapsedMilliseconds} ms");
+
+        // var result = await response.Content.ReadFromJsonAsync<ListResponseModel<OrganizationUserUserDetailsResponseModel>>();
+        // Assert.NotNull(result?.Data);
+        // Assert.Equal(600001, result.Data.Count());
+    }
+
+}
diff --git a/test/Api.IntegrationTest/Api.IntegrationTest.csproj b/test/Api.IntegrationTest/Api.IntegrationTest.csproj
index 8fa74f98d4..a9d7fd502e 100644
--- a/test/Api.IntegrationTest/Api.IntegrationTest.csproj
+++ b/test/Api.IntegrationTest/Api.IntegrationTest.csproj
@@ -18,6 +18,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\Api\Api.csproj" />
+    <ProjectReference Include="..\..\util\Seeder\Seeder.csproj" />
     <ProjectReference Include="..\IntegrationTestCommon\IntegrationTestCommon.csproj" />
 
     <Content Include="..\..\src\Api\appsettings.*.json">
diff --git a/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs b/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
index 0b9dd44a26..fb06c091ae 100644
--- a/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
+++ b/util/Seeder/Recipes/OrganizationWithUsersRecipe.cs
@@ -7,7 +7,7 @@ namespace Bit.Seeder.Recipes;
 
 public class OrganizationWithUsersRecipe(DatabaseContext db)
 {
-    public void Seed(string name, int users, string domain)
+    public Guid Seed(string name, int users, string domain)
     {
         var organization = OrganizationSeeder.CreateEnterprise(name, domain, users);
         var user = UserSeeder.CreateUser($"admin@{domain}");
@@ -31,5 +31,7 @@ public class OrganizationWithUsersRecipe(DatabaseContext db)
         // Use LinqToDB's BulkCopy for significant better performance
         db.BulkCopy(additionalUsers);
         db.BulkCopy(additionalOrgUsers);
+
+        return organization.Id;
     }
 }