diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
index 738f724dcd2..fe6ef70187c 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatOptions.cs
@@ -197,7 +197,7 @@ protected ChatOptions(ChatOptions? other)
     /// </remarks>
     [Experimental("MEAI001")]
     [JsonIgnore]
-    public object? ContinuationToken { get; set; }
+    public ResponseContinuationToken? ContinuationToken { get; set; }
 
     /// <summary>
     /// Gets or sets a callback responsible for creating the raw representation of the chat options from an underlying implementation.
diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponse.cs b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponse.cs
index 6f7ca4eeda2..1b535b3a244 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponse.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponse.cs
@@ -102,7 +102,7 @@ public IList<ChatMessage> Messages
     /// </remarks>
     [Experimental("MEAI001")]
     [JsonIgnore]
-    public object? ContinuationToken { get; set; }
+    public ResponseContinuationToken? ContinuationToken { get; set; }
 
     /// <summary>Gets or sets the raw representation of the chat response from an underlying implementation.</summary>
     /// <remarks>
diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponseUpdate.cs b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponseUpdate.cs
index f1ad70cd22f..22f0dde1530 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponseUpdate.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/ChatCompletion/ChatResponseUpdate.cs
@@ -172,7 +172,7 @@ public IList<AIContent> Contents
     /// </remarks>
     [Experimental("MEAI001")]
     [JsonIgnore]
-    public object? ContinuationToken { get; set; }
+    public ResponseContinuationToken? ContinuationToken { get; set; }
 
     /// <summary>Gets a <see cref="AIContent"/> object to display in the debugger display.</summary>
     [DebuggerBrowsable(DebuggerBrowsableState.Never)]
diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/CompatibilitySuppressions.xml b/src/Libraries/Microsoft.Extensions.AI.Abstractions/CompatibilitySuppressions.xml
index 8488d3969c4..993fd3d3ff0 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/CompatibilitySuppressions.xml
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/CompatibilitySuppressions.xml
@@ -1,6 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- https://learn.microsoft.com/dotnet/fundamentals/package-validation/diagnostic-ids -->
 <Suppressions xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatOptions.get_ContinuationToken</Target>
+    <Left>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponse.get_ContinuationToken</Target>
+    <Left>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponseUpdate.get_ContinuationToken</Target>
+    <Left>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0002</DiagnosticId>
     <Target>M:Microsoft.Extensions.AI.HostedMcpServerTool.get_Headers</Target>
@@ -22,6 +43,27 @@
     <Right>lib/net462/Microsoft.Extensions.AI.Abstractions.dll</Right>
     <IsBaselineSuppression>true</IsBaselineSuppression>
   </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatOptions.get_ContinuationToken</Target>
+    <Left>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponse.get_ContinuationToken</Target>
+    <Left>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponseUpdate.get_ContinuationToken</Target>
+    <Left>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0002</DiagnosticId>
     <Target>M:Microsoft.Extensions.AI.HostedMcpServerTool.get_Headers</Target>
@@ -43,6 +85,27 @@
     <Right>lib/net8.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
     <IsBaselineSuppression>true</IsBaselineSuppression>
   </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatOptions.get_ContinuationToken</Target>
+    <Left>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponse.get_ContinuationToken</Target>
+    <Left>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponseUpdate.get_ContinuationToken</Target>
+    <Left>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0002</DiagnosticId>
     <Target>M:Microsoft.Extensions.AI.HostedMcpServerTool.get_Headers</Target>
@@ -64,6 +127,27 @@
     <Right>lib/net9.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
     <IsBaselineSuppression>true</IsBaselineSuppression>
   </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatOptions.get_ContinuationToken</Target>
+    <Left>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponse.get_ContinuationToken</Target>
+    <Left>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0002</DiagnosticId>
+    <Target>M:Microsoft.Extensions.AI.ChatResponseUpdate.get_ContinuationToken</Target>
+    <Left>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Left>
+    <Right>lib/netstandard2.0/Microsoft.Extensions.AI.Abstractions.dll</Right>
+    <IsBaselineSuppression>true</IsBaselineSuppression>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0002</DiagnosticId>
     <Target>M:Microsoft.Extensions.AI.HostedMcpServerTool.get_Headers</Target>
diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/Microsoft.Extensions.AI.Abstractions.json b/src/Libraries/Microsoft.Extensions.AI.Abstractions/Microsoft.Extensions.AI.Abstractions.json
index b5ef3774b45..26512c88a28 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/Microsoft.Extensions.AI.Abstractions.json
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/Microsoft.Extensions.AI.Abstractions.json
@@ -1503,7 +1503,7 @@
         },
         {
           "Member": "override string Microsoft.Extensions.AI.DelegatingAIFunction.ToString();",
-          "Stage": "Experimental"
+          "Stage": "Stable"
         }
       ],
       "Properties": [
@@ -1609,42 +1609,6 @@
         }
       ]
     },
-    {
-      "Type": "class Microsoft.Extensions.AI.DelegatingSpeechToTextClient : Microsoft.Extensions.AI.ISpeechToTextClient, System.IDisposable",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.DelegatingSpeechToTextClient.DelegatingSpeechToTextClient(Microsoft.Extensions.AI.ISpeechToTextClient innerClient);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "void Microsoft.Extensions.AI.DelegatingSpeechToTextClient.Dispose();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "virtual void Microsoft.Extensions.AI.DelegatingSpeechToTextClient.Dispose(bool disposing);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "virtual object? Microsoft.Extensions.AI.DelegatingSpeechToTextClient.GetService(System.Type serviceType, object? serviceKey = null);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "virtual System.Collections.Generic.IAsyncEnumerable<Microsoft.Extensions.AI.SpeechToTextResponseUpdate> Microsoft.Extensions.AI.DelegatingSpeechToTextClient.GetStreamingTextAsync(System.IO.Stream audioSpeechStream, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "virtual System.Threading.Tasks.Task<Microsoft.Extensions.AI.SpeechToTextResponse> Microsoft.Extensions.AI.DelegatingSpeechToTextClient.GetTextAsync(System.IO.Stream audioSpeechStream, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "Microsoft.Extensions.AI.ISpeechToTextClient Microsoft.Extensions.AI.DelegatingSpeechToTextClient.InnerClient { get; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
     {
       "Type": "class Microsoft.Extensions.AI.Embedding",
       "Stage": "Stable",
@@ -2085,24 +2049,6 @@
         }
       ]
     },
-    {
-      "Type": "interface Microsoft.Extensions.AI.ISpeechToTextClient : System.IDisposable",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "object? Microsoft.Extensions.AI.ISpeechToTextClient.GetService(System.Type serviceType, object? serviceKey = null);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Collections.Generic.IAsyncEnumerable<Microsoft.Extensions.AI.SpeechToTextResponseUpdate> Microsoft.Extensions.AI.ISpeechToTextClient.GetStreamingTextAsync(System.IO.Stream audioSpeechStream, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Threading.Tasks.Task<Microsoft.Extensions.AI.SpeechToTextResponse> Microsoft.Extensions.AI.ISpeechToTextClient.GetTextAsync(System.IO.Stream audioSpeechStream, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        }
-      ]
-    },
     {
       "Type": "sealed class Microsoft.Extensions.AI.NoneChatToolMode : Microsoft.Extensions.AI.ChatToolMode",
       "Stage": "Stable",
@@ -2145,304 +2091,6 @@
         }
       ]
     },
-    {
-      "Type": "static class Microsoft.Extensions.AI.SpeechToTextClientExtensions",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "static TService? Microsoft.Extensions.AI.SpeechToTextClientExtensions.GetService<TService>(this Microsoft.Extensions.AI.ISpeechToTextClient client, object? serviceKey = null);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static System.Collections.Generic.IAsyncEnumerable<Microsoft.Extensions.AI.SpeechToTextResponseUpdate> Microsoft.Extensions.AI.SpeechToTextClientExtensions.GetStreamingTextAsync(this Microsoft.Extensions.AI.ISpeechToTextClient client, Microsoft.Extensions.AI.DataContent audioSpeechContent, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static System.Threading.Tasks.Task<Microsoft.Extensions.AI.SpeechToTextResponse> Microsoft.Extensions.AI.SpeechToTextClientExtensions.GetTextAsync(this Microsoft.Extensions.AI.ISpeechToTextClient client, Microsoft.Extensions.AI.DataContent audioSpeechContent, Microsoft.Extensions.AI.SpeechToTextOptions? options = null, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "class Microsoft.Extensions.AI.SpeechToTextClientMetadata",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextClientMetadata.SpeechToTextClientMetadata(string? providerName = null, System.Uri? providerUri = null, string? defaultModelId = null);",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextClientMetadata.DefaultModelId { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextClientMetadata.ProviderName { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Uri? Microsoft.Extensions.AI.SpeechToTextClientMetadata.ProviderUri { get; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "class Microsoft.Extensions.AI.SpeechToTextOptions",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextOptions.SpeechToTextOptions();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "virtual Microsoft.Extensions.AI.SpeechToTextOptions Microsoft.Extensions.AI.SpeechToTextOptions.Clone();",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "Microsoft.Extensions.AI.AdditionalPropertiesDictionary? Microsoft.Extensions.AI.SpeechToTextOptions.AdditionalProperties { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextOptions.ModelId { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Func<Microsoft.Extensions.AI.ISpeechToTextClient, object?>? Microsoft.Extensions.AI.SpeechToTextOptions.RawRepresentationFactory { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextOptions.SpeechLanguage { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "int? Microsoft.Extensions.AI.SpeechToTextOptions.SpeechSampleRate { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextOptions.TextLanguage { get; set; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "class Microsoft.Extensions.AI.SpeechToTextResponse",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponse.SpeechToTextResponse();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponse.SpeechToTextResponse(System.Collections.Generic.IList<Microsoft.Extensions.AI.AIContent> contents);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponse.SpeechToTextResponse(string? content);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdate[] Microsoft.Extensions.AI.SpeechToTextResponse.ToSpeechToTextResponseUpdates();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override string Microsoft.Extensions.AI.SpeechToTextResponse.ToString();",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "Microsoft.Extensions.AI.AdditionalPropertiesDictionary? Microsoft.Extensions.AI.SpeechToTextResponse.AdditionalProperties { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Collections.Generic.IList<Microsoft.Extensions.AI.AIContent> Microsoft.Extensions.AI.SpeechToTextResponse.Contents { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.TimeSpan? Microsoft.Extensions.AI.SpeechToTextResponse.EndTime { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextResponse.ModelId { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "object? Microsoft.Extensions.AI.SpeechToTextResponse.RawRepresentation { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextResponse.ResponseId { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.TimeSpan? Microsoft.Extensions.AI.SpeechToTextResponse.StartTime { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string Microsoft.Extensions.AI.SpeechToTextResponse.Text { get; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "class Microsoft.Extensions.AI.SpeechToTextResponseUpdate",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdate.SpeechToTextResponseUpdate();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdate.SpeechToTextResponseUpdate(System.Collections.Generic.IList<Microsoft.Extensions.AI.AIContent> contents);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdate.SpeechToTextResponseUpdate(string? content);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override string Microsoft.Extensions.AI.SpeechToTextResponseUpdate.ToString();",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "Microsoft.Extensions.AI.AdditionalPropertiesDictionary? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.AdditionalProperties { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.Collections.Generic.IList<Microsoft.Extensions.AI.AIContent> Microsoft.Extensions.AI.SpeechToTextResponseUpdate.Contents { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.TimeSpan? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.EndTime { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdate.Kind { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.ModelId { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "object? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.RawRepresentation { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.ResponseId { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "System.TimeSpan? Microsoft.Extensions.AI.SpeechToTextResponseUpdate.StartTime { get; set; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string Microsoft.Extensions.AI.SpeechToTextResponseUpdate.Text { get; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "static class Microsoft.Extensions.AI.SpeechToTextResponseUpdateExtensions",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponse Microsoft.Extensions.AI.SpeechToTextResponseUpdateExtensions.ToSpeechToTextResponse(this System.Collections.Generic.IEnumerable<Microsoft.Extensions.AI.SpeechToTextResponseUpdate> updates);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static System.Threading.Tasks.Task<Microsoft.Extensions.AI.SpeechToTextResponse> Microsoft.Extensions.AI.SpeechToTextResponseUpdateExtensions.ToSpeechToTextResponseAsync(this System.Collections.Generic.IAsyncEnumerable<Microsoft.Extensions.AI.SpeechToTextResponseUpdate> updates, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken));",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "readonly struct Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind : System.IEquatable<Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind>",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.SpeechToTextResponseUpdateKind(string value);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.SpeechToTextResponseUpdateKind();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override bool Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Equals(object? obj);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "bool Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Equals(Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind other);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override int Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.GetHashCode();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static bool Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.operator ==(Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind left, Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind right);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static bool Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.operator !=(Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind left, Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind right);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override string Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.ToString();",
-          "Stage": "Experimental"
-        }
-      ],
-      "Properties": [
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Error { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.SessionClose { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.SessionOpen { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.TextUpdated { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "static Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.TextUpdating { get; }",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "string Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Value { get; }",
-          "Stage": "Experimental"
-        }
-      ]
-    },
-    {
-      "Type": "sealed class Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Converter",
-      "Stage": "Experimental",
-      "Methods": [
-        {
-          "Member": "Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Converter.Converter();",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Converter.Read(ref System.Text.Json.Utf8JsonReader reader, System.Type typeToConvert, System.Text.Json.JsonSerializerOptions options);",
-          "Stage": "Experimental"
-        },
-        {
-          "Member": "override void Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind.Converter.Write(System.Text.Json.Utf8JsonWriter writer, Microsoft.Extensions.AI.SpeechToTextResponseUpdateKind value, System.Text.Json.JsonSerializerOptions options);",
-          "Stage": "Experimental"
-        }
-      ]
-    },
     {
       "Type": "sealed class Microsoft.Extensions.AI.TextContent : Microsoft.Extensions.AI.AIContent",
       "Stage": "Stable",
diff --git a/src/Libraries/Microsoft.Extensions.AI.OpenAI/OpenAIResponsesContinuationToken.cs b/src/Libraries/Microsoft.Extensions.AI.OpenAI/OpenAIResponsesContinuationToken.cs
index 229f8b40f69..8e6f5ffd71c 100644
--- a/src/Libraries/Microsoft.Extensions.AI.OpenAI/OpenAIResponsesContinuationToken.cs
+++ b/src/Libraries/Microsoft.Extensions.AI.OpenAI/OpenAIResponsesContinuationToken.cs
@@ -53,19 +53,14 @@ public override ReadOnlyMemory<byte> ToBytes()
     /// </summary>
     /// <param name="token">The token to create the <see cref="OpenAIResponsesContinuationToken"/> from.</param>
     /// <returns>A <see cref="OpenAIResponsesContinuationToken"/> equivalent of the provided <paramref name="token"/>.</returns>
-    internal static OpenAIResponsesContinuationToken FromToken(object token)
+    internal static OpenAIResponsesContinuationToken FromToken(ResponseContinuationToken token)
     {
         if (token is OpenAIResponsesContinuationToken openAIResponsesContinuationToken)
         {
             return openAIResponsesContinuationToken;
         }
 
-        if (token is not ResponseContinuationToken)
-        {
-            Throw.ArgumentException(nameof(token), "Failed to create OpenAIResponsesResumptionToken from provided token because it is not of type ResponseContinuationToken.");
-        }
-
-        ReadOnlyMemory<byte> data = ((ResponseContinuationToken)token).ToBytes();
+        ReadOnlyMemory<byte> data = token.ToBytes();
 
         if (data.Length == 0)
         {
diff --git a/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientIntegrationTests.cs b/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientIntegrationTests.cs
index 6a7f82302ea..830563a60e1 100644
--- a/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientIntegrationTests.cs
+++ b/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientIntegrationTests.cs
@@ -315,7 +315,7 @@ public async Task GetStreamingResponseAsync_BackgroundResponses_StreamResumption
 
         int updateNumber = 0;
         string responseText = "";
-        object? continuationToken = null;
+        ResponseContinuationToken? continuationToken = null;
 
         await foreach (var update in ChatClient.GetStreamingResponseAsync("What is the capital of France?", chatOptions))
         {
diff --git a/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientTests.cs b/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientTests.cs
index 299714141fa..0f033185878 100644
--- a/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientTests.cs
+++ b/test/Libraries/Microsoft.Extensions.AI.OpenAI.Tests/OpenAIResponseClientTests.cs
@@ -5151,19 +5151,14 @@ internal TestOpenAIResponsesContinuationToken(string responseId)
         /// <summary>Gets or sets the sequence number of a streamed update.</summary>
         internal int? SequenceNumber { get; set; }
 
-        internal static TestOpenAIResponsesContinuationToken FromToken(object token)
+        internal static TestOpenAIResponsesContinuationToken FromToken(ResponseContinuationToken token)
         {
             if (token is TestOpenAIResponsesContinuationToken testOpenAIResponsesContinuationToken)
             {
                 return testOpenAIResponsesContinuationToken;
             }
 
-            if (token is not ResponseContinuationToken)
-            {
-                throw new ArgumentException("Failed to create OpenAIResponsesResumptionToken from provided token because it is not of type ResponseContinuationToken.", nameof(token));
-            }
-
-            ReadOnlyMemory<byte> data = ((ResponseContinuationToken)token).ToBytes();
+            ReadOnlyMemory<byte> data = token.ToBytes();
 
             Utf8JsonReader reader = new(data.Span);