diff --git a/src/Directory.Packages.props b/src/Directory.Packages.props
index 576aefe5..dfb7f712 100644
--- a/src/Directory.Packages.props
+++ b/src/Directory.Packages.props
@@ -19,7 +19,7 @@
     <PackageVersion Include="DotNet.ReproducibleBuilds" Version="1.1.1" />
     <PackageVersion Include="FluentAssertions" Version="6.12.0" />
     <PackageVersion Include="GitHubActionsTestLogger" Version="2.4.1" />
-    <PackageVersion Include="Google_GenerativeAI" Version="1.0.0" />
+    <PackageVersion Include="Google_GenerativeAI" Version="1.0.1" />
     <PackageVersion Include="GroqSharp" Version="1.1.2" />
     <PackageVersion Include="H.Generators.Extensions" Version="1.22.0" />
     <PackageVersion Include="H.NSwag.Generator" Version="14.0.7.76">
diff --git a/src/Providers/Google/src/GoogleChatModel.Tokens.cs b/src/Providers/Google/src/GoogleChatModel.Tokens.cs
new file mode 100644
index 00000000..18033fab
--- /dev/null
+++ b/src/Providers/Google/src/GoogleChatModel.Tokens.cs
@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using GenerativeAI.Types;
+
+namespace LangChain.Providers.Google
+{
+    public partial class GoogleChatModel
+    {
+        public async Task<int> CountTokens(string text)
+        {
+            return await CountTokens(new Message[] { new Message(text, MessageRole.Human) }).ConfigureAwait(false);
+        }
+
+        public async Task<int> CountTokens(IEnumerable<Message> messages)
+        { 
+            var response = await this.Api.CountTokens(new CountTokensRequest() { Contents = messages.Select(ToRequestMessage).ToArray() }).ConfigureAwait(false);
+
+            return response.TotalTokens;
+        }
+    }
+}
diff --git a/src/Providers/Google/src/GoogleChatModel.cs b/src/Providers/Google/src/GoogleChatModel.cs
index da1d26a5..850baca5 100644
--- a/src/Providers/Google/src/GoogleChatModel.cs
+++ b/src/Providers/Google/src/GoogleChatModel.cs
@@ -127,11 +127,16 @@ public override async Task<ChatResponse> GenerateAsync(
             settings,
             Settings,
             provider.ChatSettings);
+        var usage = Usage.Empty;
 
         if (usedSettings.UseStreaming == true)
         {
             var message = await StreamCompletionAsync(messages, cancellationToken).ConfigureAwait(false);
             messages.Add(message);
+            usage += Usage.Empty with
+            {
+                Time = watch.Elapsed
+            };
         }
         else
         {
@@ -145,14 +150,14 @@ public override async Task<ChatResponse> GenerateAsync(
             OnCompletedResponseGenerated(response.Text() ?? string.Empty);
 
 
-            var usage2 = GetUsage(response) with
+            usage = GetUsage(response) with
             {
                 Time = watch.Elapsed
             };
 
             //Add Usage
-            AddUsage(usage2);
-            provider.AddUsage(usage2);
+            AddUsage(usage);
+            provider.AddUsage(usage);
 
             //Handle Function Call
             while (ReplyToToolCallsAutomatically && response.IsFunctionCall())
@@ -185,28 +190,21 @@ public override async Task<ChatResponse> GenerateAsync(
                     messages.Add(message);
 
                     //Add Usage
-                    usage2 = GetUsage(response) with
+                    var usage2 = GetUsage(response) with
                     {
                         Time = watch.Elapsed
                     };
                     AddUsage(usage2);
                     provider.AddUsage(usage2);
+                    usage += usage2;
                 }
             }
         }
-
-        //Add Usage
-        var usage = Usage.Empty with
-        {
-            Time = watch.Elapsed
-        };
-        AddUsage(usage);
-        provider.AddUsage(usage);
-
+        
         return new ChatResponse
         {
             Messages = messages,
-            Usage = Usage,
+            Usage = usage,
             UsedSettings = ChatSettings.Default
         };
     }
diff --git a/src/Providers/Google/src/Predefined/GeminiModels.cs b/src/Providers/Google/src/Predefined/GeminiModels.cs
index 0693e346..7dfa37fe 100644
--- a/src/Providers/Google/src/Predefined/GeminiModels.cs
+++ b/src/Providers/Google/src/Predefined/GeminiModels.cs
@@ -24,4 +24,4 @@ public class Gemini15FlashModel(GoogleProvider provider)
 public class Gemini15ProModel(GoogleProvider provider)
     : GoogleChatModel(
         provider,
-        GoogleAIModels.Gemini15Flash, 2 * 1024 * 1024, 3.5 * 0.000001, 10.50 * 0.000001, 7.0 * 0.000001, 21.00 * 0.000001);
+        GoogleAIModels.Gemini15Pro, 2 * 1024 * 1024, 3.5 * 0.000001, 10.50 * 0.000001, 7.0 * 0.000001, 21.00 * 0.000001);
diff --git a/src/Providers/OpenAI/src/Chat/OpenAiChatModel.cs b/src/Providers/OpenAI/src/Chat/OpenAiChatModel.cs
index 9c22235c..a344caa6 100644
--- a/src/Providers/OpenAI/src/Chat/OpenAiChatModel.cs
+++ b/src/Providers/OpenAI/src/Chat/OpenAiChatModel.cs
@@ -266,12 +266,13 @@ public override async Task<ChatResponse> GenerateAsync(
                     OnPartialResponseGenerated(Environment.NewLine);
                     OnCompletedResponseGenerated(newMessage.Content);
 
-                    usage = GetUsage(response) with
+                    var usage2 = GetUsage(response) with
                     {
                         Time = watch.Elapsed,
                     };
-                    AddUsage(usage);
-                    provider.AddUsage(usage);
+                    AddUsage(usage2);
+                    provider.AddUsage(usage2);
+                    usage += usage2;
                 }
             }