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 Microsoft.ML.Tokenizers.Data.O200kBase 2.0.0

Prefix Reserved
There is a newer prerelease version of this package available.
See the version list below for details. 
dotnet add package Microsoft.ML.Tokenizers.Data.O200kBase --version 2.0.0
 
 
NuGet\Install-Package Microsoft.ML.Tokenizers.Data.O200kBase -Version 2.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="Microsoft.ML.Tokenizers.Data.O200kBase" Version="2.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="Microsoft.ML.Tokenizers.Data.O200kBase" Version="2.0.0" />
 


 Directory.Packages.props
 

 

 
<PackageReference Include="Microsoft.ML.Tokenizers.Data.O200kBase" />
 


 Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add Microsoft.ML.Tokenizers.Data.O200kBase --version 2.0.0
The NuGet Team does not provide support for this client. Please contact its maintainers for support. 
#r "nuget: Microsoft.ML.Tokenizers.Data.O200kBase, 2.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package Microsoft.ML.Tokenizers.Data.O200kBase@2.0.0
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=Microsoft.ML.Tokenizers.Data.O200kBase&version=2.0.0
 


 Install as a Cake Addin
 

 

 
#tool nuget:?package=Microsoft.ML.Tokenizers.Data.O200kBase&version=2.0.0
 


 Install as a Cake Tool
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

About

The Microsoft.ML.Tokenizers.Data.O200kBase includes the Tiktoken tokenizer data file o200k_base.tiktoken, which is utilized by models such as Gpt-4o.

Key Features

  • This package mainly contains the o200k_base.tiktoken file, which is used by the Tiktoken tokenizer. This data file is used by the Gpt-4o model.

How to Use

Reference this package in your project to use the Tiktoken tokenizer with the specified model.


// Create a tokenizer for the specified model
Tokenizer tokenizer = TiktokenTokenizer.CreateForModel("Gpt-4o");

// Create a tokenizer for the specified encoding
Tokenizer tokenizer = TiktokenTokenizer.CreateForEncoding("o200k_base");

Main Types

Users shouldn't use any types exposed by this package directly. This package is intended to provide tokenizer data files.

Additional Documentation

Related Packages

Microsoft.ML.Tokenizers

Feedback & Contributing

Microsoft.ML.Tokenizers.Data.O200kBase is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Product Versions Compatible and additional computed target framework versions.
.NET net5.0 net5.0 was computed.  net5.0-windows net5.0-windows was computed.  net6.0 net6.0 was computed.  net6.0-android net6.0-android was computed.  net6.0-ios net6.0-ios was computed.  net6.0-maccatalyst net6.0-maccatalyst was computed.  net6.0-macos net6.0-macos was computed.  net6.0-tvos net6.0-tvos was computed.  net6.0-windows net6.0-windows was computed.  net7.0 net7.0 was computed.  net7.0-android net7.0-android was computed.  net7.0-ios net7.0-ios was computed.  net7.0-maccatalyst net7.0-maccatalyst was computed.  net7.0-macos net7.0-macos was computed.  net7.0-tvos net7.0-tvos was computed.  net7.0-windows net7.0-windows was computed.  net8.0 net8.0 was computed.  net8.0-android net8.0-android was computed.  net8.0-browser net8.0-browser was computed.  net8.0-ios net8.0-ios was computed.  net8.0-maccatalyst net8.0-maccatalyst was computed.  net8.0-macos net8.0-macos was computed.  net8.0-tvos net8.0-tvos was computed.  net8.0-windows net8.0-windows was computed.  net9.0 net9.0 was computed.  net9.0-android net9.0-android was computed.  net9.0-browser net9.0-browser was computed.  net9.0-ios net9.0-ios was computed.  net9.0-maccatalyst net9.0-maccatalyst was computed.  net9.0-macos net9.0-macos was computed.  net9.0-tvos net9.0-tvos was computed.  net9.0-windows net9.0-windows was computed.  net10.0 net10.0 was computed.  net10.0-android net10.0-android was computed.  net10.0-browser net10.0-browser was computed.  net10.0-ios net10.0-ios was computed.  net10.0-maccatalyst net10.0-maccatalyst was computed.  net10.0-macos net10.0-macos was computed.  net10.0-tvos net10.0-tvos was computed.  net10.0-windows net10.0-windows was computed. 
.NET Core netcoreapp2.0 netcoreapp2.0 was computed.  netcoreapp2.1 netcoreapp2.1 was computed.  netcoreapp2.2 netcoreapp2.2 was computed.  netcoreapp3.0 netcoreapp3.0 was computed.  netcoreapp3.1 netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 netstandard2.0 is compatible.  netstandard2.1 netstandard2.1 was computed. 
.NET Framework net461 net461 was computed.  net462 net462 was computed.  net463 net463 was computed.  net47 net47 was computed.  net471 net471 was computed.  net472 net472 was computed.  net48 net48 was computed.  net481 net481 was computed. 
MonoAndroid monoandroid monoandroid was computed. 
MonoMac monomac monomac was computed. 
MonoTouch monotouch monotouch was computed. 
Tizen tizen40 tizen40 was computed.  tizen60 tizen60 was computed. 
Xamarin.iOS xamarinios xamarinios was computed. 
Xamarin.Mac xamarinmac xamarinmac was computed. 
Xamarin.TVOS xamarintvos xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages (18)

Showing the top 5 NuGet packages that depend on Microsoft.ML.Tokenizers.Data.O200kBase:

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Version Downloads Last Updated
3.0.0-preview.26160.2 12,531 3/12/2026
2.0.0 535,859 11/11/2025
2.0.0-preview.25527.5 27,582 10/29/2025
2.0.0-preview.25503.2 7,660 10/3/2025
2.0.0-preview.25373.1 18,561 7/28/2025
2.0.0-preview.1.25127.4 52,619 2/28/2025
2.0.0-preview.1.25125.4 357 2/25/2025
1.0.3 64,612 10/28/2025
1.0.2 860,094 2/26/2025
1.0.1 270,931 1/15/2025
1.0.0 868,089 11/14/2024
0.22.0 14,663 11/13/2024
0.22.0-preview.24526.1 1,590 10/27/2024
0.22.0-preview.24522.7 1,086 10/23/2024

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