Microsoft.ML.Tokenizers.Data.O200kBase 1.0.3

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There is a newer version of this package available.
See the version list below for details.

dotnet add package Microsoft.ML.Tokenizers.Data.O200kBase --version 1.0.3

NuGet\Install-Package Microsoft.ML.Tokenizers.Data.O200kBase -Version 1.0.3

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="1.0.3" />

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="1.0.3" />
                    

                            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 1.0.3

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Microsoft.ML.Tokenizers.Data.O200kBase, 1.0.3"

#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@1.0.3

#: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=1.0.3
                    

                            Install as a Cake Addin

#tool nuget:?package=Microsoft.ML.Tokenizers.Data.O200kBase&version=1.0.3
                    

                            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

API documentation

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

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

.NETStandard 2.0
- Microsoft.ML.Tokenizers (>= 1.0.3)

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Version	Downloads	Last Updated
2.0.0	4,211	11/11/2025
2.0.0-preview.25527.5	4,368	10/29/2025
2.0.0-preview.25503.2	4,177	10/3/2025
2.0.0-preview.25373.1	11,651	7/28/2025
2.0.0-preview.1.25127.4	40,497	2/28/2025
2.0.0-preview.1.25125.4	215	2/25/2025
1.0.3	7,605	10/28/2025
1.0.2	386,911	2/26/2025
1.0.1	183,148	1/15/2025
1.0.0	552,209	11/14/2024
0.22.0	2,699	11/13/2024
0.22.0-preview.24526.1	1,522	10/27/2024
0.22.0-preview.24522.7	302	10/23/2024

https://aka.ms/mlnetreleasenotes