[duplicate] Support for o200k_base and gpt-4o (omni) model

.github/workflows/dotnet-build-test.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [windows-latest, ubuntu-latest, macos-latest]
+        os: [windows-latest, ubuntu-latest]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout repository
@@ -21,6 +21,10 @@ jobs:
             3.1.x
             6.0.x
             8.0.x
+          architecture: x64
+
+      - name: Log .NET SDK versions
+        run: dotnet --info
 
       - name: Restore dependencies
         run: dotnet restore

README.md

@@ -78,6 +78,7 @@ SharpToken currently supports the following models:
 * `p50k_base`
 * `p50k_edit`
 * `cl100k_base`
+* `o200k_base`
 
 You can use any of these models when creating an instance of GptEncoding:
 
@@ -86,6 +87,7 @@ var r50kBaseEncoding = GptEncoding.GetEncoding("r50k_base");
 var p50kBaseEncoding = GptEncoding.GetEncoding("p50k_base");
 var p50kEditEncoding = GptEncoding.GetEncoding("p50k_edit");
 var cl100kBaseEncoding = GptEncoding.GetEncoding("cl100k_base");
+var o200kBaseEncoding = GptEncoding.GetEncoding("o200k_base");
 ```
 
 ### Model Prefix Matching
@@ -96,11 +98,13 @@ Here are the current supported prefixes and their corresponding encodings:
 
 | Model Prefix        | Encoding   |
 |---------------------|------------|
+| `gpt-4o`            | `o200k_base` |
 | `gpt-4-`            | `cl100k_base` |
 | `gpt-3.5-turbo-`    | `cl100k_base` |
 | `gpt-35-turbo`      | `cl100k_base` |
 
 Examples of model names that fall under these prefixes include:
+- For the prefix `gpt-4o`: `gpt-4o`, `gpt-4o-2024-05-13`, etc.
 - For the prefix `gpt-4-`: `gpt-4-0314`, `gpt-4-32k`, etc.
 - For the prefix `gpt-3.5-turbo-`: `gpt-3.5-turbo-0301`, `gpt-3.5-turbo-0401`, etc.
 - For the Azure deployment name `gpt-35-turbo`.
@@ -256,7 +260,7 @@ public class CompareBenchmark
 
         return sum;
     }
-    
+
     [Benchmark]
     public int MLTokenizers()
     {

SharpToken.Benchmark/CompareBenchmark.cs

@@ -20,8 +20,8 @@ public class CompareBenchmark
         private Tokenizer _mlTokenizer;
         private string _kLongText;
 
-        [GlobalSetup]
-        public async Task Setup()
+        [GlobalSetup] // TODO: move this to SetupO200k?
+        public async Task SetupCL100k()
         {
             _sharpToken = GptEncoding.GetEncoding("cl100k_base");
             _tikToken = await TikToken.GetEncodingAsync("cl100k_base").ConfigureAwait(false);
@@ -30,6 +30,15 @@ public async Task Setup()
             _kLongText = "King Lear, one of Shakespeare's darkest and most savage plays, tells the story of the foolish and Job-like Lear, who divides his kingdom, as he does his affections, according to vanity and whim. Lear’s failure as a father engulfs himself and his world in turmoil and tragedy.";
         }
 
+        public async Task SetupO200k()
+        {
+            _sharpToken = GptEncoding.GetEncoding("o200k_base");
+            _tikToken = await TikToken.GetEncodingAsync("o200k_base").ConfigureAwait(false);
+            _tokenizer = await TokenizerBuilder.CreateByModelNameAsync("gpt-4o").ConfigureAwait(false);
+            _mlTokenizer = Tokenizer.CreateTiktokenForModel("gpt-4o");
+            _kLongText = "King Lear, one of Shakespeare's darkest and most savage plays, tells the story of the foolish and Job-like Lear, who divides his kingdom, as he does his affections, according to vanity and whim. Lear’s failure as a father engulfs himself and his world in turmoil and tragedy.";
+        }
+
         [Benchmark]
         public int SharpToken()
         {

SharpToken.Tests/SharpToken.Tests.cs

@@ -6,7 +6,7 @@ namespace SharpToken.Tests;
 
 public class Tests
 {
-    private static readonly List<string> ModelsList = new() { "p50k_base", "r50k_base", "cl100k_base" };
+    private static readonly List<string> ModelsList = new() { "p50k_base", "r50k_base", "cl100k_base", "o200k_base" };
 
     private static readonly List<Tuple<string, string, List<int>>> TestData =
         TestHelpers.ReadTestPlans("SharpToken.Tests.data.TestPlans.txt");
@@ -70,7 +70,6 @@ public async Task TestEncodingAndDecodingInParallel()
         }
     }
 
-
     [Test]
     public void TestEncodingWithCustomAllowedSet()
     {

SharpToken.Tests/data/TestPlanGenerator.py

@@ -35,6 +35,7 @@ def save_test_plans(test_plans, filename):
         tiktoken.get_encoding("p50k_base"),
         tiktoken.get_encoding("p50k_edit"),
         tiktoken.get_encoding("cl100k_base"),
+        tiktoken.get_encoding("o200k_base"),
     ]
 
     test_samples = read_test_samples(samples_filename)

SharpToken/Lib/Internals/ModelParamsGenerator.cs

@@ -53,6 +53,9 @@ public static ModelParams GetModelParams(string encodingName)
                     case "cl100k_base":
                         return Cl100KBase();
 
+                    case "o200k_base":
+                        return O200KBase();
+
                     default:
                         throw new ArgumentException($"Unknown encoding name: {encodingName}");
                 }
@@ -119,6 +122,24 @@ private static ModelParams Cl100KBase()
                 specialTokens: specialTokens
             );
         }
+
+        private static ModelParams O200KBase()
+        {
+            var mergeableRanks = EmbeddedResourceReader.LoadTokenBytePairEncoding("SharpToken.data.o200k_base.tiktoken");
+
+            var specialTokens = new Dictionary<string, int>
+            {
+                { EndOfText, 199999 },
+                { EndOfPrompt, 200018 }
+            };
+
+            return new ModelParams
+            (
+                tokenizerRegex: ModelParamsGeneratorRegex.RegexO200KBase(),
+                mergeableRanks: mergeableRanks,
+                specialTokens: specialTokens
+            );
+        }
     }
 
     internal sealed partial class ModelParamsGeneratorRegex
@@ -129,10 +150,15 @@ internal sealed partial class ModelParamsGeneratorRegex
 
         [GeneratedRegex(@"(?i:'s|'t|'re|'ve|'m|'ll|'d)|[^\r\n\p{L}\p{N}]?\p{L}+|\p{N}{1,3}| ?[^\s\p{L}\p{N}]+[\r\n]*|\s*[\r\n]+|\s+(?!\S)|\s+")]
         public static partial Regex RegexCl100KBase();
+
+        [GeneratedRegex(@"[^\r\n\p{L}\p{N}]?[\p{Lu}\p{Lt}\p{Lm}\p{Lo}\p{M}]*[\p{Ll}\p{Lm}\p{Lo}\p{M}]+(?i:'s|'t|'re|'ve|'m|'ll|'d)?|[^\r\n\p{L}\p{N}]?[\p{Lu}\p{Lt}\p{Lm}\p{Lo}\p{M}]+[\p{Ll}\p{Lm}\p{Lo}\p{M}]*(?i:'s|'t|'re|'ve|'m|'ll|'d)?|\p{N}{1,3}| ?[^\s\p{L}\p{N}]+[\r\n/]*|\s*[\r\n]+|\s+(?!\S)|\s+")]
+        public static partial Regex RegexO200KBase();
 #else
         public static Regex Regex50KBase() => new Regex(@"'s|'t|'re|'ve|'m|'ll|'d| ?\p{L}+| ?\p{N}+| ?[^\s\p{L}\p{N}]+|\s+(?!\S)|\s+", RegexOptions.Compiled);
 
         public static Regex RegexCl100KBase() => new Regex(@"(?i:'s|'t|'re|'ve|'m|'ll|'d)|[^\r\n\p{L}\p{N}]?\p{L}+|\p{N}{1,3}| ?[^\s\p{L}\p{N}]+[\r\n]*|\s*[\r\n]+|\s+(?!\S)|\s+", RegexOptions.Compiled);
+
+        public static Regex RegexO200KBase() => new Regex(@"[^\r\n\p{L}\p{N}]?[\p{Lu}\p{Lt}\p{Lm}\p{Lo}\p{M}]*[\p{Ll}\p{Lm}\p{Lo}\p{M}]+(?i:'s|'t|'re|'ve|'m|'ll|'d)?|[^\r\n\p{L}\p{N}]?[\p{Lu}\p{Lt}\p{Lm}\p{Lo}\p{M}]+[\p{Ll}\p{Lm}\p{Lo}\p{M}]*(?i:'s|'t|'re|'ve|'m|'ll|'d)?|\p{N}{1,3}| ?[^\s\p{L}\p{N}]+[\r\n/]*|\s*[\r\n]+|\s+(?!\S)|\s+", RegexOptions.Compiled);
 #endif
     }
 }

SharpToken/Lib/Model.cs

@@ -8,6 +8,7 @@ public static class Model
         private static readonly Dictionary<string, string> ModelToEncodingMapping = new Dictionary<string, string>
         {
             // chat
+            { "gpt-4o", "o200k_base" },
             { "gpt-4", "cl100k_base" },
             { "gpt-3.5-turbo-16k", "cl100k_base" },
             { "gpt-35-turbo-16k", "cl100k_base" }, // Azure deployment name
@@ -53,6 +54,7 @@ public static class Model
 
         private static readonly Dictionary<string, string> ModelPrefixToEncodingMapping = new Dictionary<string, string>
         {
+            { "gpt-4o", "o200k_base" }, // (NOTE: no trailing dash, on purpose). E.g., gpt-4o, gpt-4o-2024-05-13, etc.,
             { "gpt-4-", "cl100k_base" }, // e.g., gpt-4-0314, etc., plus gpt-4-32k
             { "gpt-3.5-turbo-", "cl100k_base" }, // e.g, gpt-3.5-turbo-0301, -0401, etc.
             { "gpt-35-turbo", "cl100k_base" }, // Azure deployment name

SharpToken/SharpToken.csproj

@@ -33,11 +33,13 @@
     <None Remove="Lib\" />
     <None Remove="data\" />
     <None Remove="data\cl100k_base.tiktoken" />
+    <None Remove="data\o200k_base.tiktoken" />
     <None Remove="data\p50k_base.tiktoken" />
     <None Remove="data\r50k_base.tiktoken" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="data\cl100k_base.tiktoken" />
+    <EmbeddedResource Include="data\o200k_base.tiktoken" />
     <EmbeddedResource Include="data\p50k_base.tiktoken" />
     <EmbeddedResource Include="data\r50k_base.tiktoken" />
   </ItemGroup>