diff --git a/LLama/LLamaSharp.csproj b/LLama/LLamaSharp.csproj
index fd1a31c2..76579153 100644
--- a/LLama/LLamaSharp.csproj
+++ b/LLama/LLamaSharp.csproj
@@ -8,7 +8,7 @@
     <Platforms>AnyCPU;x64</Platforms>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
 
-    <Version>0.2.4</Version>
+    <Version>0.3.0</Version>
     <Authors>Yaohui Liu, Haiping Chen</Authors>
     <Company>SciSharp STACK</Company>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
@@ -18,10 +18,10 @@
     <PackageIconUrl>https://avatars3.githubusercontent.com/u/44989469?s=200&amp;v=4</PackageIconUrl>
     <PackageTags>LLama, LLM, GPT, ChatGPT, NLP, AI, Chat Bot, SciSharp</PackageTags>
     <Description>
-      The .NET binding of LLama.cpp, providing APIs to run the model and deploy it on Web.
+      The .NET binding of LLama.cpp, providing APIs to run the model and deploy it on Web. For model weights to run, please go to https://github.com/SciSharp/LLamaSharp for more information.
     </Description>
     <PackageReleaseNotes>
-      LLama 0.2.4 mainly supports loading and saving session state.
+      LLamaSharp 0.3.0 supports loading and saving session state, tokenization and detokenization. Besides, since 0.3.0, `LLamaModelV1` is dropped.
     </PackageReleaseNotes>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageOutputPath>packages</PackageOutputPath>
@@ -35,7 +35,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <None Include="..\README.md" Pack="true" PackagePath="\"/>
+    <None Include="..\README.md" Pack="true" PackagePath="\" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
diff --git a/LLama/LLamaTypes.cs b/LLama/LLamaTypes.cs
new file mode 100644
index 00000000..cee9338f
--- /dev/null
+++ b/LLama/LLamaTypes.cs
@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace LLama.Types
+{
+    public enum ChatRole
+    {
+        Human,
+        Assistant
+    }
+    public record EmbeddingUsage(int PromptTokens, int TotalTokens);
+
+    public record EmbeddingData(int Index, string Object, float[] Embedding);
+
+    public record Embedding(string Object, string Model, EmbeddingData[] Data, EmbeddingUsage Usage);
+
+    public record CompletionLogprobs(int[] TextOffset, float[] TokenLogProbs, string[] Tokens, Dictionary<string, float>[] TopLogprobs);
+
+    public record CompletionChoice(string Text, int Index, CompletionLogprobs? Logprobs, string? FinishReason);
+
+    public record CompletionUsage(int PromptTokens, int CompletionTokens, int TotalTokens);
+
+    public record CompletionChunk(string Id, string Object, int Created, string Model, CompletionChoice[] Choices);
+
+    public record Completion(string Id, string Object, int Created, string Model, CompletionChoice[] Choices, CompletionUsage Usage);
+
+    public record ChatCompletionMessage(ChatRole Role, string Content, string? Name = null);
+
+    public record ChatCompletionChoice(int Index, ChatCompletionMessage Message, string? FinishReason);
+
+    public record ChatCompletion(string Id, string Object, int Created, string Model, ChatCompletionChoice[] Choices, CompletionUsage Usage);
+
+    public record ChatCompletionChunkDelta(string? Role, string? Content);
+
+    public record ChatCompletionChunkChoice(int Index, ChatCompletionChunkDelta Delta, string? FinishReason);
+
+    public record ChatCompletionChunk(string Id, string Model, string Object, int Created, ChatCompletionChunkChoice[] Choices);
+
+    public record ChatMessageRecord(ChatCompletionMessage Message, DateTime Time);
+}