MessageCountingChatReducer Class
Definition
Important
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Provides a chat reducer that limits the number of non-system messages in a conversation to a specified maximum count, preserving the most recent messages and the first system message if present.
public ref class MessageCountingChatReducer sealed : Microsoft::Extensions::AI::IChatReducer[System.Diagnostics.CodeAnalysis.Experimental("MEAI001")]
public sealed class MessageCountingChatReducer : Microsoft.Extensions.AI.IChatReducerpublic sealed class MessageCountingChatReducer : Microsoft.Extensions.AI.IChatReducer[<System.Diagnostics.CodeAnalysis.Experimental("MEAI001")>]
type MessageCountingChatReducer = class
interface IChatReducertype MessageCountingChatReducer = class
interface IChatReducerPublic NotInheritable Class MessageCountingChatReducer
Implements IChatReducer- Inheritance
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MessageCountingChatReducer
- Attributes
- Implements
Remarks
This reducer is useful for scenarios where it is necessary to constrain the size of a chat history, such as when preparing input for models with context length limits. The reducer always includes the first encountered system message, if any, and then retains up to the specified number of the most recent non-system messages. Messages containing function call or function result content are excluded from the reduced output.
Constructors
| MessageCountingChatReducer(Int32) |
Initializes a new instance of the MessageCountingChatReducer class. |
Methods
| ReduceAsync(IEnumerable<ChatMessage>, CancellationToken) |
Reduces the size of a list of chat messages. |
