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gewarren merged 3 commits into from
Dec 11, 2025
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Add new MEAI features to overview - Fixes #50101 #50126

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Add new MEAI features to overview - Fixes #50101
Gnanasaikiran Nov 25, 2025
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meaghanlewis Nov 26, 2025
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meaghanlewis Nov 26, 2025
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16 changes: 16 additions & 0 deletions docs/ai/microsoft-extensions-ai.md
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Expand Up @@ -40,6 +40,8 @@ The following subsections show specific [`IChatClient`](#the-ichatclient-interfa
- [Custom `IChatClient` middleware](#custom-ichatclient-middleware)
- [Dependency injection](#dependency-injection)
- [Stateless vs. stateful clients](#stateless-vs-stateful-clients)
- [Chat reduction (experimental)](#chat-reduction-experimental)
- [Tool reduction (experimental)](#tool-reduction-experimental)

The following sections show specific [`IEmbeddingGenerator`](#the-iembeddinggenerator-interface) usage examples:

Expand Down Expand Up @@ -198,6 +200,20 @@ If you don't know ahead of time whether the service is stateless or stateful, yo

:::code language="csharp" source="snippets/microsoft-extensions-ai/ConsoleAI.StatelessStateful/Program.cs" id="Snippet4":::

#### Chat reduction (experimental)

> [!IMPORTANT]
> This feature is experimental and subject to change.

Chat reduction helps manage conversation history by limiting the number of messages or summarizing older messages when the conversation exceeds a specified length. The `Microsoft.Extensions.AI` library provides reducers like <xref:Microsoft.Extensions.AI.MessageCountingChatReducer> that limits the number of non-system messages, and <xref:Microsoft.Extensions.AI.SummarizingChatReducer> that automatically summarizes older messages while preserving context.

#### Tool reduction (experimental)

> [!IMPORTANT]
> This feature is experimental and subject to change.

Tool reduction helps manage large tool catalogs by trimming them based on relevance to the current conversation context. The <xref:Microsoft.Extensions.AI.IToolReductionStrategy> interface defines strategies for reducing the number of tools sent to the model. The library provides implementations like <xref:Microsoft.Extensions.AI.EmbeddingToolReductionStrategy> that ranks tools by embedding similarity to the conversation. Use the <xref:Microsoft.Extensions.AI.ChatClientBuilderToolReductionExtensions.UseToolReduction*> extension method to add tool reduction to your chat client pipeline.

### The `IEmbeddingGenerator` interface

The <xref:Microsoft.Extensions.AI.IEmbeddingGenerator`2> interface represents a generic generator of embeddings. For the generic type parameters, `TInput` is the type of input values being embedded, and `TEmbedding` is the type of generated embedding, which inherits from the <xref:Microsoft.Extensions.AI.Embedding> class.
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