diff --git a/src/Libraries/Microsoft.Extensions.AI.Abstractions/CHANGELOG.md b/src/Libraries/Microsoft.Extensions.AI.Abstractions/CHANGELOG.md
index b34c143af77..e43507eb241 100644
--- a/src/Libraries/Microsoft.Extensions.AI.Abstractions/CHANGELOG.md
+++ b/src/Libraries/Microsoft.Extensions.AI.Abstractions/CHANGELOG.md
@@ -2,8 +2,15 @@
 
 ## NOT YET RELEASED
 
+- Updated `AIFunctionFactory` to respect `[DisplayName(...)]` on functions as a way to override the function name.
+- Updated `AIFunctionFactory` to respect `[DefaultValue(...)]` on function parameters as a way to specify default values.
+
+## 9.10.1
+
 - Updated `HostedMcpServerTool` to allow for non-`Uri` server addresses, in order to enable built-in names.
 - Updated `HostedMcpServerTool` to replace the header collection with an `AuthorizationToken` property.
+- Fixed `ToChatResponse{Async}` to not discard `TextReasoningContent.ProtectedData` when coalescing messages.
+- Fixed `AIFunctionFactory.Create` to special-case return types of `AIContent` and `IEnumerable<AIContent>` to not automatically JSON serialize them.
 
 ## 9.10.0
 
diff --git a/src/Libraries/Microsoft.Extensions.AI.AzureAIInference/CHANGELOG.md b/src/Libraries/Microsoft.Extensions.AI.AzureAIInference/CHANGELOG.md
index 69244226a92..60423003454 100644
--- a/src/Libraries/Microsoft.Extensions.AI.AzureAIInference/CHANGELOG.md
+++ b/src/Libraries/Microsoft.Extensions.AI.AzureAIInference/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Release History
 
+## 9.10.1-preview.1.25521.4
+
+- No changes.
+
 ## 9.10.0-preview.1.25513.3
 
 - Updated to accommodate the additions in `Microsoft.Extensions.AI.Abstractions`.
diff --git a/src/Libraries/Microsoft.Extensions.AI.OpenAI/CHANGELOG.md b/src/Libraries/Microsoft.Extensions.AI.OpenAI/CHANGELOG.md
index 6438aa924a7..55009861611 100644
--- a/src/Libraries/Microsoft.Extensions.AI.OpenAI/CHANGELOG.md
+++ b/src/Libraries/Microsoft.Extensions.AI.OpenAI/CHANGELOG.md
@@ -1,8 +1,9 @@
 # Release History
 
-## NOT YET RELEASED
+## 9.10.1-preview.1.25521.4
 
-- Updated `IChatClient` for Responses API to support connectors with `HostedMcpServerTool`.
+- Updated the `IChatClient` for the OpenAI Responses API to support connectors with `HostedMcpServerTool`.
+- Fixed the `IChatClient` for the OpenAI Responses API to roundtrip a `ResponseItem` stored in an `AIContent` in a `ChatRole.User` message.
 - Updated to accommodate the additions in `Microsoft.Extensions.AI.Abstractions`.
 
 ## 9.10.0-preview.1.25513.3
diff --git a/src/Libraries/Microsoft.Extensions.AI/CHANGELOG.md b/src/Libraries/Microsoft.Extensions.AI/CHANGELOG.md
index e143b74b437..5b099dbd62f 100644
--- a/src/Libraries/Microsoft.Extensions.AI/CHANGELOG.md
+++ b/src/Libraries/Microsoft.Extensions.AI/CHANGELOG.md
@@ -1,6 +1,9 @@
 # Release History
 
-## NOT YET RELEASED
+## 9.10.1
+
+- Added an `[Experimental]` implementation of tool reduction component for constraining the set of tools exposed.
+- Fixed `SummarizingChatReducer` to preserve function calling content in the chat history.
 
 ## 9.10.0