Prepare 2.5.0 release

Author: joseharriaga

CHANGELOG.md

@@ -1,5 +1,23 @@
 # Release History
 
+## 2.5.0 (2025-09-23)
+
+### Features Added
+
+- OpenAI.Responses:
+  - Added the `Model` property to `OpenAIResponseClient`.
+  - Added the `ServiceDescription` property to `McpTool`.
+  - Enabled support for connectors, which are OpenAI-maintained MCP wrappers for popular services like Microsoft Outlook or Dropbox.
+    - Added the `ConnectorId` property to `McpTool`.
+  - Enabled support for authentication with remote MCP servers.
+    - Added the `AuthorizationToken` property to `McpTool`.
+
+### Bugs Fixed
+
+- OpenAI.Responses:
+  - Fixed an issue with the constructor of `McpToolCallApprovalRequestItem` not taking the item ID as a parameter. MCP approval requests are correlated to MCP approval responses using this ID, which implies that this ID should be required.
+  - Fixed an issue with some of the MCP-related `StreamingResponseUpdate` classes missing the `ItemId` and `OutputIndex` properties.
+
 ## 2.4.0 (2025-09-05)
 
 ### Features Added

scripts/Test-ApiCompatibility.ps1

@@ -177,5 +177,5 @@ $experimentalNamespaces = @(
 Invoke-APICompat -ProjectPath $projectPath `
     -ReleasePath $releasePath `
     -PackageName "OpenAI" `
-    -BaselineVersion "2.3.0" `
+    -BaselineVersion "2.4.0" `
     -IgnoredNamespaces $experimentalNamespaces

src/OpenAI.csproj

@@ -8,7 +8,7 @@
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Copyright>Copyright (c) 2024 OpenAI (https://openai.com)</Copyright>
 
-    <VersionPrefix>2.4.0</VersionPrefix>
+    <VersionPrefix>2.5.0</VersionPrefix>
     <VersionSuffix></VersionSuffix>
 
     <TargetFrameworks>net8.0;netstandard2.0</TargetFrameworks>