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Vercel AI SDK OpenAI Integration Updated

The Vercel AI SDK has been updated to version @ai-sdk/openai@2.0.126, introducing explicit message item types for Azure AI Foundry Responses requests and asynchronous function tool calling support for OpenAI Responses models.

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Source · Sep 9, 2026, 1:44 PM · On Illumora · Sep 9, 2026, 1:48 PM

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Read the source →Vercel AI SDK Changelog — Release @ai-sdk/openai@2.0.126 · vercel/ai
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The Vercel AI SDK has received an update, with version @ai-sdk/openai@2.0.126 released on September 9.

This update includes two key patch changes aimed at enhancing functionality and compatibility within the SDK's OpenAI integration.

Key Points

  • The Vercel AI SDK version @ai-sdk/openai@2.0.126 was released on September 9.
  • Explicit message item types are now included in Azure AI Foundry Responses requests.
  • Asynchronous function tool calling support has been added for OpenAI Responses models.

Context

According to the Vercel AI SDK Changelog, these patch changes address specific technical improvements. The inclusion of explicit message item types in Azure AI Foundry Responses requests aims to refine how data is handled and interpreted within that environment. The addition of asynchronous function tool calling support for OpenAI Responses models expands the capabilities for interacting with OpenAI models, allowing for more flexible and non-blocking operations.

Why It Matters

These updates enhance the Vercel AI SDK's interoperability with both Azure AI Foundry and OpenAI models. For developers, the added asynchronous tool calling support can lead to more responsive applications by allowing other operations to proceed while a tool call is pending. The explicit message item types contribute to more robust and predictable interactions with Azure AI Foundry services.

What To Do

  • Review the Vercel AI SDK documentation for @ai-sdk/openai@2.0.126 to understand the implications of these changes.
  • Test asynchronous function tool calling with your OpenAI Responses models to leverage the new capabilities.
  • Verify that existing Azure AI Foundry Responses requests continue to function as expected with the updated message item types.