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Vercel AI SDK Adds Grok 4.6 Model IDs and xhigh Reasoning Support

The Vercel AI SDK's @ai-sdk/xai package has been updated across multiple versions to include support for Grok 4.6 model IDs and its xhigh reasoning effort.

By Illumora Editorial

Source · Aug 12, 2026, 3:56 PM · On Illumora · Aug 12, 2026, 4:03 PM

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Read the source →Vercel AI SDK Changelog — Release @ai-sdk/xai@3.0.119 · vercel/ai
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Vercel AI SDK has released updates to its @ai-sdk/xai package, incorporating support for Grok 4.6 model IDs. These updates, noted in releases @ai-sdk/xai@3.0.119, @ai-sdk/xai@4.0.37, and @ai-sdk/xai@2.0.86, also include support for Grok 4.6's xhigh reasoning effort.

Key Points

  • The @ai-sdk/xai@3.0.119 release includes a patch change to add Grok 4.6 model IDs and support for its xhigh reasoning effort.
  • The @ai-sdk/xai@4.0.37 release also features a patch change to add Grok 4.6 model IDs and support for its xhigh reasoning effort.
  • The @ai-sdk/xai@2.0.86 release specifically adds Grok 4.6 models.
  • All three releases were made on August 12.

Context

According to the Vercel AI SDK Changelog, the updates across different versions of the @ai-sdk/xai package integrate Grok 4.6. The inclusion of xhigh reasoning effort support indicates an expansion of the SDK's capabilities for interacting with Grok 4.6's advanced features. The patch changes are identified by commit IDs 451d2c3, a4d386d, and 1e632f7 respectively, and were signed with GitHub’s verified signature.

Why It Matters

Builders using the Vercel AI SDK can now access and leverage the Grok 4.6 model, including its xhigh reasoning capabilities, directly through the @ai-sdk/xai package. This integration allows developers to incorporate Grok 4.6 into their applications, potentially enabling more complex or nuanced AI-driven functionalities.

What To Do

  • Review the Vercel AI SDK Changelog for @ai-sdk/xai versions 3.0.119, 4.0.37, and 2.0.86.
  • Update the @ai-sdk/xai package to one of the versions that includes Grok 4.6 support.
  • Test applications with Grok 4.6 model IDs and its xhigh reasoning effort to understand its performance characteristics.

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