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← AI PulseSep 15, 2026

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Vercel AI SDK Removes Chat Completions API from @ai-sdk/xai

Vercel has released version 5.0.0 of its @ai-sdk/xai package, which removes the Chat Completions API.

By Illumora Editorial

Source · Sep 15, 2026, 6:33 PM · On Illumora · Sep 15, 2026, 6:37 PM

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Read the source →Vercel AI SDK Changelog — Release @ai-sdk/xai@5.0.0 · vercel/ai
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Vercel released version 5.0.0 of its @ai-sdk/xai package on September 15 at 18:30 UTC, according to the Vercel AI SDK Changelog. This update removes the Chat Completions API from the package.

Key Points

  • The @ai-sdk/xai package version 5.0.0 was released on September 15.
  • This release removes the Chat Completions API from the package.
  • The change is identified by the commit 1f20dba.
  • Previously, version 4.0.59 of @ai-sdk/xai included experimental OpenAI Live provider support.
  • Version 3.0.133 of @ai-sdk/xai preserved additionalProperties: false in tool schemas.

Context

According to the Vercel AI SDK Changelog, the removal of the Chat Completions API is a major change in the @ai-sdk/xai package. Earlier versions of the SDK, such as @ai-sdk/xai@4.0.59, had introduced experimental OpenAI Live provider support and browser-direct WebRTC capabilities for client-delegated Live conversations. Version @ai-sdk/xai@3.0.133 focused on maintaining specific schema properties for tools.

Why It Matters

Developers using the Vercel AI SDK's @ai-sdk/xai package will need to adjust their implementations due to the removal of the Chat Completions API. This change indicates a shift in the intended functionality or scope of the @ai-sdk/xai package within the broader Vercel AI SDK ecosystem.

What To Do

  • Review existing codebases that utilize the @ai-sdk/xai package for dependencies on the Chat Completions API.
  • Consult the Vercel AI SDK documentation for alternative methods or updated API structures for chat functionalities.
  • Compare the features available in @ai-sdk/xai@5.0.0 with previous versions to understand the full scope of changes.
  • Note the September 15 release date for @ai-sdk/xai@5.0.0 when planning updates.