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Vercel AI SDK Adds Z.AI Provider and GLM-5.3-Flash Support

The Vercel AI SDK has introduced a new Z.AI provider, offering GLM chat completions, streaming, reasoning, tools, and multimodal inputs, alongside support for the GLM-5.3-Flash model in both the Z.AI provider and AI Gateway.

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Source · Aug 26, 2026, 6:00 PM · On Illumora · Aug 26, 2026, 6:08 PM

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Read the source →Vercel AI SDK Changelog — Release @ai-sdk/gateway@3.0.183 · vercel/ai
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Vercel has released updates to its AI SDK, including the introduction of a new Z.AI provider as part of the @ai-sdk/zai@2.0.0 package. This new provider supports GLM chat completions, streaming capabilities, reasoning, tool integration, and multimodal inputs. Additionally, the update adds support for the GLM-5.3-Flash model within the Z.AI provider and the AI Gateway.

Key Points

  • The Z.AI provider has been added to the Vercel AI SDK with version @ai-sdk/zai@2.0.0.
  • This provider supports GLM chat completions, streaming, reasoning, tools, and multimodal inputs.
  • The GLM-5.3-Flash model is now supported by the Z.AI provider.
  • The AI Gateway also includes support for the GLM-5.3-Flash model.
  • The @ai-sdk/amazon-bedrock@4.0.163 package now preserves complete Amazon Bedrock Converse usage objects in raw usage metadata.
  • The @ai-sdk/moonshotai@2.0.51 package accepts Moonshot streaming tool calls without indices and preserves choice-level data.

Context

According to the Vercel AI SDK changelog, these updates are part of a series of releases across various SDK packages. The @ai-sdk/gateway@3.0.183 package specifically includes the backported support for the GLM-5.3-Flash model. Other packages like @ai-sdk/angular@2.0.269, @ai-sdk/langchain@2.0.276, and @ai-sdk/llamaindex@2.0.268 also received updates, with their dependencies updated to ai@6.0.268.

Why It Matters

These updates expand the range of models and providers available to developers using the Vercel AI SDK, offering new capabilities such as GLM chat completions and multimodal inputs through the Z.AI provider. The addition of GLM-5.3-Flash support in the AI Gateway also broadens the options for model deployment and integration, while enhanced usage metadata for Amazon Bedrock Converse can improve cost tracking and analysis.

What To Do

  • Note the availability of the new Z.AI provider for GLM models.
  • Test the GLM-5.3-Flash model through the Z.AI provider or AI Gateway.
  • Review the updated usage metadata for Amazon Bedrock Converse if using that integration.
  • Check the @ai-sdk/moonshotai package for changes in handling streaming tool calls.