streamText
The most commonly used streaming text generation API in the AI SDK. Tool calls are validated and executed within its request-response lifecycle, allowing generated text and tool invocations to be handled together. It returns a streaming result that can be consumed incrementally by client applications.
Core Facts
Timeline (last 90 days)
Commit 6ac1ee1 makes WorkflowAgent use the original tool schema to validate and normalize tool input, thereby staying consistent with streamText behavior.
streamText is a commonly used streaming text generation API in the AI SDK, and tool calls complete validation and execution within its synchronous request-response lifecycle.
The aligned behaviors include: default values, transforms, type coercion, refinement validation, unknown key handling, custom validators, repairToolCall, and various lifecycle callbacks.
In the AI SDK, developers use unified core functions such as generateText, streamText and generateObject, and which provider's model is actually called is determined by the provider instance
Updates to internal utility packages such as workflow-harness are imperceptible to most developers using the upper-level API and do not change the way generateText, streamText, or Agent workflows are called.
Vercel AI SDK wraps tool calling into a unified generateText/streamText API, where developers only need to declare the tool's JSON Schema without manually managing the finish_reason: tool_calls state machine.
Vercel AI SDK provides unified abstract interfaces (such as generateText and streamText), allowing developers to maintain a consistent coding style when calling different model providers.
All Facts (7)
Vercel AI SDK provides unified abstract interfaces (such as generateText and streamText), allowing developers to maintain a consistent coding style when calling different model providers.
90%UnverifiedCommit 6ac1ee1 makes WorkflowAgent use the original tool schema to validate and normalize tool input, thereby staying consistent with streamText behavior.
50%UnverifiedstreamText is a commonly used streaming text generation API in the AI SDK, and tool calls complete validation and execution within its synchronous request-response lifecycle.
50%UnverifiedThe aligned behaviors include: default values, transforms, type coercion, refinement validation, unknown key handling, custom validators, repairToolCall, and various lifecycle callbacks.
50%UnverifiedIn the AI SDK, developers use unified core functions such as generateText, streamText and generateObject, and which provider's model is actually called is determined by the provider instance
50%UnverifiedUpdates to internal utility packages such as workflow-harness are imperceptible to most developers using the upper-level API and do not change the way generateText, streamText, or Agent workflows are called.
50%UnverifiedVercel AI SDK wraps tool calling into a unified generateText/streamText API, where developers only need to declare the tool's JSON Schema without manually managing the finish_reason: tool_calls state machine.
50%