Function streamText

Stateless streaming text generation with optional multi-step tool calling.

Returns a StreamTextResult immediately; the underlying provider call begins lazily when a consumer starts iterating textStream or fullStream. Awaiting text, usage, or toolCalls will also drain the stream.

Example

const { textStream } = streamText({ model: 'openai:gpt-4o', prompt: 'Tell me a joke.' });
for await (const chunk of textStream) {
  process.stdout.write(chunk);
}
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