Stream Text (AI SDK) - Phaseo Docs

Use streamText when you want partial tokens as they arrive.

import { phaseo } from "@phaseo/ai-sdk-provider";
import { streamText } from "ai";

const result = streamText({
  model: phaseo("openai/gpt-5-nano"),
  prompt: "Explain SSE streaming in plain language.",
});

for await (const chunk of result.textStream) {
  process.stdout.write(chunk);
}

console.log(await result.providerMetadata);

Streaming with messages

import { phaseo } from "@phaseo/ai-sdk-provider";
import { streamText } from "ai";

const result = streamText({
  model: phaseo("openai/gpt-5-nano"),
  messages: [
    { role: "user", content: "Write a five-step rollout plan for a gateway migration." },
  ],
});

let text = "";
for await (const chunk of result.textStream) {
  text += chunk;
}

console.log(text);
console.log(await result.providerMetadata);

Production tips

Prefer streaming for long responses and interactive UIs.
Handle cancellation/timeout in your runtime for abandoned streams.
Keep model IDs fresh via /v1/models to avoid stale aliases.

Last modified on July 26, 2026