streamText breaks when switching from openai to google provider

[dancer]

I switched my app from openai to google provider and now streamText throws errors. The same code works fine with openai.

import { google } from "@ai-sdk/google"
import { streamText } from "ai"

const result = streamText({
  model: google("gemini-2.5-flash"),
  prompt: "tell me a story",
})

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

Throws: TypeError: Cannot read properties of undefined (reading 'choices')

This seems like a compatibility issue between providers. Using ai@6.0.1.

[dancer]

@tigent wrong, should be support, ai/provider, provider/google