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OpenAI

GPT-Realtime-1.5

GPT-Realtime-1.5 is OpenAI's flagship audio model for voice agents and customer support, handling speech-to-speech conversation with stronger instruction following and more reliable tool calling than earlier realtime preview models.

index.ts
import { gateway } from '@ai-sdk/gateway';


export async function POST() {
  const { token, url } = await gateway.experimental_realtime.getToken({
    model: 'openai/gpt-realtime-1.5',
  });


  return Response.json({ token, url, tools: [] });
}
OverviewAboutProvidersSimilarFAQ

Frequently Asked Questions

  • How do I access GPT-Realtime-1.5 through AI Gateway?

    Realtime support is in beta through AI SDK 7. Mint a short-lived token on your server with the AI SDK's gateway provider, then connect from the browser with the AI SDK's realtime hook over WebSocket. The hook manages microphone capture and audio playback.

  • What does speech-to-speech mean for GPT-Realtime-1.5?

    One model handles the full loop: GPT-Realtime-1.5 takes audio in and produces audio out, with no separate transcription and text-to-speech steps. That reduces latency and keeps intonation and conversational cues intact.

  • Can GPT-Realtime-1.5 call tools during a live conversation?

    Yes. Tool calling works mid-conversation, so a voice agent can look up an order or query a system while the caller is still talking, then respond with the result.

  • How does GPT-Realtime-1.5 compare to gpt-realtime-2?

    GPT-Realtime-1.5 is the flagship for standard voice agents and customer support. GPT Realtime 2 is the more capable successor, adding configurable reasoning effort for conversations that involve multi-step problem solving.

  • How is GPT-Realtime-1.5 priced?

    Pricing is listed on this page. Rates reflect the providers routing through AI Gateway and update when providers change list prices.

  • Does GPT-Realtime-1.5 support zero data retention through AI Gateway?

    Zero Data Retention is not currently available for this model. Zero Data Retention is offered on a per-provider basis. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.

  • What are typical latency characteristics?

    This page shows live performance metrics measured across real AI Gateway traffic.