GPT Realtime 1.5

by OpenAI

GPT Realtime 1.5 is OpenAI's flagship realtime voice model, built for voice agents and customer support that need reliable instruction following and consistent persona. It accepts text, audio, and image inputs and produces text and audio outputs. The model operates with a 32,000 token context window and up to 4,096 output tokens, and supports function calling for agentic workflows. Vision input lets it ground conversations in visual context, making it strong for audio-in, audio-out interactions that also reference images.

Key info

Input
Output
Features
Context window
β€”
Max output
β€”
Input price
$4.00 /1M
Output price
$16.00 /1M
  • US residency available
  • Zero data retention via Enterprise
  • No training by default
  • GDPR DPA available

Available routes

GPT Realtime 1.5 runs on 1 route through the Opper gateway. Compare residency, ZDR, and training posture at a glance β€” full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutput
OpenAIUSEnterpriseNo$4.00$16.00

Training posture across routes: No training on prompts by default.

Data handling per route

Each route hosting GPT Realtime 1.5 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

OpenAI β€” United StatesπŸ‡ΊπŸ‡Έ

Zero data retention is available via Opper Enterprise contract. No training on customer data. US; SCCs; DPA available.

Zero data retention
Available via Opper Enterprise contract.
Training
No training on customer data.
Logging
Abuse monitoring (30-day retention)
Third-party access
None disclosed
GDPR DPA
DPA available
Transfer mechanism
SCCs

Get started

Call GPT Realtime 1.5 through the Opper gateway with one API key. Let your coding agent set it up, or call it directly β€” Opper is drop-in compatible with the OpenAI, Anthropic, and Google AI SDKs.

Set it up with your agent

Copy this and paste it into your coding agent β€” Claude Code, Cursor, Codex, and more β€” and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "openai/gpt-realtime-1.5",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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GPT Realtime 1.5 by OpenAI β€” pricing, benchmarks | Opper AI