OpenAI: GPT-Realtime-2.1

Name: GPT-Realtime-2.1 API
Brand: Openai

stable

GPT-Realtime-2.1 is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

gpt-realtime-2.1gptreleased Jul 6, 2026

Provider Quick start

Context

128K

tokens

Max output

32K

tokens

Input

$4.00

per 1M

Output

$24.00

per 1M

Activity

Daily period usage

Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M

OpenAI

128K$4.00$24.00

Pricing

Item	Price	Unit
Input	$4.00	per 1M tokens
Output	$24.00	per 1M tokens
Cache read	$0.40	per 1M tokens

Performance

Reliability

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Capabilities

Modalities

Input

Output

Details

Model ID: gpt-realtime-2.1
Family: gpt
Status: stable
Knowledge: Sep 30, 2024
Released: Jul 6, 2026

Gateway Config

API: 2024-01-01
Auth: OPENAI_API_KEY
Discovery: static
Provider type: static

Quick Start

index.ts

import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@openai/gpt-realtime-2.1",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL

https://api.openai.com/v1

Chat completions

https://api.openai.com/v1/chat/completions

Model

gpt-realtime-2.1

Auth env

OPENAI_API_KEY

GPT-Realtime-2.1 FAQ

How much does the GPT-Realtime-2.1 API cost?

Through OpenAI, GPT-Realtime-2.1 costs $4.00 per 1M input tokens and $24.00 per 1M output tokens.

What is the context window of GPT-Realtime-2.1?

GPT-Realtime-2.1 accepts up to 128K tokens of context and returns up to 32K output tokens on OpenAI.

What can GPT-Realtime-2.1 do?

GPT-Realtime-2.1 supports chat, function calling, image input and reasoning. It accepts text, audio and image input.

How do I call GPT-Realtime-2.1 through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @openai/gpt-realtime-2.1. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.