RealRelay.ai
OpenAI

gpt-4-turbo

The latest GPT-4 Turbo model with vision capabilities. Vision requests can now use JSON mode and function calling. Training data: up to December 2023.

Starting at
Input
$10.00/ 1M
Output
$30.00/ 1M
Open dashboard

Channel

Each channel is compared at its lowest input-price tier; output breaks ties. A dash means /api/pricing does not provide that rate. Selecting a channel updates the endpoints and call example below.

openai/gpt-4-turbo
Input
$10.00 USD per 1M tokens
Output
$30.00 USD per 1M tokens
Cache read
- USD per 1M tokens
Cache write
- USD per 1M tokens

Endpoints

POST/v1/chat/completionsChat Completions

Call it

Using openai/gpt-4-turbo

1from openai import OpenAI23client = OpenAI(4    base_url="https://www.realrelay.ai/v1",5    api_key="sk-***",6)78response = client.chat.completions.create(9    model="openai/gpt-4-turbo",10    messages=[{"role": "user", "content": "Hello"}],11)1213print(response.choices[0].message.content)
1import OpenAI from "openai";23const client = new OpenAI({4  baseURL: "https://www.realrelay.ai/v1",5  apiKey: process.env.REALRELAY_API_KEY,6});78const response = await client.chat.completions.create({9  model: "openai/gpt-4-turbo",10  messages: [{ role: "user", content: "Hello" }],11});1213console.log(response.choices[0].message.content);
1curl https://www.realrelay.ai/v1/chat/completions \2  -H "Authorization: Bearer $REALRELAY_API_KEY" \3  -H "Content-Type: application/json" \4  -d '{5    "model": "openai/gpt-4-turbo",6    "messages": [{ "role": "user", "content": "Hello" }]7  }'

Prices and availability as published on Oct 19, 2026.

Capabilities

Tool useVision
Input
TextImage
Output
Text

Frequently asked questions

What is gpt-4-turbo?
gpt-4-turbo is a model from OpenAI. RealRelay.ai serves it through one OpenAI-compatible API.
How much does gpt-4-turbo cost?
gpt-4-turbo costs from $10.00 per 1M input tokens and $30.00 per 1M output tokens.
What inputs and outputs does gpt-4-turbo support?
Input: Text and Image. Output: Text.
What is the context window of gpt-4-turbo?
gpt-4-turbo has a context window of 128K tokens. It returns up to 4K output tokens.
What can gpt-4-turbo do?
Listed capabilities: Tool use and Vision.
How do I call gpt-4-turbo through the API?
Use the model ID openai/gpt-4-turbo with a RealRelay.ai API key on the OpenAI-compatible API.

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