AI Rate Card

OpenAI: GPT-4o · fastrouter

GPT-4o (o for omni) is OpenAI's multimodal flagship model combining advanced language processing with sophisticated visual understanding. Released in 2024, this versatile solution processes both text and image inputs to generate high-quality text outputs across diverse applications. While maintaining the same intelligence level as GPT-4 Turbo, it delivers twice the processing speed and 50% greater cost efficiency. The model features significantly enhanced multilingual capabilities and improved visual analysis functions, making it particularly valuable for global applications requiring both text and image processing. As the foundation for OpenAI's consumer and enterprise offerings, GPT-4o provides a balanced combination of quality, speed, and affordability that makes advanced AI capabilities more accessible for diverse use cases.

Base modelAll models on this baseAll models of the providerto the provider

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Input, $/1M $2.50

Output, $/1M $10.00

Cache read $1.25

Cache write —

Context 128 000

Max output 16 384

Accepts files, images, text

Last checked 04.11.2026 12:00:14 UTC

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API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL
https://go.fastrouter.ai/api/v1
Endpoint
https://go.fastrouter.ai/api/v1/chat/completions
Model id
openai/gpt-4o
curl
curl https://go.fastrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-4o", "messages": [{"role": "user", "content": "Hello!"}], "max_tokens": 256}'
Python
import requests

r = requests.post(
    "https://go.fastrouter.ai/api/v1/chat/completions",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "openai/gpt-4o",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ],
      "max_tokens": 256
    },
)
print(r.json())
JavaScript
const r = await fetch("https://go.fastrouter.ai/api/v1/chat/completions", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "openai/gpt-4o",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ],
    "max_tokens": 256
  }),
});
console.log(await r.json());
Request (JSON)
{
  "model": "openai/gpt-4o",
  "messages": [
    {
      "role": "user",
      "content": "Hello!"
    }
  ],
  "max_tokens": 256
}
Response (JSON)
{
  "id": "chatcmpl-...",
  "object": "chat.completion",
  "model": "openai/gpt-4o",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "Hi! How can I help?"
      },
      "finish_reason": "stop"
    }
  ],
  "usage": {
    "prompt_tokens": 9,
    "completion_tokens": 12,
    "total_tokens": 21
  }
}

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Afastrouter%7Copenai/gpt-4o, prices checked 2026-11-04; seller's page: https://fastrouter.ai/models/openai/gpt-4o

Technical details

ID: offer:fastrouter|openai/gpt-4o