GPT 4o API

openai/gpt-4o
GPT-4o integrates text, vision, and audio for multimodal AI applications.
Context
128K tokens
Input
$3.25 / 1M tokens
Output
$13 / 1M tokens
Released
May 13, 2024

How to use GPT 4o API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to openai/gpt-4o.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "openai/gpt-4o",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "openai/gpt-4o",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"openai/gpt-4o","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

GPT 4o API Pricing

TypePrice
Input
$3.25 / 1M tokens
Output
$13 / 1M tokens
Cached input
$1.625 / 1M tokens

GPT 4o Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
Intelligence
9
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Math
25.7
Composite score across standardised mathematics evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

GPT 4o vs other models

ModelInputOutputContextBest for
GPT 4o
This page
$3.25 / 1M tokens
$13 / 1M tokens
128K tokens
Coding + agents
$6.5 / 1M tokens
$39 / 1M tokens
1.05M tokens
Reasoning + agents
$2.6 / 1M tokens
$13 / 1M tokens
1M tokens
Balanced coding + agents
$3.9 / 1M tokens
$19.5 / 1M tokens
1M tokens
Long-context, multimodal & agentic workflows
$0.65 / 1M tokens
$3.9 / 1M tokens
1.05M tokens
Reasoning + agents

Frequently asked questions

GPT 4o has a 128,000 tokens context window and can return up to 16,384 tokens.

GPT 4o takes image, text as input and returns text.

Use openai/gpt-4o as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

GPT 4o became available on May 13, 2024.

GPT 4o is priced at input $3.25 / 1M tokens, output $13 / 1M tokens, cached input $1.625 / 1M tokens.

Yes, GPT 4o can stream responses as they are generated.

Yes, GPT 4o accepts image input alongside text.

GPT 4o was built by OpenAI.

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