Chat GPT 4o audio preview API

openai/gpt-audio
GPT Audio is OpenAI's latest flagship model capable of understanding and generating text and audio in real-time, designed for natural conversation and auditory tasks.
Context
128K tokens
Input
$3.25 / 1M tokens
Output
$13 / 1M tokens
Released
Nov 11, 2025

How to use Chat GPT 4o audio preview API

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

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "openai/gpt-audio",
      "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-audio",
    "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-audio","messages":[{"role":"user","content":"Hello!"}]}'

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

Chat GPT 4o audio preview API Pricing

TypePrice
Input
$3.25 / 1M tokens
Output
$13 / 1M tokens

Chat GPT 4o audio preview vs other models

ModelInputOutputContextBest for
$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

Chat GPT 4o audio preview has a 128,000 tokens context window.

Chat GPT 4o audio preview takes audio, text as input and returns audio, text.

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

Chat GPT 4o audio preview became available on November 11, 2025.

Chat GPT 4o audio preview is priced at input $3.25 / 1M tokens, output $13 / 1M tokens.

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

Chat GPT 4o audio preview was built by OpenAI.

Yes. It supports function calling and parallel tool calls as part of its feature set.

Yes, file input is listed as a supported feature for this model.

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