🆓 Free AI API
No signup. No key. No catch.

OpenAI-compatible. Chat with GPT-5, Claude, Gemini, Grok & DeepSeek. Generate images with GPT Image, DALL-E & Grok. Drop-in replacement for any OpenAI SDK.

Try it now → View API docs

🎮 Playground

💬 Chat

Response will appear here…

🎨 Image

Image will appear here…

🤖 Available models

gpt-5-nanoOpenAI · reasoning
claude-sonnet-4-5Anthropic
gemini-2.5-flash-liteGoogle · fastest
grok-4-1-fastxAI
deepseek-chatDeepSeek
gpt-image-1-miniOpenAI · images
gpt-image-1OpenAI · images
gpt-image-1.5OpenAI · images
gpt-image-2OpenAI · images · best
dall-e-3OpenAI · images
nano-bananaGemini 2.5 Flash · images
nano-banana-proGemini 3 Pro · images
grok-2-imagexAI · images

💻 Use from your code

cURL

# Chat completion
curl -X POST https://fai-api.masud.app/v1/chat/completions \
  -H "Content-Type: application/json" \
  -d '{"model":"claude-sonnet-4-5","messages":[{"role":"user","content":"Hello!"}]}'

# Image generation
curl -X POST https://fai-api.masud.app/v1/images/generations \
  -H "Content-Type: application/json" \
  -d '{"prompt":"A red apple","model":"gpt-image-1-mini","size":"1024x1024"}' \
  | jq -r .data[0].b64_json | base64 -d > apple.png

OpenAI Python SDK

from openai import OpenAI

client = OpenAI(
    base_url="https://fai-api.masud.app/v1",
    api_key="not-needed",  # auth is optional & open
)

# Chat
resp = client.chat.completions.create(
    model="claude-sonnet-4-5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

# Image
img = client.images.generate(
    model="gpt-image-1-mini",
    prompt="A red apple on a table",
    size="1024x1024",
)
print(img.data[0].b64_json[:80] + "...")

OpenAI Node SDK

import OpenAI from 'openai';

const client = new OpenAI({
  baseURL: 'https://fai-api.masud.app/v1',
  apiKey: 'not-needed',
});

const resp = await client.chat.completions.create({
  model: 'gpt-5-nano',
  messages: [{ role: 'user', content: 'Hello!' }],
});
console.log(resp.choices[0].message.content);