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One OpenAI-compatible endpoint. Start free, earn bonus requests when you need more.

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  • Free API key instantly — no credit card
  • GPT-5.5, Claude Opus, Alloy & more frontier models
  • OpenAI-compatible — change one line of code
  • Rate windows with bonus top-ups

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Available Models

GPT-5.5 new
Claude Opus 4.8
Claude Opus 4.7
Claude Opus 4.6
Alloy ensemble
Kimi K2.7 Code
# pip install openai
from openai import OpenAI

client = OpenAI(
  base_url="https://api.atlasbrain.cloud/v1",
  api_key="<your-key>"
)

response = client.chat.completions.create(
  model="gpt-5.5",
  messages=[{"role": "user", "content": "hello"}]
)