The fastest way to cut your model bill is also the smallest code change you will make this quarter: point your existing OpenAI client at Apifuse and leave everything else exactly as it is.

One line, no rewrite

Every Apifuse text endpoint mirrors the OpenAI request and response schema. The only thing that changes is the base URL — your prompts, streaming logic and parsing all keep working.

from openai import OpenAI

client = OpenAI(
    api_key="<apifuse-token>",
    base_url="https://api.apifuse.net/v1",
)

resp = client.chat.completions.create(
    model="gpt-5",
    messages=[{"role": "user", "content": "Hello"}],
)

What you get for free

  • The same request and response shapes you already depend on.
  • One API key across GPT, Claude, Gemini and 500+ other models.
  • Pricing up to 70% below official, billed only on successful calls.
  • One invoice instead of a folder full of provider statements.

Swap the base URL in staging, run your existing test suite, and promote to production when it stays green. Most teams are done before lunch.