Developers do not need another “best AI API provider” list.

Most lists collapse into the same problem: a few affiliate links, some vague pricing claims, and no clear way to verify whether a provider actually supports the model, Base URL pattern, payment method, or billing behavior a real project needs.

So I built a more boring thing: an AI API directory.

Not a leaderboard.

Not a recommendation engine.

A structured directory of observed facts.

The idea is simple: before wiring a third-party AI API provider into Codex, Cursor, Claude Code, or your own app, you should be able to compare a few concrete fields:

supported providers and models

OpenAI-compatible or Anthropic-compatible API behavior

custom Base URL support

pricing notes

payment methods

invoice support

referral or recharge rules

public verification sources

traffic and domain signals when available

The important shift is this:

“Compatible with OpenAI” describes an API shape.…