Source-backed directory

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A neutral starting point for choosing an AI API. We document what can be verified and leave the rest marked as unknown.

36 providers · reviewed with official sources

What “markup” means here.
A markup compares a resale price with a defined upstream base price using the same model, billing unit, and conditions. These cannot always be established consistently, so we do not publish a universal percentage. “Official” refers to first-party model providers or inference platforms, not an endorsement.