BYOK, explained: why 'bring your own key' matters for AI tools

Most AI-powered SaaS tools route your usage through their own API accounts, then charge you a per-seat or per-credit price that bakes in a markup over the underlying model cost — often a significant one, since model usage is usually the biggest line item in their own COGS.

BYOK — Bring Your Own Key — flips that. You connect your own OpenAI, Anthropic, Google or Perplexity credentials, and the tool's server talks to the model provider directly using your account. The vendor never sees your usage bill and can't mark it up, because they're not the one paying it.

The trade-off is that you're responsible for keeping keys funded and secure — which is why encryption at rest and a clear 'we never log your keys' policy matters more, not less, in a BYOK product.

For anything that runs frequent model calls — like daily AI-visibility tracking across four engines — the savings compound fast. A markup that looks small per-call adds up over a year of daily runs.