Bedrock Pricing Does Not Match OpenAI Direct

The mistake

Budgeting an Amazon Bedrock deployment of an OpenAI model using the per-token prices published on OpenAI's own pricing page, on the assumption that the model's price travels with it regardless of which platform is actually serving the request.

Why this happens

It's a reasonable mental model — the model is "the same model," so it feels like it should cost the same wherever it's called from. OpenAI's own pricing documentation states plainly that models available through Bedrock are billed through AWS and may differ from direct OpenAI pricing, which is easy to skim past if you're reading the pricing page specifically for the per-token numbers rather than the platform-availability notes surrounding them.

Why it matters

A cost model built on OpenAI-direct numbers for a Bedrock deployment is pricing the wrong bill. AWS's own billing for these models is a separate, independently-set structure, and this site — which sources every figure directly from OpenAI's own published pages — has no basis to publish or estimate what that AWS-side number actually is. Treating the OpenAI-direct rate as a stand-in for it isn't a rounding error; it's pricing against a number that was never the one that was going to appear on the invoice.

The fix

For any Bedrock deployment, get the actual rate from AWS's own billing and pricing documentation for that model, rather than from OpenAI's pricing page. Use OpenAI's direct pricing as a baseline for comparison — is Bedrock's rate close, meaningfully higher, meaningfully lower — but never as the number you budget against for a Bedrock bill specifically.

The same caution applies in the other direction, too — don't assume a favorable Bedrock rate you've seen quoted somewhere translates back to what OpenAI charges directly, if a project ever considers moving the other way. Each platform's pricing needs to be sourced from that platform, every time, rather than inferred from the other, and that's true again for any third platform a workload might later move to as well.

See also

Where Each Model Is Actually Available notes platform-by-platform pricing divergence more generally — Bedrock is one instance of a pattern that also applies, differently, to other hosting platforms.