Who built this, why it exists, and how we keep the pricing data honest.
I've spent the last several years building and shipping products that use AI APIs as a core component — everything from internal tools to customer-facing features. In that time I've burned through a lot of API budget figuring out which models actually make sense for which workloads, and I've made plenty of expensive mistakes along the way.
AIModelCalc started as a personal spreadsheet I kept updating every time OpenAI, Anthropic, or Google changed their pricing. Eventually the spreadsheet got complex enough that I just built a proper tool instead. The goal was simple: one place to see what AI actually costs before you commit to building something on top of it.
I update pricing manually when providers make announcements and cross-check against official documentation. If you spot an error, I want to know — reach out via the contact page.
The first time I got a surprise AI API bill, it was for a feature I had assumed would cost roughly $200/month. The actual invoice was over $900. The difference came down to a model choice I hadn't thought carefully about — a newer, more capable model I'd left as the default, combined with longer-than-expected average outputs in production.
After that I started modeling AI costs more carefully before deploying anything. The problem was that the information was scattered everywhere: each provider had their own pricing page formatted differently, comparisons required manual spreadsheet work, and the numbers changed frequently enough that any static comparison article was outdated within weeks.
So I built a calculator that did the math automatically and kept the data in one place. It started as a private internal tool, and eventually I cleaned it up and made it public. That was early 2025. Since then I've added more models, more providers, and a growing set of guides based on questions I kept seeing come up in developer communities.
Every price in the calculator comes directly from the provider's official pricing documentation. We don't rely on third-party scrapes or automated feeds. When a provider updates their pricing, we update the calculator manually after verifying the new rates against the official page.
That said, AI pricing changes fast. New models launch, promotional pricing ends, enterprise tiers get reshuffled. We do our best to stay current, but there will always be a lag. Always verify current rates directly with the provider before making budget commitments based on our projections. Our estimates are for planning and comparison — not billing.
See our full pricing methodology for details on how we source and validate data, handle caching discounts, and flag uncertainty.
AIModelCalc currently tracks pricing across 7 providers and 18 models:
I add models when they reach meaningful production usage and have stable published pricing. I don't add every research preview or model that doesn't yet have clear API pricing.
The guides and articles published on AIModelCalc reflect my own experience and research, not content generated to fill pages. A few things I try to hold to:
See the full editorial policy for more detail on how content is written, reviewed, and updated.
Based on feedback I've gotten, the people who find this most useful tend to fall into a few groups:
If you're using it for something else and want to tell me about it, I'm genuinely curious — reach out through the contact page.
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