← Feature Flag Pricing Calculator
Put your monthly flag requests (in thousands) and growth rate into the calculator to price PostHog, Flagsmith and ConfigCat side by side. These are the questions to settle before you trust the answer.
Some vendors bill per request after a free allowance (PostHog), others sell flat plans with a pool of included requests (Flagsmith, ConfigCat), and others bill per seat or per monthly active user. At high request volumes the cheapest and most expensive list prices in the calculator differ by thousands of dollars a month.
Requests you do not make. Caching flag values in the SDK, evaluating server-side once per session instead of per call, raising client polling intervals and using local evaluation usually cut request counts far more than switching vendor. Also check seat caps, environment limits and whether experimentation is billed separately.
When the 12-month spend under your growth rate differs enough to pay for the migration, which means swapping SDKs, re-creating flags and targeting rules and retraining the team. Run the calculator with your growth rate before deciding, and remember seats and add-ons can change the real figure.