{"currency":"USD","free_tier":{"requests_per_minute":1,"api_key_required":false,"cost":0,"note":"One request per minute, forever, no signup."},"plans":[{"id":"pro","label":"Pro (metered)","requests_per_minute":60,"free_calls_per_minute":1,"price_per_billable_call_usd":0.004},{"id":"enterprise","label":"Enterprise","requests_per_minute":600,"free_calls_per_minute":1,"price_per_billable_call_usd":0.002}],"billing_rule":"One call per rolling 60-second window is always free. Every call beyond that in the same window is billable at the plan rate."}