Function invocations now billed per unit

Function invocations are moving from package-based to per-unit pricing for Pro and new Enterprise customers. Starting with your next billing cycle, you'll be billed per unit at $0.0000006 per invocation (previously $0.60 per 1M invocations) for Pro customers. Per-unit billing scales more smoothly across team sizes and usage patterns and helps teams on Pro use function invocations without immediately consuming a large portion of the included monthly usage credit.