Suzy has three plans: Starter (SMS only, up to about 40 rooms), Pro (SMS + Voice, up to about 100 rooms), and Enterprise (100+ rooms or multi-property groups, sales-assisted). AAHOA members get 20% off any plan.
Current pricing is always shown at suzyai.net/pricing - that page is the source of truth, not this article, since prices can change.
To change plans, go to Dashboard > Settings and use the billing portal link, or reply to any billing email and ask.