Using SuperSearch is free and viewing results from many data collections is also free (for example: Find a Grave and Social Security Index Collections, etc.).
Viewing other records requires a data subscription. Data subscriptions also provide unlimited access to all Record Matches, including the ability to confirm or reject matches.
PremiumPlus family site subscribers have the special privilege of searching and viewing one billion family tree profiles on SuperSearch for free. Other types of records may still require a data subscription.