Autopilot supports Group (legacy), Professional, Enterprise, Unlimited, Developer and Performance Salesforce editions.
Because Autopilot is a Salesforce AppExchange Program Partner, you do not need to have API access to connect to Salesforce.
Does Autopilot integrate with SalesforceIQ?
While it contains the Salesforce name, SalesforceIQ is a different product to Salesforce. It is not covered by our native integration with Salesforce. However, the good news is that you can still use Autopilot with SalesforceIQ via our Zapier integration. For example, here is a Zap that creates SalesforceIQ relationships from Autopilot contacts.