Authoritas

Authoritas is a comprehensive SEO platform that offers a wide range of tools, including keyword research, content optimization, and competitor analysis. It explicitly mentions features like 'Question Explorer' which mines 'People Also Ask' results, 'unlimited multi-lingual keyword research tool' and the ability to 'Query any domain in >50 major international countries' for location-based filtering. The platform also highlights 'AI-powered content assistant' for content creation and 'Automate your multilingual content strategy data gathering by analysing and clustering millions of keywords' which implies keyword clustering. Their pricing page clearly outlines different tiers (Starter, Team, Enterprise) with transparent pricing and the Enterprise plan includes 'Senior Account Managers'.