Gemini is a cryptocurrency exchange that allows users to buy, sell, and store over 120 different cryptocurrencies. The platform is regulated by the New York State Department of Financial Services and is available in all 50 states in the US and over 60 countries worldwide. It was designed with a focus on security and compliance and offers a range of features to both beginner and advanced traders, including an intuitive user interface, educational content for new users, and strong protection for customer accounts. It also offers insurance coverage against certain types of losses.

The exchange was founded by Tyler and Cameron Winklevoss, identical twins and former Olympic rowers who are also the founders of Winklevoss Capital Management. The company was announced in early 2014 and went live in October 2015.

Gemini is available in over 60 countries, including the US, UK, Canada, Australia, Hong Kong, Singapore, and South Korea. It supports a range of cryptocurrencies, including Bitcoin, Ethereum, and stablecoins like GUSD, DAI, and USDC. The platform charges fees for various products and services, including API, mobile, app, custody fees, as well as trading fees for its Active Trader product. These fees are based on a maker-taker model and vary depending on the user's 30-day trading volume. Stablecoin pairs have slightly lower maker and taker fees.

Gemini does not currently offer leverage or margin trading.