According to Paolo Ardoino, Bitfinex has introduced zero trading fees, as announced on X with an official Bitfinex link for details, source: X post https://twitter.com/paoloardoino/status/2001320010279514422 and official link https://t.co/vFMOM4iSjz. The post text does not specify scope, eligible markets, or time frame, so traders should verify these terms on the linked official page before executing fee-sensitive strategies, source: X post https://twitter.com/paoloardoino/status/2001320010279514422 and official link https://t.co/vFMOM4iSjz.