After launching for a small group of users last year, the ability to record a Twitter Spaces session is now available to iOS and Android users. Twitter Spaces hosts on mobile will now see the Record Space button in the app. This update allows Twitter users to listen to these recordings after the live session. You can't record on the website version yet, though.
The recordings will stay up for 30 days after they've been published. After that, these recorded Spaces will be deleted. Hosts also get the option to delete these recordings anytime before the 30 days are up.