Instagram launched the Collab feature for co-authoring posts in 2021. It lets one account invite another as a co-author on a Feed post or Reel, so the content appears on both profiles under both usernames.
The feature was announced in October 2021 as a way for creators, artists, businesses, and other users to work together more visibly. A successful Collab shares engagement signals, including likes, comments, and views, rather than splitting the audience between separate duplicate uploads.
Collab is easy to confuse with tagging or mentioning someone. A tag identifies another account in content, but it does not normally place the post on that person’s profile or make them a joint author. Collab also differs from Instagram’s Remix tools, which are designed for responding to or reusing existing video content.
The feature arrived as Instagram was placing greater emphasis on Reels and creator partnerships. Availability initially depended on region and account rollout, but the launch year remains 2021.