How to Draft and Repurpose Posts with Buffer's AI Assistant

Buffer's AI Assistant lives inside the post composer and is built for two jobs: writing a first draft from a prompt, and reshaping one post into versions tuned for each platform. This guide takes a single idea and turns it into a YouTube description, an Instagram caption, and a punchier TikTok caption.

What you need

• A Buffer account with the AI Assistant enabled
• YouTube, Instagram and TikTok connected as channels
• A one-line idea for the post

Step 1: Open the composer and start the assistant

Click Create Post, then click the AI Assistant button below the text area. A prompt box opens with quick actions for generating, rephrasing, and changing length or tone.

Step 2: Generate the base draft

Enter a clear prompt that names the topic and the goal, then click Generate. The assistant produces a draft in the composer. This is your base version; you will adapt it per platform next.

Step 3: Repurpose for each channel

Select all three channels at the top so each gets its own tab. Open the TikTok tab, highlight the caption, and use Shorten for a tighter hook. Open the YouTube tab and use Expand to add a fuller description with a call to subscribe. Instagram usually sits in the middle.

Step 4: Add to queue

Once each tab reads the way you want, add the post to the queue. Buffer schedules all three versions into each channel's next available slot, so you wrote one idea and shipped three native-feeling posts.

Result

From a single line of intent you now have a longer YouTube description, a balanced Instagram caption, and a short TikTok hook, all queued at the right times without copy-pasting between apps.