One short brief a week: a hook formula that worked, a caption pattern that flopped, and the numbers behind both.
Get the weekly caption briefFirst-line patterns tested on real accounts, with save and share rates instead of vibes.
Same reel, two captions. We publish which one won and why it makes sense.
Short takes on caption and scheduling tools worth paying for, and the ones that are not.
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Latest
The five-hashtag cap is official. Caption keywords, DM shares, and 150-word posts are the new reach drivers. What the data shows and how to adapt. Read the brief →
Adam Mosseri on this week's Lenny's Podcast: labels not bans for AI content, and why the person behind the caption is the asset. What it means for your hooks. Read the brief →
No. GramMachine is an editorial brief. We test caption and hook patterns and publish what we learn. Nothing is automated on your account.
From small tests on creator accounts we work with, and from public engagement data we collect by hand.
AI helps draft variants; humans pick, post, and measure. The brief reports what actually performed.
Weekly by email. Selected briefs get archived on the site later.