What the score represents
The 0 to 100 score is an estimated probability that the tweet graduates into expanded For You distribution beyond your existing follower graph. Tweets scoring above 75 reliably expand. Tweets scoring 55 to 75 expand inconsistently based on the next hour of engagement. Tweets below 35 rarely expand regardless of further engagement accumulation.
How the composite works
Per the 2026 For You model: bookmarks weighted at 2.5x, retweets at 2.0x, replies at 1.6x, likes at 1.0x. The composite is the weighted sum. Per impression normalization is the composite divided by impressions. Thread and video tweets get a format multiplier of 1.15 and 1.25 respectively because dwell time is higher on those formats.
The freshness multiplier
Tweets carry a freshness decay that reduces ranking value from 100 percent at post time to roughly 30 percent at 24 hours to 15 percent at 48 hours. After 48 hours, the tweet is effectively out of For You candidate pool. This is why the first hour of a tweet matters so much: the score the tweet accumulates in the first 60 minutes largely determines distribution for the next 24 to 48 hours.
Can I use this on someone else is tweet?
Yes. You need the public metrics which are visible on the tweet itself. This is also how we evaluate whether a tweet from a competitor or adjacent account is likely to expand into wider distribution, which helps with reply strategy timing.
