compare
Reddit Promoted Post vs X Promoted Post
Reddit titles run up to 300 chars (70 visible). X bodies cap at 280 chars total. Reddit's headline carries more, X's body carries the offer.
Reddit Promoted Posts and X Promoted Posts are both feed-stage interruption formats with audiences that skew media-savvy and ad-resistant. They handle text differently in ways that matter for cross-platform creative.
Reddit titles allow 300 chars (~70 visible on mobile feed). X bodies cap at 280 chars total. Reddit's title carries the entire feed-stage hook. X's body works as the full post — title concept doesn't really exist on X. The bottom card on link-attached X posts adds a 50-char visible headline; Reddit doesn't have an equivalent card-headline.
Audience tone matters too. Reddit users actively downvote tone-deaf ads and surface them in r/AssholeDesign — that's free organic reach if the ad is good. X users mute or block. Reddit demands subreddit-tone matching; X demands brevity.
Reddit titles: 70 visible
X bodies cap at 280. Reddit titles at 300, but only 70 show in feed.
Side-by-side specs
| Field | Hard max | Visible before truncate | Warn at |
|---|---|---|---|
| Post title | 300 | 70 | 60 |
| Body / link card text | 500 | 100 | 80 |
Source: https://business.reddithelp.com/helpcenter/s/article/promoted-posts · Last verified 2026-04-15.
| Field | Hard max | Visible before truncate | Warn at |
|---|---|---|---|
| Post text | 280 | 280 | 250 |
| Card headline | 70 | 50 | 40 |
Source: https://business.x.com/en/help/campaign-setup/campaign-management/promoted-tweets · Last verified 2026-04-15.
FAQ
- Which has lower CPM?
- Reddit typically pulls $1-3 CPMs. X pulls $4-8. Reddit is materially cheaper per impression.
- Which has higher engagement rate?
- Reddit Promoted Posts in subreddit-tone-matched copy can pull 2-3x X's engagement rate. Off-tone Reddit ads pull half X's rate.
- Are URLs counted differently?
- Reddit shows URLs literally and counts every character. X counts URLs as 23 characters via t.co regardless of length.