X / Twitter Character Limits 2026: The Tweet, the Bio, and Premium's 25,000

The headline number on X is still 280 characters per tweet for free users, 25,000 for X Premium subscribers. But that's only one of nine character caps that matter, and most creators trip over the bio (160) or display name (50) caps. Here's the full set.

Quick Answer: Every X / Twitter Character Limit (2026)

| Field | Free | Premium / Verified | | :--- | :--- | :--- | | Tweet (post) | 280 chars | 25,000 chars | | Reply | 280 chars | 25,000 chars | | Bio | 160 chars | 160 chars | | Display Name | 50 chars | 50 chars | | Username (handle) | 15 chars | 15 chars | | DM (single message) | 10,000 chars | 10,000 chars | | Spaces title | 70 chars | 70 chars | | Community description | 2,000 chars | 2,000 chars | | Long-form article | n/a | 100,000 chars |

URLs in tweets always count as 23 characters regardless of actual length — t.co wrapping makes them all uniform. This matters: a long URL doesn't eat extra bytes, but it does cost the same 23 characters as a short one.

The Real Truth About Premium's 25,000

X Premium gives you 25,000 characters per post. The catch: only the first 280 characters show in the feed before the "Show more" button. Tweets longer than 280 chars get visually compressed in everyone's timeline — they look the same as a regular tweet until tapped.

So Premium's value isn't "longer tweets" — it's "thread-killer tweets." Instead of a 12-tweet thread, write one long-form post. The first 280 chars carry the hook; the remaining 24,720 carry the substance for people who tap.