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Behavior Score, explained: the two numbers deciding who you play with
Behavior Score judges how you play, Communication Score judges how you talk, and both quietly decide the quality of every lobby you get.
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Behavior Score judges how you play, Communication Score judges how you talk, and both quietly decide the quality of every lobby you get.
Dota 2 tracks two separate scores, not one: Behavior Score grades how you play (reports, abandons, griefing, commends), and Communication Score grades how you talk (chat and voice, checked in real time and able to mute you mid-match). Neither touches your MMR — they decide the quality of teammates and opponents the matchmaker hands you, and how fast it hands them to you.
Behavior Score reflects your conduct across recent matches: reports against you, commendations from teammates, abandons, intentional feeding or griefing, and cheating reports all feed into it. It's the score that gates access to things like ranked matchmaking, pausing, and post-game item drops — fall low enough and those start disappearing before your queue times even get bad.
Communication Score is narrower and reacts faster. It's the newer of the two, added in Valve's Summer 2023 update specifically to track the quality of in-game chat and voice. When a player reports someone through the in-game scoreboard, that match's chat log gets analyzed in near real time; if it's judged toxic, the offender is muted — text and voice — for the rest of that game, no warning shot. Keep racking up reports across matches and a low Communication Score starts restricting communication tools even before a match starts: pings, ally tips, and coaching go first, full mute-with-cooldown comes after.
Both live in your Dota 2 profile under the Player Behavior Summary (the panel used to be called Conduct Summary, same place). It shows your current Behavior Score and Communication Score, not just a pass/fail — check it there rather than guessing from queue times alone, since a slow queue can also just mean off-peak hours or an unusual hero pick pool at your bracket.
A single report from a tilted teammate arguing about an item build isn't what tanks a score — Valve has said the system looks at patterns, not isolated complaints. It's the accumulation, and the abandons in particular, that move the needle.
Commendations from teammates help, and simply finishing games clean — no reports, no abandons — is what rebuilds the score over time. Both scores update in batches rather than after every single match: Valve's own summary is sent to players roughly every 15 games, so a single spotless match won't visibly move the number, and a single bad one usually won't tank it either unless it's part of a run. Recovering from a real dip takes a stretch of consistently clean games, not a lucky evening — there's no shortcut Valve has published, and claims of exact point values per game aren't confirmed by Valve itself, so treat any specific "+X per win" number you see elsewhere with suspicion.
It's easy to conflate these, but they're different layers. Low Priority is an acute, short-term penalty: leave games or rack up enough reports in a short window and you're forced through a set of Low Priority matches before returning to normal queues. Behavior Score is the long-running reputation number sitting underneath it. You can have a mediocre Behavior Score without ever touching Low Priority, and you can serve out a Low Priority sentence and still have a depressed Behavior Score afterward — clearing the queue penalty doesn't instantly restore the underlying reputation. Falling far enough on Behavior Score also gates ranked matchmaking outright, separately from whatever Low Priority status you do or don't have.
The practical takeaway is unglamorous: play matches out, don't feed a report war over chat, and let clean games do the slow work — that's the only mechanism Valve has actually confirmed.