Is this cheating?
No. Prefire reads demos: the recordings of matches that are already over, which anyone in the match room can download. It's film study, done faster. It never runs during your match or shows you anything live.
Does it touch Counter-Strike 2?
No. It doesn't attach to the game, read its memory, draw over it or ask you to launch it any differently. It's a browser tab that reads demo files, which are recordings of matches that are already over.
Is the extension safe and allowed?
It only does what you could do yourself, on your own account, in FACEIT's own page. The stats are FACEIT's own numbers, read in your browser with your own sign-in, the way FACEIT's site reads them. Nothing touches the game. The automations are all off until you turn them on, and each has a line saying exactly what it will do in your name. They press only FACEIT's own button for the job, at a person's pace, never after you've acted and never past a captcha or an anti-bot check. Pause automations in the toolbar popup stops them all at once. FACEIT sets its own rules for automated tools, and they can change, so whether to turn one on is your call.
What data leaves my browser?
The stats, the automations and focus mode read FACEIT in your browser and send nothing anywhere. Only while you're signed in at prefireapp.com/web, Prefire's server is sent the match room you open, the player whose Study you press and the room's map, the demo you send from Watch demo, your blocklists and watch list (so the web app can show them), and your own last-30 summary. Nothing FACEIT says about other players is sent. Settings & privacy has the full list, and so does the privacy policy.
Why does Firefox ask about my data?
Firefox asks every new add-on to say what data can leave the browser, and shows it when you add one. For Prefire that's your Prefire sign-in, which match rooms you open, which Study buttons you press, the demo links you send, your blocklists and watch list, and your own matches' summary. That's all sent to Prefire's server only while you're signed in there (Settings & privacy has each one). Later, Firefox asks about notifications or the clipboard only if you tick the option that needs one: Show a browser notification for Accept matches, or Also copy when FACEIT's tab isn't focused for Copy server details.
Which demos does it read?
Any CS2 match demo, a .dem file, opens in the web app with its rounds to replay. A player study is built from FACEIT's: Prefire finds a player's last three matches on the map for you, and the extension sends their demos from the Watch demo button.
Why three matches, and not just the last one?
One match is one game plan against one team, and Prefire won't read habits from it. Three on the same map show what a player keeps doing, so a study waits until all three are read before it draws anything. When FACEIT only has one or two on the map, or one couldn't be read, the study says so on the page. Three is still a small sample: What a study can't tell you.
Does a study use up three of my daily demos?
Only for matches Prefire has never read. You can have 30 new demos read a day, and a study reads up to three; a match anyone has sent before, and every study you open again, doesn't count.
What does it cost?
The extension is free: its match room stats, its automations, the blocklist rotation, and your blocklists in the web app.
Studying a player's demos is Solo, by the month or by the year, and every account starts with 7 days free, once per account, with no card. Plans has the prices and how to pay.
Where do my demos go?
Prefire's server reads the demo once, deletes it straight away and keeps only the results, for up to 90 days after the demo was last opened. A demo the extension sends from FACEIT's Watch demo button isn't saved on your PC at all.
Will it slow my game down?
No. The demo is read on Prefire's servers, not on your PC, and nothing of Prefire runs inside the game. Close the tab before the match starts if you like: Study opens the study again.
Why isn't the flash they throw most at the top?
Each match's flashes are picked by what they earned per throw, not by how often they were thrown: a lineup thrown six times can add up to more blind seconds than one thrown once and still be the weaker flash. The picks of the three matches then go together, ordered by how long they blinded enemies. The one they used most is still marked Most used when it makes the top three. Top flashes has the whole rule.
What does "Forced 3 of 4 times his team was short" mean?
In four rounds across the study's matches, the player's team averaged under $3,500 at buy time, not counting pistol rounds, and in three of them he spent big anyway. Force buys says exactly what counts.
What does "Not enough rounds" mean?
The player has fewer than 6 rounds on that side in the study's matches, which is too few to give a role. Roles lists what each one takes.
Can I copy where a grenade was thrown from?
Yes. On a study's flashes and HEs, point at the ring where the player let go and copy the setpos line. Paste it into the console on an empty server and you stand where they stood, looking where they looked.
Something's broken. How do I tell you?
Report it from the web app: Support, then Report a bug, with screenshots if you have them. Prefire support answers there, under My support cases. Reporting a bug has the details.
Is there an app to install?
No. Prefire is the web app at prefireapp.com/web, which works in any modern browser on any computer, and the browser extension for Chrome, Edge, Brave and Firefox. There's no desktop app to download.