How do I add PlumiBot to my group?
Tap “Add on LINE” anywhere on this site to add the bot as a friend, then invite it into any group like you would any LINE friend. It also works one-on-one in a DM.
Does it work in a DM, or only in groups?
Both. In a group it translates into every language the group has set up; one-on-one in a DM it translates into that chat's own language list. Add or change a chat's languages with !lang add <code>.
Do I need to register?
Just a quick one-time setup in DM — it confirms your language and the name you'd like to go by, then you're done. Prefer to skip it? Type !skip anytime.
Is PlumiBot free?
Yes — the Free tier translates 300 chat messages a month at no cost, and games, digest and stats come with it. Voice notes, photos and shared links are paid features. Paid plans start at NT$100 ($3.16)/month for 10,000 messages, with pay-as-you-go credits as an option.
How many languages does it support?
126 — from English, Chinese (Simplified & Traditional), Japanese, Korean and Thai through to Kinyarwanda, Quechua and Meiteilon.
See every language →
How many languages can one chat run at the same time?
As many as you need. No plan caps it, the Free tier included — switch on Vietnamese, Indonesian and Thai and every message posted comes back in all three at once, in a single reply, with no pairing step and no second bot. The message goes to the model one time however many languages are on, so each one you add costs another translation in the reply rather than another whole request.
Does it add tone tags or translation notes?
No — you get the clean translation and nothing else, one tidy block per language. Behind the scenes it reads recent chat context to settle short or ambiguous messages, but it never clutters the reply with commentary.
Can it handle voice notes and images?
Send a LINE voice note for transcription + translation (long clips are summarized), or a photo of a menu, sign or document for clean OCR. Text-free photos are silently ignored. Both are paid features — on the Free tier the bot says so instead of reading them.
Do voice notes and images use more tokens?
Yes — noticeably. A voice note costs roughly half again as much as text and a photo about four times as much, because transcription and OCR run before the translation does. The
pricing section has rule-of-thumb estimates.
What about really long messages?
Messages over 500 characters are summarized before translating, so the group doesn't get buried under a wall of text.
What's a token, and what if I run out?
Tokens are how AI measures text — a short message is ~50, a normal one ~350. If you hit your monthly quota, translation pauses until the 1st; upgrade or switch to pay-as-you-go anytime.
Do unused tokens roll over?
Monthly plans reset on the 1st, so they don't roll over. Pay-as-you-go credits never expire, though.
What games can I play?
Word Chain (chain words by their last letter) and Translation Duel (fastest correct translation wins, best of five), each with a group leaderboard. Messages are broadcast in every group language so mixed-language groups can play fairly, and winners pick up bonus translation tokens.
Can I move my Group Pro plan to another group?
Yes. Run !groupid in the new group to get its ID, then transfer the plan from your dashboard.
Is my data secure?
A chat holds only its most recent 200 messages — group chats and DMs alike — and each new message pushes out the oldest. A daily sweep then deletes anything that has turned 7 days old, which is also as far as !digest can reach. Beyond that we hold on to a message for one reason: if a translation trips our automatic quality check, it's kept so a human can see what went wrong and fix it. Ones that pass are deleted as soon as they're checked. Everything sits in encrypted databases with row-level security.
How do I get help?
PlumiBot