A cozy companion for LINE

Every group chat,
fluent in 126 languages.

PlumiBot translates voice, images and text across 126 languages — without ever leaving LINE. It reads the room for context, keeps replies clean, and lets everyone just talk.

Free tier · No card to start · Works in any LINE group or DM
126
languages
V2
voice & image
LINE
native
NT$0
free to start
V2 capabilities

Everything your group needs

Translation, voice, images, karaoke and games — built from the ground up for mixed-language group chats.

Smart translation

Meaning, not just words

126 languages

Natural, contextual translation across every major world language — and a chat runs as many of them at once as it needs, with no cap on any plan.

Context-aware, clutter-free

It reads recent chat to settle short or ambiguous messages, then hands back just the clean translation — no tags or commentary.

Long-message summary

Long or forwarded messages get auto-summarized before translation — no walls of text.

Voice & image

It reads and listens, too

Voice → text

Send a LINE voice note and get an instant transcript plus translation; long clips are summarized.

Smart image OCR

Snap a menu, sign or document for a clean translation. Text-free photos — selfies, food, scenery — are silently ignored.

Karaoke

Sing a song you can't read

Lyrics, with the sounds underneath

Name a song and PlumiBot finds it, then writes the pronunciation under every line — pinyin with tone marks, Hepburn romaji, Revised Romanization, Jyutping. Enough to hold your own at KTV in a language you don't read.

What the song is about

!sing meaning explains the song you just pulled up — the story it tells, and the lines that don't survive a literal translation. Karaoke mode also reads a photo of the screen you're singing from.

More than a translator

Tools that keep a busy chat fun and tidy

Mini-games

Word Chain and Translation Duel, broadcast in every group language with leaderboards and bonus tokens for winners.

On-demand digest

!digest 3h or !digest 1d summarizes recent chat, up to 7 days back.

Stats & referrals

See top translators and active languages at a glance, and earn bonus tokens when friends join with your code.

Tappable, localized UI

Carousel menus and quick-reply buttons — every label shown in each person's own language, even in mixed groups.


Who it's for

Built for every mixed-language room

Wherever people who don't share a language share a chat, PlumiBot keeps everyone on the same page.

Couples & families

Plan dinners, share news, and keep grandparents in the loop across borders — everyone reads and replies in their own language.

Remote & global teams

Standups, handovers and watercooler chat in one LINE group. Voice notes get transcribed; menus, docs and screenshots get OCR'd and translated.

Learners & travelers

Pick up real, idiomatic phrasing from everyday chat — then put it to the test in Word Chain and Translation Duel.


The collection

Every language, in its own script

One bot, the whole cabinet — every one of them with the same natural, idiomatic translation.

Languages
126
languages, one bot
English繁體中文简体中文हिन्दीEspañolFrançaisالعربيةবাংলাPortuguêsPortuguês (Brasil)Русский日本語Deutsch한국어ItalianoTürkçeTiếng ViệtไทยPolskiУкраїнськаNederlandsRomânăΕλληνικάMagyarČeštinaSvenskaDanskSuomiNorskעבריתBahasa IndonesiaBahasa MelayuFilipinoKiswahiliதமிழ்తెలుగుमराठीاردوفارسیनेपालीසිංහලမြန်မာខ្មែរລາວქართულიአማርኛisiZuluHausaand 78 more
See every language →

How it works · step by step

From zero to translating, in six steps

Add PlumiBot, drop it into a group, breeze through a 15-second setup, and you're translating. Then upgrade and manage your plan whenever you're ready.

1

Add PlumiBot as a friend

Scan the QR code inside LINE, or tap the button under it if you're already on your phone. Either way PlumiBot is added as a friend — that's the whole install, nothing to download.

2

Add it to a group

Open any LINE group, tap Invite, and pick PlumiBot. It starts translating the moment it joins — or chat one-on-one in a DM instead.

3

Do the quick onboarding

PlumiBot sends you a 15-second DM to set your name and the language it talks to you in. In a hurry? Tap !skip. Change your mind later with !setlang fr (or any language code).

4

Use the features the right way

Just chat normally. Send a voice note to get it transcribed and translated, snap a photo of a menu or sign for clean OCR, and type !help any time for a tappable menu of everything.

5

Upgrade your plan

Hitting the free monthly limit? Type !upgrade for tappable subscribe buttons, or open the dashboard. Plans start at NT$100 ($3.15)/month — or choose pay-as-you-go credits that never expire.

6

Manage your subscription

Type !login to open your web dashboard — see usage, switch plans, and handle billing. Moving a Group Pro plan to another group? Grab the new group's ID with !groupid and transfer it in a tap. And voilà — you're fluent.

Start step 1 — add on LINE
Pricing

Simple, token-based plans

Every plan spends one clear currency — tokens — across every feature. You pay for what you actually use: a one-line message is genuinely cheap, and a photo of a menu costs what a photo of a menu costs.

What's a token?

Tokens are how AI measures text length. A short message is ~50 tokens, a normal sentence is ~200 tokens, and a long paragraph is ~1,000 tokens. A translation spends tokens on both sides — the message in and the translation out — so a normal message costs ~350 in total.

Why tokens?

Because a 5-word message and a 500-word document aren't the same. A token budget charges you for the size of what you send, not the number of times you send it — and a token costs the same whether it went through chat, a voice note or a photo. Pay as you go spends the same tokens at NT$60 per million, with no monthly fee.

The honest trade: if most of what you send is photos or long voice notes, an allowance goes down several times faster than it does on chat. That is the cost being passed on rather than averaged across everybody.

Rule of thumbToken cost
Text translation~350
Voice note, a few seconds~500
Voice note, a minute~4,000
Photo — sign, receipt, menu~3,000–8,500
Karaoke song~2,000–5,000
Daily digest~800–2,000
Game messages~200–400
Free Start here
NT$0 / month
105,000 tokens / mo
≈ 300 text messages
  • Text translation, games and digest
  • All 126 languages, unlimited per chat
  • Group or personal use
  • Voice, images, karaoke and link reading are paid
Get started free
Pay as you go Flexible
NT$0.02 / message
NT$60 per million tokens
Typical text message — photos cost more
  • Everything — voice, images, link reading
  • Top up from NT$150 — larger amounts credit up to 50% extra
  • Works with prepaid cards
  • Credits never expire
Top up credits
Personal Pro Solo
NT$100 / month
≈ $3.15
4M tokens / mo
≈ 11,000 text messages
  • Everything — voice, images, link reading
  • All 126 languages, unlimited per chat
  • Personal or small-group use
  • Priority support
Subscribe

Prices in NT$ · no card for the free tier · monthly tokens reset on the 1st, PAYG credits never expire.

Compare plans

What each plan includes

Free covers the thing most groups came for: chat translation in every language, plus games, digest and stats. Reading voice notes, photos and shared links — or fetching a whole song — costs several times more to run, so those live on the paid plans, along with a much bigger token budget.

Swipe to compare →

Feature Free PAYG Personal Pro Group Pro
Text translation
Languages per chat, at onceUnlimitedUnlimitedUnlimitedUnlimited
Voice transcription
Image OCR
Shared link reading
Karaoke romanization
Word Chain + Duel games
Group digest
Group stats
Referral bonuses
Priority processing
Transferable between groups
Chat translation modelSame on every planSame on every planSame on every planSame on every plan
Monthly tokens105KPay-per-use4M12M

Every plan translates chat on the same model, free ones included — paying more should buy you more translation, not a better sentence. The larger model is reserved for what genuinely needs it: reading voice notes, photos and shared links. We keep swapping in better models as they ship, and your plan follows along at no extra cost.

Enterprise

Need something custom?

Need more than the standard plans? We build tailored solutions — higher quotas, custom languages, dedicated support, white-label, SLAs and on-premise.

Custom quotas & pricing Dedicated support + SLA White-label & on-premise
Support hub

Common questions

Everything you might want to know before (or after) adding PlumiBot.

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 ($3.15)/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?
Type !help in LINE for an interactive menu, or email support@plumibot.com.

Longer answers

Questions that need more than a paragraph — including the ones where PlumiBot is the wrong tool.

Cheat codes

Handy commands

Everything's a chat message, and media just works. Try any of them on the screen below before you use them for real — or type !help in LINE for the full, tappable list.

FileEditChat
Try a command
Languages
Send media
Karaoke
Games & group tools
Account

Anytime: !cancel or !skip to abort the current flow.

Our story

The feather that bridges every world

PlumiBot was born from a simple desire: to make relationships easier across languages, cultures, and borders.

Plumi the carrier pigeon

Long before apps and instant messages, carrier pigeons were the world's most trusted messengers — crossing borders and braving storms to reach people who had no other way to connect. Plumi carries on that tradition in a modern form: swift, reliable, and always bridging the distance between languages and cultures.

Swift. Loyal. Always delivering.


Etymology
Latin
Pluma

The softest feather of a bird. Representing lightness, agility, and the gentle touch of a natural translation.

French
Plume

The quill used for writing. Representing the art of communication and the permanence of shared understanding.


The mission

Our goal is to make relationships easier around the world — not just through text, but through voice and images that make communication feel effortless across every language.

Relationships first

Every feature answers one question: does this make it easier for people to connect?

Culture as a bridge

Translation isn't just swapping words — it's carrying humor, warmth and tradition across.

Always evolving

New platforms, deeper lore and seasonal celebrations — PlumiBot grows with its people.

What's new

Changelog

Every update that changed something you can see, from V1 to today. Releases that only touched the machinery we run ourselves carry their own version numbers and aren't listed here, so the newest version below may sit behind the one in the footer.

v2.29.0 2026-08-25 Latest

Switch off the parts your chat doesn't want

A photo of a receipt gets read out in four languages. A voice note arrives in the middle of a meeting. Someone starts a word game in the work group. Until now the only way to stop any of that was to remove the bot. Type !app, open the group's page, and there are now switches: photos, voice notes, karaoke and games, each one on or off for that chat.

Highlights

  • Off means off, and quietly so. A chat that switched photos off simply stops translating them — no reply, nothing on every picture. Type !sing where karaoke is off and you do get an answer, because you asked for it by name: the chat switched it off, not that you need a bigger plan.
  • Photos are the switch worth knowing about: reading one dense photo can cost what thirty chat messages would, so turning them off is the fastest way to make a monthly allowance last.
  • Translation itself can be paused for one hour, six, twelve or twenty-four — for a meeting, a meal, or a conversation the group would rather keep to itself. It starts again on its own. There is deliberately no permanent off switch, so nobody can quietly mute the bot and leave the group wondering months later why it never says anything.
  • Any member of the group can change any of this, exactly as any member can already add a language. It belongs to the chat, not to whoever pays.

Commands keep working while translation is paused, so a chat can always lift its own pause — !app opens the page that turns it back on.

Show earlier updates ▾ Hide earlier updates ▴
v2.28.0 2026-08-24

The dashboard now opens inside LINE

Changing anything about your groups used to mean leaving the conversation: ask for a sign-in link, wait for it to arrive, open a browser, sign in. Type !app and the same dashboard now opens as a screen inside LINE — already signed in, because LINE knows who you are.

Highlights

  • !app works in any chat and needs no link, no browser and no password. Send it in a group and it opens straight onto that group's page.
  • Languages are now something you tap. Turn one on or off from the group's page instead of typing !lang add — and, exactly as in the chat, any member of the group can do it, not only whoever pays.
  • Paying still hands you to Stripe, but now it brings you back to where you were instead of dropping you at the start of the chat.

PlumiBot will not show up in LINE's own list of apps: being listed there needs a certified provider, which is not something Taiwan grants yet. Reach it with !app. Nothing about the ordinary website changed — !login and plumibot.com work exactly as they did.

v2.25.0 2026-08-23

臺語 and 客家話, written the way Taiwan writes them

Type 食飽未 in a Taiwanese group and PlumiBot used to read it as Mandarin, decide no translation was needed, and say nothing — leaving everyone who does not speak Taiwanese looking at a message they could not read. Taiwanese Hokkien and Hakka are now languages in their own right, and a message in either one gets translated like any other.

Highlights

  • !lang add 台語 and !lang add 客家話 — or nan and hak, or Taigi, Hokkien, Hakka, 客語.
  • Both are written in Han characters, never in POJ or Pha̍k-fa-sṳ romanisation, and never handed the same wording as each other.
  • A message typed in Taiwanese or Hakka is now recognised as such even in a group that has not switched either on — so the Mandarin readers get their translation instead of silence.
  • Voice notes in every language got better at Chinese: the bot now knows which languages a chat speaks before it listens, instead of guessing from all 124.

Voice notes in a chat with 臺語 or 客家話 switched on are still transcribed as Chinese. Dialect speech recognition fails in a way you cannot see — it reads fluently and changes the meaning — so it is not something we will ship until it is right. These two also need a stronger model, so one Taiwanese or Hakka message draws about 1,250 tokens where an ordinary message draws 350 — roughly 3,100 of them a month on Personal Pro, or 9,500 shared on Group Pro.

v2.20.0 2026-08-16

Karaoke, for songs you can't read

Finding the lyrics to a song is easy. Finding them written in letters you can actually sing from is not — and that is the part that decides whether you take the microphone. Name a song and PlumiBot now looks it up and writes the pronunciation under every line.

Highlights

  • !sing plus a song name returns the lyrics with the sound under each line — pinyin with tone marks, Hepburn romaji, Revised Romanization or Jyutping.
  • It shows you what it found and waits for you to confirm, so a wrong match costs you nothing.
  • !sing meaning explains the song you just pulled up — what it is about, and the lines a literal translation loses.
  • Karaoke mode reads a photo of the screen you are singing from, and switches itself off after 45 minutes.
  • The tappable command list now arrives in your own language too. It had quietly stayed English while the messages around it were translated.

Karaoke is a paid feature — one song costs several times what a translated message does. Everything else on Free is unchanged.

v2.15.0 2026-08-06

The bot learns to speak all 126

PlumiBot could translate into 126 languages but could only talk in seven. A Spanish group got its help screens, error messages and setup questions in English anyway. Now every language it can translate into is one it can speak to you in.

Highlights

  • Menus, help, errors and onboarding all arrive in your own language.
  • !setlang takes a code exactly as written — zh-cn, pt-br and mni-mtei no longer bounce.
  • The account language picker offers the full list, so a language you set from LINE is the one the website shows.
  • A new group now starts in English and Traditional Chinese. It used to start with French as well, which quietly charged Taiwanese groups for a French copy of every message.
v2.14.0 2026-07-29

Nothing gets refused for saying “and”

The guard that watches for people trying to hijack the translator matched the word “DAN” whatever its case — and dan is simply “and” in Indonesian and Malay. Indonesian chats were having nearly every message refused. A suspicious signal now hardens the instructions we send the model instead of dropping your message.

Highlights

  • Indonesian and Malay chats translate normally again.
  • The group's roster of names is no longer sent to the model at all.
  • When something does break in a group, the error arrives in every language the chat is set to — the sender's first — and says what actually went wrong.
  • A support reply is signed by the person who wrote it. Automatic mail still signs as the team, and it can no longer go out twice.
v2.13.0 2026-07-29

Email that looks like it came from us

Every automatic email still wore the old template, and receipts were quoting prices from two pricing models ago. All eleven have been redrawn in PlumiBot's own colours, and their plan names and amounts now read from the same source this website does — so they can't drift apart again.

Highlights

  • Eleven emails redrawn, and built to survive Outlook and blocked images.
  • Receipts no longer print retired prices.
  • Two moments that used to send nothing now do: a warning 48 hours before a plan expires, and a confirmation when a refund goes through.
  • Write to support and the answer lands on the same thread, instead of starting a new one every time.
v2.12.0 2026-07-29

Top up whatever amount you like

Pay-as-you-go credit came in three fixed sizes. Now there are six one-tap amounts up to NT$3,000, and a field for typing your own — so a top-up can match what you actually expect to use instead of the nearest button.

Highlights

  • Six preset amounts: NT$150, 300, 600, 1,000, 2,000 and 3,000.
  • Or enter any whole amount in that range yourself.
  • The larger the top-up, the smaller the share the card fee takes — NT$3,000 loses about half as much to fees as NT$150 does.
  • Every amount now shows what it costs in your own currency, at the day's exchange rate.
v2.11.0 2026-07-29

The same translation for everyone, and faster

We benchmarked our models against each other on real chat. The cheaper one translated just as well and answered several times quicker — so every plan now translates chat on it, Free included. Paying more buys you more translation, not a better sentence.

Highlights

  • Chat translation runs on the same model on every plan, and replies land noticeably faster than before.
  • The larger model is now reserved for voice notes, photos and shared links — the work that actually needs it.
  • Group Pro is 30,000 messages a month (10.5M tokens). The previous figure was priced against costs that no longer hold, and we would rather correct it than quietly degrade the service.
v2.10.0 2026-07-28

A sturdier engine, and a clearer Free tier

Translation now runs through a provider gateway instead of a single vendor, so one outage can no longer take the bot down, and the Free tier is now honest about what it covers.

Highlights

  • Voice notes, photos and shared-link reading are now paid features. On Free the bot says so straight away instead of failing quietly, and never spends your tokens on them.
  • The Free monthly allowance is now 300 messages (105,000 tokens). Games, digest and stats still come with it.
  • The plan comparison table had been understating every paid allowance — it now shows the real token budgets.
v2.9.0 2026-07-27

Every language we could reach

The language list grew from a shortlist to 126 — and every menu button in LINE now goes where its label says.

Highlights

  • All 126 languages available in every chat.
  • Menu buttons audited end to end — no more dead ends or wrong destinations.
v2.8.0 2026-07-26

Your account, in your language

Signing in and everything behind it — usage, billing, top-ups, settings — now reads in the same 14 languages as the rest of the site.

Highlights

  • The sign-in and getting-started pages carry a language picker, so a wrong guess is one tap from fixed.
  • Plan names read in your language wherever they appear.
  • Account links sent from LINE now open in your real browser, so signing in from a chat works properly.
v2.7.0 2026-07-25

A new look

PlumiBot gets the retro-computing wardrobe it always deserved — a whole new site, rebuilt page by page.

Highlights

  • Every page redrawn: pixel art, phosphor dark mode and a proper type system.
  • Light, dark and system appearance, remembered between visits.
  • Faster pages — the old stylesheet went out with the old design.
  • Other languages are being redrawn next, and keep the previous design until then.
v2.3.0 2026-07-24

Bigger allowances, same price

Every plan's monthly quota grew by a large multiple, and pay-as-you-go moved to one flat rate per message. Nothing costs more than it did.

v2.2.0 2026-07-24

Your own account area

Usage, billing and group settings in one place — sign in with !login and PlumiBot sends you a link.

v2.1.0 2026-06-12

Hardening

A security and performance pass across the whole web layer, plus faster first loads.

v2.0.0 2026-04-08

The group chat assistant

The big V2 launch — PlumiBot grows from a simple translator into a full group chat assistant with a smarter translation core.

Highlights

  • Voice-to-text transcription and smart image OCR (menu, sign, document, product).
  • Word Chain and Translation Duel mini-games with per-group leaderboards.
  • Group tools: !digest, !stats, quality feedback and referrals.
  • Tappable carousel menus and quick-reply buttons, localized per user.
v1.5.0 ~ 2026-03

Subscriptions & dashboards

Stripe subscriptions, pay-as-you-go credits, user & admin dashboards, and passwordless login via LINE DM tokens.

v1.0.0 ~ 2026-02

First public release

The original LINE bot — 50+ language group translation, name registration and context-aware conversation memory.

Get in touch

Let's start a conversation

Questions, feedback, bug reports or enterprise inquiries — every message reaches support@plumibot.com.

Enterprise & custom plans

Select Enterprise / Custom plan in the form for higher quotas, dedicated support, and SLAs.

Max 4,000 characters.
By submitting, you agree to be contacted at the email you provided.
Average response: 24h 100% human response
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language barriers?

Add PlumiBot to LINE and run your first translation in under 30 seconds — no card required. Start free, upgrade whenever your group grows.

126 languages Voice & image NT$0 to start