There is no single best one, because they are not built for the same job. If you need one language pair and nothing else, LINE's own interpreter accounts are free and sufficient. If you want the largest, longest-running consumer option in Taiwan, that is T2GO. If you are in Thailand and want to be billed in baht, that is Ligo. PlumiBot is built for the case the others handle least well: a group that needs several languages at the same time, changing over time, with voice and photos in the mix.
We wrote this because the comparisons that already exist are mostly written by the products in them, including, obviously, this one. So here is our bias stated plainly: we make PlumiBot, we would like you to use it, and the section at the bottom lists the cases where you should not.
Free, made by LINE, and each one hard-wired to a single language pair. The four LINE actually documents are all Japanese paired with one other language, and its guide page for them was last updated in March 2022. Excellent if a documented pair is exactly what you need; a gamble otherwise. Which accounts exist, and which are safe to rely on.
A Taiwanese service, and the only product here that publishes its user numbers — a figure in the tens of thousands of LINE friends, displayed on its own homepage. Over 100 languages, voice translation, and video translation in beta. Its pricing is unusual and rather smart: instead of tiers by volume it sells by situation — a few days for travel, a low monthly rate aimed at caregiving households, then personal and business plans. If you want the option with the most existing users behind it, on the only evidence anyone has published, it is this one.
A Thai product, priced in baht and aimed at the Thai market. Frequently listed as a Taiwanese competitor in English-language write-ups, which is a mistake worth knowing about if you are comparing on price: the currency and the support hours are Thai. If you are in Thailand, being local is a real advantage.
Also over 100 languages, with by far the largest library of setup and how-to articles in this category — if you have searched for anything about LINE translation, you have probably read one. Worth checking directly rather than through the write-ups.
126 languages, and the difference is that a chat carries as many of them as it needs simultaneously rather than as a pair. One message comes back in every language the group has switched on, in a single reply. It reads voice notes, photos of menus and documents, and shared links; the bot speaks to each person in that person's own language; and it does the un-serious things a group chat actually keeps a bot around for — word games, a conversation digest, karaoke lyrics with the pronunciation written underneath.
Comparing headline prices across these is close to meaningless, because they meter different things. What is worth comparing is the shape:
The practical consequence is easy to check against your own chat. A group of four sending a few messages a day stays inside PlumiBot's free plan indefinitely. A group running tens of thousands of messages a month will eventually cross the point where a flat monthly rate costs less than metered tokens — so if that is your volume, price it both ways before you commit. Most groups are nowhere near it.
Every product in this list advertises "100+ languages", including us, and the number tells you almost nothing. They are all calling the same class of translation model, and past the first thirty or so languages the differences are between rarely-used pairs that most groups will never touch. Judge these tools on what happens in a real group — how many languages at once, what happens to voice notes, whether it interrupts — rather than on the size of the number on the homepage.
All of these are free to try inside LINE and none require you to install anything, so try them. Paste in a real message from a real conversation — the awkward one with slang and a photo in it — and see which reply you would rather your colleagues read. That is a better test than any comparison table, including this page.
One thing you have to know before you do: every bot here is a LINE Official Account, and LINE does not allow two Official Accounts in the same group chat. You cannot line them up side by side — each one needs its own test group. That is a platform rule, not a choice any of these products made. Why two translation bots can't share a group.
Translation is what every bot on this page does. If you test PlumiBot, test these too — they are the parts that are not translation at all:
Name a song and PlumiBot finds the lyrics, then writes how every line is pronounced underneath it — pinyin for Mandarin, romanized Korean, Jyutping for Cantonese, romaji for Japanese. !sing meaning then tells you what the song is about.
Type a flight number, or two cities and the airline — in English, Japanese, Chinese, Korean or Thai — and see where the plane is on its route. Each card has a Follow live link anyone can open without the app, plus free buttons to send it to a group or share it as a short video. Gates, terminals and times appear for flights to and from Taiwan; elsewhere you get the map, and the aircraft once it's in the air.
Ordering drinks or lunch for a mixed group? Everyone types what they want in their own language, and PlumiBot writes the whole order up as one receipt in the language you pick — matching orders counted together, each person's name beside theirs. Send it on to the shop's chat, or save it as a picture.
Been away for a day? PlumiBot sums up what the group said, up to seven days back — written in your own language, whatever language each message was in. Add dm to read it privately.
Token figures are typical. They come out of your plan's monthly allowance — the Free plan's is 105,000, about 300 text messages. See pricing
Details about other products are from their own public pages and were checked in August 2026. Prices and features change; if you find something here out of date, tell us and we will fix it.
Add PlumiBot to LINE and run your first translation in under 30 seconds — no card required. Start free, upgrade whenever your group grows.
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