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.
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.
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