Put your agent in the chat app you already open all day, because that's where you'll use it most. If LINE is your main messaging app, choose LINE. If you're starting fresh or want the quickest setup, choose Telegram. If everyone you know is on WhatsApp, that's coming soon to Able°, and Telegram is the easiest place to start in the meantime.

Able° works with Telegram and LINE today, and WhatsApp support is on the way. Platform details below were checked on 24 October 2026.

At a glance

Telegram LINE WhatsApp
Able° support Live Live Coming soon
What your agent needs A Telegram bot, made in about a minute, no phone number A LINE Official Account with the Messaging API turned on A WhatsApp Business Platform number that isn't already on WhatsApp
Is your chat with the agent end-to-end encrypted? No No No
Group chats Yes; bots see only messages meant for them unless you change that Yes More limited; built mainly around one-to-one chats
Voice notes and files Bots can receive both Bots can receive both Business numbers can receive both
Where it's strongest Worldwide, on every device including desktop and web Japan, Taiwan and parts of Southeast Asia The most widely used of the three worldwide

Developer documentation: Telegram bots, LINE Messaging API, WhatsApp Business Platform.

Which app do you already live in?

Start here, because it outweighs every other row in the table. An agent earns its keep through small, frequent exchanges: a reminder at 7:30, a quick "draft a reply to this", a voice note on the way to a meeting. If it lives in an app you only open on purpose, those exchanges stop happening.

LINE is the main messaging app in Japan, Taiwan and parts of Southeast Asia. If your family, friends and colleagues are there, your agent should be too. It'll sit alongside the chats you check anyway.

Telegram is the easiest home if you don't have a strong habit elsewhere, or if you work at a computer. It runs on phones, desktop and the web with the same chats everywhere, so you can paste a long document from your laptop and pick up the reply on your phone. New to it? Our five-minute Telegram guide covers setup and privacy settings.

WhatsApp is the default in much of the world. Able° support is coming soon; until then, many people keep WhatsApp for friends and give their agent a separate home on Telegram. Some prefer that split anyway, because work stays out of the family chat list.

How private is a chat with your agent?

On all three apps, the conversation with your agent isn't end-to-end encrypted in the way a chat between two friends can be. The agent's server has to read your message to answer it, so the message is decrypted there.

  • Telegram stores ordinary chats in its cloud, encrypted between your device and Telegram's servers. Its end-to-end Secret Chats are one-to-one between people and don't sync across devices (Telegram FAQ).
  • LINE encrypts chats between people with Letter Sealing, its end-to-end protocol, where every participant has it on (LY Corporation). A chat with an Official Account is a chat with a service, which has to read what you send.
  • WhatsApp is end-to-end encrypted between people by default. Meta says chats with a business number run through its hosted Cloud API aren't end-to-end encrypted, because Meta manages the keys on the business's behalf (Meta for Developers).

The app matters less than where the agent runs and what its model provider does with your words. Our guide to what happens to your data covers that. Whichever app you pick, keep passwords, card numbers and anything you couldn't afford to see leaked out of the chat.

What does each app need before your agent can talk to you?

Telegram: a bot. Telegram runs every bot through @BotFather, and it needs no phone number. A bot's username must end in "bot", so it never looks like a person in your chat list. With Able°, we create the bot for you during a one-minute Telegram connection.

LINE: a LINE Official Account. LINE only runs bots through Official Accounts with the Messaging API turned on, so that's what your agent uses. The name sounds commercial, but it's simply how LINE labels any automated account. For you, it's a private doorway to your agent: you add it as a friend, and it doesn't need to appear in search or be shared with anyone. The LINE connection guide walks through it in about five minutes.

LINE counts messages that an account starts (such as a scheduled morning summary) against a free monthly allowance, while replies to your messages are always free. The allowance depends on your country's plan; in Japan the free Light plan includes 200 a month (LINE pricing).

WhatsApp: a business number. Agents connect through Meta's WhatsApp Business Platform, using a phone number that isn't already registered on WhatsApp and a Meta business portfolio, which Meta creates if you don't have one. WhatsApp allows free-form messages within 24 hours of your last message; after that, a business number can only start a conversation with a pre-approved template, which shapes how scheduled check-ins work. Each number gets 1,000 free service messages a month, with per-message charges beyond that since 1 October 2026 (Meta pricing). Light personal use usually stays within that.

Can your agent join groups, hear voice notes and open files?

Groups. Telegram and LINE both let a bot join a group chat, which suits a small team or a household sharing an agent. In Telegram groups, privacy mode is on by default: the bot sees commands, replies to its own messages and messages that mention it, and nothing else unless an admin changes it. WhatsApp's business platform is built mainly around one-to-one chats.

Voice notes. All three apps let you send voice notes, and their bot platforms pass them to the agent as audio. Whether the agent can transcribe and act on one depends on the agent, so check before you plan around it.

Files and photos. The same applies: Telegram, LINE and WhatsApp can all deliver images and files to a bot, and what happens next is up to the agent. Telegram is the most comfortable for sending documents from a computer, thanks to its desktop and web apps.

Which should you choose?

LINE, if it's the app you open most. The Official Account step takes a few extra minutes, once.

Telegram, if you want the fastest setup, you work across a phone and a computer, or you'd like your agent kept apart from personal chats.

Telegram now and WhatsApp later, if WhatsApp is your main app. When Able° adds WhatsApp you can move, or keep both.

Two apps, if you'd like your agent in a work group on one and in private chats on the other. Running one agent in two places is fine; just remember both chats feed the same memory.

Common questions

Does my agent need its own phone number?

On Telegram and LINE, no: a Telegram bot needs no number, and a LINE Official Account doesn't need a separate one. WhatsApp is the exception, because every business account is tied to a number that isn't already registered on WhatsApp.

Can other people find my agent's LINE account?

Only if you share its link or QR code. The account exists so that you can reach your agent, and you're its only intended contact, so there's no reason to publicise it. Treat the link like a private phone number and keep it to yourself.

Can I switch apps later without losing anything?

Yes. Your agent's memory and skills live with the agent, not in the chat app, so moving from Telegram to LINE or WhatsApp means connecting the new app rather than starting again. Your old chat history stays in the old app.

Is Telegram safe enough for work material?

For everyday drafting and planning, most people find it fine, as long as they understand that ordinary chats are stored in Telegram's cloud. If your employer has rules about where work data can go, check them first; our employer check guide covers what to ask.