Telegram group vs channel comes down to who is allowed to talk. In a group, every member can post. In a channel, only the admins post, and everyone else reads, reacts and, if the owner has switched it on, comments. Almost every other difference follows from that rule.
Short answerWant a conversation among members: make or join a group.Want to broadcast to a crowd that mostly reads: make or follow a channel.Want both: run a channel and attach a discussion group to it.
Telegram group vs channel at a glance
The size and history rows come straight from Telegram's own FAQ. The rest is how the apps behave when you use them.
What a group is for
A group is a room. People walk in, talk, argue, post a screenshot and get answered. Because every member can write, a busy group moves fast, and the admins' real work is keeping it readable. That is why groups come with replies, mentions and hashtags, and with admin tools for removing spam and limiting who can post.
Size is where groups get confusing. A new group starts as a basic group with room for 200 members. When it outgrows that, Telegram upgrades it to a supergroup on its own, and a supergroup can hold up to 200,000. What changes in that jump, and what does not, is laid out in the post on Telegram member limits.
What a channel is for
A channel is a notice board with a very large audience. The owner and any admins post. Subscribers read. Every post is signed with the channel's name, not a person's, and carries a view counter that also counts views of forwarded copies. Telegram's channels FAQ says those view numbers are approximate, which matters if you are judging a channel by them.
A channel has no ceiling on subscribers, and newcomers can scroll back through everything ever posted. That makes channels good for things people want to catch up on: exam notifications, price drops, coding notes, daily news.
Many of the popular ones pair the channel with a discussion group. The announcement lands in the channel, a comment button appears under it, and the conversation happens in the attached group. If you have ever tapped "comments" under a post and ended up in a chat, that was it.
Small details that trip people up
Privacy works differently on each side. In a group, members can usually see who else is in it. Subscribers to a channel generally cannot browse the follower list the same way, so following a channel feels more private than joining a group.
Posts in a channel can carry an admin's signature, but only if the owner switches that on. With signatures off, there is no way for a subscriber to tell whether the owner or an assistant wrote something. Deleting a post removes it for every subscriber at once, which is why corrections in channels look so clean.
Both kinds can be public or private. Public ones have a username and show up in search. Private ones need an invite link. Telegram's channels FAQ treats a private channel with a widely shared invite link the same as a public one if there is ever a content dispute, so a "private" label is not a promise of secrecy.
Picking one for your own setup
Ask what you want members to do. If the answer is "talk to each other", you want a group. If it is "read what I post", you want a channel. If it is both, start with the channel and add a discussion group, so the broadcast stays clean and the chatter has a place to go.
Small and private, like a class or a project team, a group is almost always right. Starting a channel for a handful of friends is overkill, and nobody can answer back. Planning to reach people you will never meet, and not hear from them? Use a channel.
Whichever you choose, the first stretch of growth is the hardest part. How people actually find Telegram groups is worth knowing before you promote yours, because it shows what a searcher sees in the first few seconds.
A coaching batch is a good example. A channel carries the timetable, the PDFs and the test dates. A group next to it handles doubts. Doubts posted in the channel bury the timetable, and a timetable posted in the group disappears under the chat.
Telling which one a link points to
A t.me link can lead to either. Open it and read the line under the name: members means a group, subscribers means a channel. If you can only read and a Join button is all you get, you are looking at a channel. If you see a message box once you are in, it is a group.
WhatsApp splits things in a similar way, with a community layer on top of its groups and channels. Its own version of this comparison is in WhatsApp channel vs group, and the same logic about who gets to speak carries across.
Where to start looking
If you want conversation, browse the Telegram groups directory. If you want a feed, the Telegram channels directory is sorted by topic. For how invite links, usernames and listings fit together, how group links actually work is the overview.