Open a post on X and Depost AI drafts a reply that fits the thread: short, specific, in the tone you set. Add your take, pick an angle, edit, and send it yourself. Nothing is posted for you.
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Why it matters
Depost AI is an AI reply generator for X (Twitter) that drafts short replies in your voice from the post, the thread above it, and your take. You edit and send each reply yourself.
A reply on X sits under a post that already has readers, which is more than a new post from a small account gets. It has to land in a line or two, in the register of the thread, and it has to be yours: the feed can smell a template. Depost AI drafts from the post and the conversation above it, with your angle in it, and leaves the sending to you.
27×
a like: the weight of a reply in X’s open-sourced ranking model, 13.5 against 0.5.
X open-source algorithm, 2023
150×
a like when the author answers your reply, the largest positive signal in that model.
X open-source algorithm, 2023
8%
more engagement on X for accounts that reply to comments, across about 2 million posts.
Buffer, 2025
How it works
Depost AI reads the post and the replies above yours, so the draft answers the actual turn in the conversation.
A comment type, a tone, and a line of what you think. Ask for several drafts and each takes a different angle.
The draft lands in the reply box. Cut it, change it, or use it as is, then send. Depost AI never posts on X for you.
What ships
Replies on X are drafted under their own rules: a line or two that answers the post, with no LinkedIn paragraph carried over.
Replying inside a thread is a turn in a conversation. The draft reads the thread, including your earlier replies, and answers what was last said.
Add your perspective and the draft is built around it, or from it alone. The reply with an opinion in it is the one that gets quoted.
Ask for up to five drafts and each takes a different angle, labeled: Experience, Counterpoint, Question. Pick the one you would have written.
Fifteen tones from Professional to Humorous. Adaptive mode keeps yours but matches the thread, so a joke gets a joke back.
Set the topics you engage on and the ones you leave alone. Outside them, Depost AI writes nothing.
When to use it
Six situations where it pays, each with the draft Depost AI would put in the box and the comment type it would pick. Read them as drafts: every one is meant to be edited before you send it.
They are describing the pain in their own words. Answer the pain, not the pitch.
We hit the same wall at 40 trials a week. Fixing the first session mattered more than any email sequence.
Adding to a good post puts your name next to it in front of their readers.
The part people miss: the lesson only holds while the team is small enough to feel it.
Reply mode reads the thread above, so the draft answers what they said.
Fair push. We measured it over two quarters, not one, and the second quarter is where the drop showed.
Disagreement with a reason gets more replies than agreement. The tone stays civil because you set it.
I would flip this. The tour is not the problem, it is the thing users do right after skipping it.
The best answer in a thread gets read for months. Depost AI can pull from your knowledge base for it.
Two things worked for us: one metric per screen, and a default that already does something.
Congratulations are easy to write badly. A specific one names what they did.
Earned. The pricing change you shipped in March is the reason this number exists.
Safe for your account
Nothing is automated. Depost AI drafts into the box while you are on X; the reply goes out from your own session, when you press the button.
No bulk, no schedule
There is no queue of comments, no timer, and no list of posts being worked through for you. One post, one draft, your decision.
Your name on it
The draft is built from your headline, your tone, and the take you typed. What it is not built from is a template, which is what a reader recognizes first.
No. Depost AI drafts into the reply box and stops. You edit and send. There is no auto-reply, no bot, and nothing that touches your account without you.
They are drafted from your name and headline, the tone and comment type you set, and the take you add. The more of your own view you put in, the more the reply reads as yours, and every draft is yours to edit before you send it.
The free tool writes a new post from a topic. This drafts replies to posts you are reading, in a thread it has read, with your styles, tones, and take applied. Different job.
You set the length as a range of words, and replies on X default to short. Whatever the draft, you see it in the box before it goes anywhere.
Your tone, comment types, and saved styles are yours everywhere; the drafting rules change per platform so a reply on X reads like X. The topics you engage on can be set per platform.
Turn on Use Post Language and the reply comes back in the language of the post.
Replies on Threads follow the same short-form rules as X. Comments on Facebook are drafted as full comments, like LinkedIn. Each has its own page.
Brief your team once. It studies, plans, writes, designs, and schedules. You approve.
Your brief comes with you: once you're set up, it's the team's first job.
7 days free · Strategy in your first 15 minutes · Cancel anytime