Comment Generator is a Chrome extension that drafts comments for Instagram, LinkedIn and Threads. 7-day free trial, paid plans from $9.99/month per platform.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
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Comment Generator is a Chrome extension that drafts comments for Instagram, LinkedIn, and Threads. It reads the caption of the post you are viewing and writes a reply in your own voice or your brand's voice. You then review the draft, edit it if you like, and post it yourself.
The product was created by Felix Melchner, a non-native English speaker who managed several Instagram accounts and struggled to comment naturally. He started building it in early 2023 after experimenting with OpenAI's Chat API, first for Instagram and now across three platforms.
The extension sits on top of each platform's web interface, so it never needs your login credentials. When you open a post, you pick an objective such as agree, disagree, or add insight, and choose a tone. Comment Generator reads the caption and drafts a comment tailored to that post.
The draft appears in the comment box. You check it, tweak it, and publish it like any other comment. Nothing is posted automatically, and the company states plainly that AI should not operate freely on social media without careful review and editing.
The core of the product is caption-based drafting, combined with a choice of commenting style. You can add your own instructions describing how you or your brand writes, so drafts avoid a generic AI tone. Comments are written in the language of the post, or in a preferred language you set.
Further settings cover comment length, formal or informal tone, and whether the comment should ask a question. An optional sign-off, such as "Best, Felix", is added to the end of every comment you generate. These controls are available before anything is published.
Comment Generator is a Chrome extension that drafts comments for Instagram, LinkedIn, and Threads. It reads the caption of a post and writes a reply in your voice, which you review and post yourself.
The 7-day free trial costs $0 and includes up to 30 comments. Pro is $9.99 per month per platform with up to 1,500 comments per month, and Unlimited is $29.99 per month per platform with unlimited comments.
Yes. The 7-day free trial requires no credit card and allows up to 30 comments. You sign up with your email address and confirm it to activate the trial.
No. Every draft lands in the comment box for you to check and edit, and you post it yourself. The company describes it as an aid, not an autopilot.
No. It runs as a browser extension layered on top of the platform and does not need your login credentials to work.
Yes. Comments are drafted in the language of the post, and you can also set a preferred language or let the tool auto-detect it from the caption.
It suits freelancers, solopreneurs and people managing multiple social accounts who want to comment consistently on Instagram, LinkedIn and Threads. Pro is aimed at freelancers and solopreneurs, while Unlimited targets multi-account use.