9 Best LinkedIn Comment Generators for 2026 (Free + Paid)

LinkedIn rewards people who comment. Not the "Great post!" kind -- the kind that starts conversations, gets profile clicks, and builds your reputation one interaction at a time.

The problem? Writing thoughtful comments on 10-15 posts per day takes 30-60 minutes. Multiply that across a week and you're spending half a workday on comments alone.

That's where LinkedIn comment generators come in. We tested 9 of them to find out which ones write comments worth posting -- and which ones produce generic filler that hurts more than it helps. Here's what we found.

Quick Comparison

Before diving into each tool, here's a side-by-side overview:

1. Reepl -- Full LinkedIn Growth Platform with AI Comments

Reepl is a Chrome extension that injects an AI writing assistant directly into LinkedIn. When you open a comment box, Reepl adds a "Write Comment" button that generates context-aware comments based on the post content.

What sets it apart from most tools on this list: you control exactly how the comment sounds. Pick a response type (engaging, grateful, insightful, or your own custom intents), set the word limit (minimal, concise, or detailed), choose a tone, and optionally add a custom prompt to steer the output.

Key Features

• Custom prompt library -- Build your own commenting prompts instead of being locked into templates. Add custom response types with specific instructions for each.

• Voice profiles -- Train the AI on your writing style so comments match your natural voice, not generic AI speak.

• 10+ language support -- Generate comments in English, Spanish, French, German, Portuguese, Japanese, Russian, and Chinese.

• Smart messaging assistant -- The same AI extends to LinkedIn DMs with intent-based quick responses for sales, networking, recruiting, and more.

• Post generation -- Repurpose articles, PDFs, and YouTube videos into LinkedIn posts from the same extension.

• Scheduling + analytics -- Queue posts via the web app at app.reepl.io with a calendar view and engagement tracking.

• 20+ free tools -- Carousel maker, post formatter, headline analyzer, and more at tools.reepl.io.

Pricing

Free plan includes 10 AI comments and 10 AI messages per day. Paid plans unlock unlimited usage, advanced AI models, and multi-account support. See current pricing at reepl.io/pricing.

What We Like

• Works directly on LinkedIn -- no switching between tabs or apps

• The custom prompt system is genuinely flexible. You're not stuck with 3 preset tones

• Voice profiles make a noticeable difference in output quality over time

• Covers comments, messages, posts, and scheduling in one extension

What Could Be Better

• The free plan's 10 comments/day limit means power users will hit the cap quickly

• No automated commenting -- every comment requires manual review and posting

2. Engage AI -- Best Free Plan for Sales Teams

Engage AI has been around longer than most tools on this list, and their free plan is hard to beat: unlimited AI comments using GPT-4o mini with no credit card required.

The standout feature is prospect monitoring. Add up to 10 LinkedIn profiles (free plan) or 200+ (paid), and Engage AI alerts you when they post. This turns commenting from a random scroll activity into a targeted engagement strategy.

Key Features

• Unlimited AI comments on the free plan (GPT-4o mini model)

• Prospect monitoring with daily or real-time alerts

• 3 custom tones (free) up to 20 (Elite plan)

• HubSpot and Hootsuite integrations

• Tailored connection request generation

Pricing

Free forever plan with unlimited comments. Starter at $12.90/mo adds GPT-4o and 50 monitored prospects. Pro at $30/mo unlocks GPT-4 and 100 prospects. Elite at $80/mo adds Gemini access and 200+ prospects.

What We Like

• The free plan is genuinely useful -- not a stripped-down teaser

• Prospect monitoring turns random commenting into a sales strategy

• Low entry price for paid plans compared to competitors

What Could Be Better

• Comment quality on the free tier (GPT-4o mini) is noticeably weaker than paid models

• Some users report bugs and performance issues in the Chrome extension

• The platform has had a rocky history with feature removals that frustrated paying users

3. Taplio -- Best for Power Users Who Need a Lead Database

Taplio is one of the most well-known LinkedIn tools, and for good reason. It combines content creation, scheduling, analytics, and a 3M+ contact database into one platform.

For commenting specifically, Taplio offers an "Engage" feature that surfaces posts from your target audience so you can comment without scrolling your feed. The Chrome extension (Taplio X) is free and provides basic AI assistance on LinkedIn.

Key Features

• AI trained on 500M+ LinkedIn posts

• Engage feature to find and comment on relevant posts

• 3M+ LinkedIn contact database for prospecting

• Post scheduling with detailed analytics

• Carousel creation

• Free Chrome extension (Taplio X) with basic features

Pricing

Starter at $39/mo (no AI features). Standard at $65/mo with 100 reply credits/month. Pro at $149/mo with 500 reply credits. Annual billing saves roughly 30%.

What We Like

• The contact database is a powerful differentiator for outbound sales

• Analytics go deeper than LinkedIn's native insights

• The free Chrome extension works without a paid subscription

What Could Be Better

• Expensive. The cheapest plan with AI commenting costs $65/mo

• Comment credits burn fast -- a credit-per-comment model feels restrictive

• The AI doesn't learn your personal voice. Output often sounds generic and requires heavy editing

• Has faced LinkedIn restrictions in the past due to automation

4. Supergrow -- Best for Content Creators

Supergrow positions itself as an all-in-one LinkedIn growth tool with a strong content creation focus. The AI commenting feature generates context-aware comments, but the real value is the broader platform: voice-matched post generation, carousel creation, and a content calendar.

A unique feature is Engage Lists -- build curated lists of creators and prospects, then comment on their posts directly from the Supergrow dashboard without opening LinkedIn.

Key Features

• AI comment generation with voice learning

• Engage Lists for targeted commenting

• Content calendar with Kanban board

• First-comment scheduler (auto-posts a follow-up comment on your own posts)

• Carousel maker and post templates

• Voice-to-post conversion

Pricing

Starter at $19/mo. Pro at $39/mo. Team plans start at $69/mo for 4 clients. Agency plan at $159/mo for 10 clients. 7-day free trial, no permanent free plan.

What We Like

• Voice learning makes AI output improve the more you use it

• First-comment scheduling is a clever feature most tools miss

• Competitive team/agency pricing

What Could Be Better

• No free plan -- only a 7-day trial

• Adding engagement contacts manually is tedious

• Analytics are basic compared to Taplio or Shield

5. Commenter.ai -- Best Dedicated Commenting Tool

While most tools on this list bundle commenting into a larger platform, Commenter.ai focuses entirely on making you a better commenter. That narrow focus shows in features like TextTune (fine-tune your writing style) and 13 different commenting styles on the higher tier.

They also offer a Done-For-You plan where a human team writes and posts 15 voice-matched comments per day on your behalf. It's expensive, but it exists for executives who want the results without the work.

Key Features

• TextTune for custom voice matching

• Up to 13 commenting styles and 5+ emotional tones

• SmartReply+ for quick contextual responses

• Multi-language support

• Commenter Academy (video courses on strategic commenting)

• DFY plan: 15 human-edited comments/day with monthly reports

Pricing

Starter at $12/mo (300 comments). Creator at $17/mo (900 comments). Influencer at $27/mo (3,000 comments). DFY at ~$164/mo billed annually.

What We Like

• Affordable entry point ($12/mo)

• The DFY option is unique -- no other tool offers human-managed commenting

• Commenter Academy adds genuine educational value

What Could Be Better

• Comment limits on cheaper plans are restrictive (300/mo on Starter)

• Smaller user base means fewer community resources and third-party reviews

• No scheduling, analytics, or post creation -- commenting only

6. PowerIn -- Best for Automated High-Volume Commenting

PowerIn takes a different approach from every other tool here: full automation. Set your target keywords and creators, and PowerIn comments on their posts automatically during business hours. No manual review required.

This is the highest-volume option on the list -- up to 200 comments per day on the Corporate plan. But full automation comes with risk. LinkedIn's terms of service prohibit automated engagement, and some users have reported account restrictions.

Key Features

• Fully automated commenting (no manual posting)

• Up to 200 comments/day on Corporate plan

• Keyword and creator targeting

• Language detection (comments in the post's language)

• Timezone-aware posting (9 AM - 6 PM local time)

• Company page commenting

• Automatic filtering of political and sensitive content

Pricing

Standard at $39/mo (20 comments/day). Corporate at $59/mo (100 comments/day). Twitter plans start at $69/mo. 5-day free trial, no permanent free plan.

What We Like

• True hands-off automation saves significant time

• Language detection is smart -- matches the post's language automatically

• Safety filters avoid engaging with sensitive content

What Could Be Better

• Full automation risks your LinkedIn account. This is the elephant in the room

• Trustpilot reviews are mixed -- some users report far fewer comments than advertised

• Reports of unauthorized auto-liking without user permission

• Comment quality tends to be repetitive at high volume

• No free plan and no scheduling/content creation features

7. Tappy -- Best for Simplicity

Tappy strips LinkedIn comment generation down to one action: tap a button, get a comment. No configuration menus, no engagement lists, no dashboards. Open a LinkedIn post, click the Tappy button, and paste the generated comment.

The AI trains on your recent LinkedIn comments to match your writing style, which is a nice touch for a lightweight tool.

Key Features

• One-tap comment generation

• Three voice templates

• Custom AI model trained on your recent comments

• Privacy-focused (no data stored after interaction)

Pricing

Free plan with 5 comments/day. Pro at $18/mo (25/day). Scale at $59/mo (100/day).

What We Like

• The simplest tool on this list -- zero learning curve

• AI training on your actual comments is a smart personalization approach

• Strong privacy stance

What Could Be Better

• English only -- no multi-language support

• Chrome only -- no Firefox, Safari, or Edge

• No web dashboard, analytics, or content creation features

• Free plan is very limited (5 comments/day)

8. FlyEngage AI -- Best Free Alternative

FlyEngage AI by Vengreso is a fully free LinkedIn comment generator. No credit limits, no trial periods. It's part of the broader FlyMSG ecosystem but works as a standalone Chrome extension for comment generation.

The tool uses persona integration to match your industry jargon, tone, and vocabulary. It generates suggestions that you then manually post -- no automation risk.

Key Features

• 100% free comment generation

• Persona-based customization (industry, tone, vocabulary)

• Hashtag removal toggle

• Human-assisted AI (generates suggestions, you post manually)

Pricing

Free. The broader FlyMSG platform has paid plans starting at $3.97/mo, but the comment generator is free.

What We Like

• Actually free -- not a limited trial masquerading as a free plan

• No automation risk since you control every comment

• Persona matching adds a layer of personalization most free tools lack

What Could Be Better

• Part of a larger ecosystem that can feel cluttered

• Less polished UI compared to paid alternatives

• Limited customization options compared to tools like Reepl or Commenter.ai

9. Extrovert -- Best for B2B Sales Pipeline Warming

Extrovert isn't a traditional comment generator. It's a prospect warming tool that uses AI comments as a strategy to build familiarity before cold outreach.

Build prospect lists, and Extrovert generates personalized comments on their posts with context from their company and recent activity. The goal: when you eventually send a connection request or DM, they already recognize your name.

Key Features

• Campaign-based engagement (prospect lists per campaign)

• Context insights about each prospect's company and role

• Writing style learning

• Topic monitoring

• Unlimited AI comments on all plans

Pricing

Light at $29/mo. Business at $75/mo (annual) or $99/mo (monthly). 10-day free trial.

What We Like

• The "warm before you reach out" strategy is proven -- Extrovert claims a 40% reply rate vs. 5-10% industry average

• Unlimited comments on all plans (no credit counting)

• Company context makes comments more relevant than generic AI output

What Could Be Better

• Web app only -- no Chrome extension for commenting directly on LinkedIn

• Purely sales-focused. Not useful for personal branding or general engagement

• The cheaper plan is limited in prospect capacity

How to Pick the Right LinkedIn Comment Generator

The "best" tool depends on what you're trying to accomplish:

• Growing a personal brand? You need tone control and voice matching. Look at Reepl, Supergrow, or Commenter.ai.

• Running outbound sales? Prospect monitoring and warm-up matter most. Engage AI, Extrovert, or Taplio (for the lead database).

• Want an all-in-one tool? Comments, posts, scheduling, and analytics in one place. Reepl, Taplio, or Supergrow.

• On a tight budget? Start with FlyEngage AI (free) or Engage AI's free plan, then upgrade when you see results.

• Need maximum volume? PowerIn automates at scale, but weigh the LinkedIn compliance risk.

A Warning About Automated Comments

Tools like PowerIn that post comments automatically save time, but they carry real risk. LinkedIn actively detects and restricts automated engagement. Account suspensions, reduced reach, and permanent bans are all possible consequences.

Most tools on this list use a safer approach: the AI generates the comment, but you review and post it yourself. This keeps you in control of quality and keeps your account safe. If you're investing time in LinkedIn growth, losing your account to automation isn't worth the time saved.