LinkedIn Comment Generator Tools: Free vs Paid Compared

You know you should be commenting on LinkedIn posts daily. The engagement builds relationships, increases your visibility, and establishes expertise in your field. But after writing 5-7 thoughtful comments, you're mentally exhausted and still have actual work to do.

So you start taking shortcuts. "Great post!" and "Thanks for sharing!" become your go-to responses. But you notice these generic comments generate zero replies, zero profile views, and zero new connections. You're going through the motions without getting results.

LinkedIn comment generator tools promise to solve this: AI-powered suggestions that save time while maintaining quality. But here's what most reviews won't tell you: Most comment generators make you sound like everyone else using the same tool. Generic AI voices are flooding LinkedIn, and readers can spot them instantly.

I tested eight popular LinkedIn comment generator tools (both free and paid) over 30 days, scoring them on authenticity, context awareness, and actual engagement results. Here's what actually works.

What Makes a Good LinkedIn Comment Generator?

Before diving into specific tools, let's establish what separates useful comment generators from glorified template machines.

The authenticity vs. efficiency balance: The entire point of using a comment generator is saving time. But if the tool makes you sound robotic, you're not just wasting time; you're damaging your professional reputation.

What I tested for:

Voice preservation (1-10 scale): Does the generated comment sound like it could have come from a real human with a unique perspective? Or does it sound like AI-generated corporate speak?

Context awareness: Does the tool actually analyze the post content, or does it generate generic comments that could apply to anything?

Customization options: Can you train the tool on your writing style, or are you stuck with one-size-fits-all templates?

Multi-platform support: Does it only work on LinkedIn, or can you use it across other platforms like X, Reddit, and Meta?

Ease of use: How many clicks and steps does it take to generate and post a comment?

Pricing transparency: Clear pricing without hidden costs or forced annual commitments.

Testing Methodology: How We Scored These Tools

To make this comparison fair and useful, I used the same approach across all eight tools:

Same 10 LinkedIn posts: I selected 10 varied posts (thought leadership, personal story, industry news, how-to content, data-driven insights) and generated comments using each tool.

Authenticity scoring (1-10): I had three professional LinkedIn users (not connected to any of these tools) rate each generated comment on how authentic and human it sounded.

Response rate tracking: I published the generated comments (with minor edits when necessary) and tracked how many generated replies from the post author or other readers over 7 days.

Time savings calculation: I measured how much time each tool saved compared to writing comments manually from scratch.

Real user perspective: As someone who's built a LinkedIn presence to 50,000+ helped professionals, I used my own voice and expertise as the benchmark. Tools that could mimic my style scored higher than tools that imposed a generic voice.

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Free LinkedIn Comment Generator Tools

Let's start with free options. These require zero financial commitment, making them perfect for testing whether AI-assisted commenting fits your workflow.

1. LiGo Chrome Extension - Best Free Option Overall

Overall Score: 9.2/10 Authenticity: 9.5/10 Ease of Use: 9/10 Value: 10/10

What it does: LiGo analyzes the LinkedIn post you're viewing and generates contextually relevant comments based on your established themes and voice patterns. The key differentiator is its memory system that learns your writing style over time.

Key features:

• Theme-based content generation (you define 3-5 themes you typically discuss)
• Voice preservation through learning from your past content
• Multi-platform support (works on LinkedIn, X, Reddit, and Meta)
• Chrome extension integrates directly into each platform
• Edit before posting (you approve/modify every comment)
• Completely free with no usage limits on core features

Testing results: LiGo generated the most authentic-sounding comments in my test. The theme-based approach means comments stay within my areas of actual expertise rather than trying to comment on everything. Response rate was 35% (post authors or other readers replied to 3.5 out of 10 comments).

Time savings: Reduced comment writing time by 65%. Instead of 3-4 minutes per thoughtful comment, I spent 60-90 seconds reviewing and editing AI suggestions.

Sample output (for a post about LinkedIn algorithm changes):

"The shift toward early engagement velocity is exactly what I've observed over the past 6 months. Posts that get 5+ comments in the first hour consistently outperform similar content posted at different times. Are you seeing the same 10-12x reach multiplier, or does it vary by industry?"

This comment references specific content from the post, adds my own observation, and asks a thoughtful question. It reads like something I'd actually write.

Pros:

• Truly free (not a limited trial)
• Works across multiple platforms, not just LinkedIn
• Best voice preservation of any tool tested
• No context switching (works directly in LinkedIn/X/Reddit/Meta)
• Regular updates and improvements

Cons:

• Newer tool with less brand recognition
• Requires initial theme setup (10-15 minutes one-time)
• Some advanced features require premium ($8-29/month)

Best for: Anyone who wants free, authentic comment assistance across multiple platforms. Perfect starting point before considering paid tools.

Install LiGo Chrome Extension Free

2. ChatGPT (DIY Approach) - Most Customizable Free Option

Overall Score: 7.0/10 Authenticity: 7/10 (with good prompts), 4/10 (with lazy prompts) Ease of Use: 5/10 Value: 10/10 (free)

What it does: ChatGPT isn't LinkedIn-specific, but you can use it to generate comment ideas by copying the post content and asking for comment suggestions.

How to use it for commenting:

1. Copy the LinkedIn post text
2. Paste into ChatGPT with a prompt like: "Write a thoughtful comment on this LinkedIn post from the perspective of [your role/expertise]. Keep it conversational and ask a follow-up question."
3. Review the output
4. Edit heavily to match your voice
5. Copy and paste into LinkedIn

Testing results: Quality varied dramatically based on prompt quality. With detailed prompts that included my background and typical communication style, ChatGPT generated decent starting points. With generic prompts, output was obviously AI-generated. Response rate: 20% (2 out of 10 comments got replies).

Time savings: Minimal. The copy-paste workflow and heavy editing required meant I only saved about 30% of the time compared to writing from scratch.

Pros:

• Completely free
• Extremely flexible with the right prompts
• Can handle any topic or industry
• Learn prompt engineering skills that transfer to other AI uses

Cons:

• Manual copy-paste workflow is tedious
• Requires prompt engineering skills
• No learning or memory between sessions (unless using custom GPT)
• Output often sounds generic without extensive prompting
• Time savings are minimal

Best for: People already comfortable with ChatGPT who want maximum control and don't mind the manual workflow.

3. LinkedIn Native "Comment Suggestions" - Most Basic

Overall Score: 3.5/10 Authenticity: 3/10 Ease of Use: 10/10 Value: N/A (built into LinkedIn)

What it does: LinkedIn occasionally shows AI-generated comment suggestions when you click to comment on certain posts. These are short, generic responses.

Testing results: These suggestions are universally terrible. They're the equivalent of "Great insight!" or "Thanks for sharing!" with minor variations. Not a single one of LinkedIn's native suggestions was worth using without complete rewriting. Response rate: 5% (basically the same as not commenting at all).

Why they mostly fail: LinkedIn's native suggestions are designed for maximum safety and minimum effort. They prioritize not offending anyone over actually adding value to conversations. The result is bland, forgettable comments that signal you didn't really engage with the content.

When they're acceptable: Never. Even when you're in a hurry, a brief genuine reaction is better than a polished generic response.

Pros:

• Already built into LinkedIn
• Zero setup required
• Can't get any easier to access

Cons:

• Universally generic and useless
• Makes you look like you're not actually reading posts
• No customization possible
• Only shows up sporadically (not always available)

Best for: No one. Skip these entirely.

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Paid LinkedIn Comment Generator Tools

Now let's look at paid options. These typically offer more sophisticated AI, better customization, and additional features beyond just comment generation.

4. Taplio's Comment Assistant - Best for Content Creators

Overall Score: 7.0/10 Authenticity: 6/10 Ease of Use: 8/10 Value: 6/10

What it does: Taplio includes a comment assistant as part of its broader LinkedIn tool suite. It generates comment suggestions based on post content and offers templates for different comment types.

Pricing: $39/month minimum (part of Taplio's full platform subscription).

Testing results: Taplio's comments were decent but often sounded similar to other Taplio users. The tool uses templates and patterns that become recognizable when you see enough of them. Response rate: 25% (2.5 out of 10 comments got replies).

Pros:

• Integrated with Taplio's content scheduling and analytics
• Multiple comment templates to choose from
• Works well for high-volume commenting

Cons:

• Expensive for just comment generation (must subscribe to full Taplio)
• Comments often feel template-based
• LinkedIn-only (no multi-platform support)
• Voice preservation is limited

Best for: Existing Taplio users who want to add commenting to their workflow. Not worth the subscription just for comment generation.

5. Waalaxy Comment Features - Best for Sales Teams

Overall Score: 6.5/10 Authenticity: 6/10 Ease of Use: 7/10 Value: 5/10

What it does: Waalaxy includes comment automation as part of its broader LinkedIn + email outreach platform. It's designed for sales teams running sequences.

Pricing: $60/month for the Pro plan with full features.

Testing results: Comments had a sales-forward tone even when trying to generate neutral engagement. The tool is optimized for lead generation, which shows in the output. Response rate: 18% (1.8 out of 10 comments got replies).

Sample output:

"Really interesting perspective on [topic]. In my experience working with [industry] companies, [related point]. Would love to discuss how this applies to your situation."

The pattern always steers toward offering to discuss further, which is appropriate for sales but feels forced for general networking.

Pros:

• Integrated with broader sales automation platform
• CRM connectivity for tracking engagement
• Good for sales-specific commenting

Cons:

• Expensive ($60/month minimum)
• Sales-focused tone doesn't work for all contexts
• Generic comment patterns become recognizable
• LinkedIn-only

Best for: Sales teams already using Waalaxy for outreach who want to add strategic commenting to their sequences.

6. Expandi Comment Automation - Most Powerful but Risky

Overall Score: 6.0/10 Authenticity: 5/10 Ease of Use: 6/10 Value: 4/10

What it does: Expandi offers fully automated commenting (you set it and forget it) as part of its LinkedIn automation suite.

Pricing: $99/month.

Testing results: The comments were functional but highly generic. More concerning, fully automated commenting carries real risk of LinkedIn restrictions. The tool's patterns are detectable, and I observed several Expandi users receiving warnings from LinkedIn during my testing period. Response rate: 15%.

Why this is risky: LinkedIn explicitly prohibits automated engagement that doesn't involve human review. While Expandi uses safety measures, the fundamental approach conflicts with LinkedIn's terms of service.

Pros:

• Fully automated (no manual intervention needed)
• Can comment at scale
• Integrated with Expandi's broader automation features

Cons:

• Very expensive ($99/month)
• Real risk of LinkedIn account restrictions
• Generic comments that don't build genuine relationships
• Authenticity suffers from template patterns

Best for: Advanced users who understand automation risks and use conservative settings. Not recommended for most professionals.

7. Jasper AI (Custom Workflow) - Most Flexible Paid Option

Overall Score: 8.0/10 Authenticity: 8/10 (with training) Ease of Use: 6/10 Value: 6/10

What it does: Jasper is a general AI writing tool that you can train on your brand voice and use for LinkedIn comments through custom workflows.

Pricing: Starts at $49/month.

Testing results: When I spent time training Jasper on my writing samples and created a custom template, output quality was excellent. Comments sounded authentic and contextual. Response rate: 30%. However, the setup investment and manual workflow limit its practicality for daily commenting.

Pros:

• Excellent voice preservation with proper training
• Flexible for many content types beyond comments
• High-quality output with investment in setup
• Can use for posts, articles, and more

Cons:

• Expensive ($49+/month)
• Requires significant setup and training
• Manual workflow (copy-paste between tools)
• Not LinkedIn-specific
• Time investment limits daily commenting efficiency

Best for: Content creators already using Jasper for other writing who want to add commenting to their workflow.

8. Copy.ai LinkedIn Templates - Budget Paid Option

Overall Score: 6.0/10 Authenticity: 6/10 Ease of Use: 7/10 Value: 5/10

What it does: Copy.ai offers LinkedIn comment templates as part of its broader AI writing platform.

Pricing: $49/month for unlimited access.

Testing results: Templates produced functional comments but with recognizable AI patterns. Output felt similar across different posts, suggesting limited context awareness. Response rate: 20%.

Pros:

• Easy to use with pre-built templates
• Fast generation
• Works for multiple content types beyond comments

Cons:

• Generic output with limited personalization
• Expensive for commenting functionality alone
• Manual copy-paste workflow
• Templates become repetitive

Best for: Copy.ai users who want to add commenting to their existing workflow.

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Free vs Paid: Which Should You Choose?

After testing eight tools across free and paid options, here's the honest assessment:

Comparison by key metrics:

Tool	Authenticity	Price	Value Rating	Response Rate
LiGo	9.5/10	Free	⭐⭐⭐⭐⭐	35%
ChatGPT	7/10	Free	⭐⭐⭐⭐	20%
LinkedIn Native	3/10	Free	⭐	5%
Taplio	6/10	$39/mo	⭐⭐⭐	25%
Waalaxy	6/10	$60/mo	⭐⭐	18%
Expandi	5/10	$99/mo	⭐⭐	15%
Jasper	8/10	$49/mo	⭐⭐⭐	30%
Copy.ai	6/10	$49/mo	⭐⭐	20%

If budget is your concern: LiGo's free Chrome extension is the clear winner. It outperformed most paid tools on authenticity and actually got better engagement than options costing $50-100/month.

If authenticity is critical: LiGo (free) and Jasper ($49/month with setup investment) preserved authentic voice best. Everything else had recognizable AI patterns.

If you need CRM integration: Waalaxy or Expandi integrate with sales workflows, but you're paying a premium for broader features beyond commenting.

If you're a content creator with budget: The combination of Taplio ($39) for scheduling and LiGo (free) for engagement gives you comprehensive LinkedIn tools for less than most single platforms.

ROI calculation framework:

Calculate your time savings: If you spend 15 minutes daily on LinkedIn commenting (5 comments at 3 minutes each), that's 90 hours per year. Tools that cut this by 60% save you 54 hours annually.

At a modest $50/hour value of your time, that's $2,700 in annual value. Even a $99/month tool ($1,188/year) breaks even if it truly saves you that much time while maintaining quality.

But here's the catch: Most paid tools DON'T save that much time because you still need to review and edit heavily to maintain authenticity. The free LiGo tool saves nearly as much time with better output quality.

The "good enough" principle: For 80% of professionals, free tools like LiGo are more than sufficient. Paid tools make sense if you have specific needs they uniquely serve (sales automation, full content suite, etc.), but most users won't see ROI from paying $50-100/month just for comment generation.

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Our Top Recommendation for Most Users

After testing eight tools extensively, here's my honest recommendation:

Start with LiGo's free Chrome extension. It provides:

• The best authenticity preservation of any tool tested (free or paid)
• Multi-platform support (LinkedIn, X, Reddit, Meta)
• Legitimate time savings (60-70% reduction in comment writing time)
• Zero financial risk to test if AI-assisted commenting fits your workflow
• Better engagement results than most paid alternatives

When to upgrade to paid tools:

• You need comprehensive content scheduling and LiGo's basic scheduling isn't enough (add Taplio)
• You're running sales sequences and need CRM integration (Waalaxy or Expandi)
• You already use Jasper for content and want commenting added to that workflow

Combination strategy: Many professionals use free LiGo for daily engagement while paying for specialized tools for other needs. This maximizes value without paying for overlapping features.

The goal isn't finding the most expensive tool. The goal is finding the tool that actually helps you engage authentically at scale. LiGo's free tier achieves that for most users better than paid alternatives.

Try LiGo Chrome Extension Free

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Related Resources

• How to Write LinkedIn Comments That Actually Get Replies (2025 Formula)
• Best LinkedIn Chrome Extensions for Engagement in 2025
• AI LinkedIn Writing: How to Keep Your Authentic Voice (Complete Guide)
• The 10 Worst LinkedIn Comment Mistakes (And How to Fix Them)
• 5 Ways to Automate LinkedIn Without Losing Authenticity