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Grammarly logoGrammarly
vs
Kerlig logoKerlig

Grammarly vs Kerlig: Which is Better in 2026?

A comprehensive comparison of Grammarly and Kerlig covering features, pricing, use cases, and which tool is the right choice for your needs.

⚡ Quick Verdict

Choose Grammarly if:

  • You want a free tier to get started without commitment
  • You want more affordable paid plans (from $12/mo)
  • You need grammar and spelling or tone detection

Choose Kerlig if:

  • You need a broader feature set (7 features vs 6)
  • You need global hotkey invocation over any macos app or built-in and fully custom actions

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If you're building an AI tool, run a free AI-visibility scan on your own product — we ask ChatGPT across 5 prompt angles and score how often you get named. ~30 seconds, no signup, no card.

Grammarly vs Kerlig: At a Glance

Attribute
Grammarly
Kerlig
Pricing Model
Freemium
Paid
Starting Price
Free plan + paid from $12/month
Starting at $49/month
Free Tier
✓ Yes
✗ No
Category
Writing & Content
Writing & Content
Features Count
6 features
7 features
Shared Features
0 features in common

Pricing Comparison: Grammarly vs Kerlig

Understanding the pricing differences between Grammarly and Kerlig is crucial for making the right choice. Here's how their plans compare side by side.

Grammarly Pricing

Free$0forever
Premium$12/month
Business$15/user/month
EnterpriseCustom
View full Grammarly pricing →

Kerlig Pricing

One-time licences, currently discounted from list: Basic$49/month
Pro$79/month
Team$297/month
the current promotion advertises lifetime updatesSee website
Token costs are separate — you supply your own provider keys.See website
View full Kerlig pricing →

💡 Pricing takeaway: Grammarly has an edge with a free tier, letting you start without commitment. Compare the specific plans to find the best value for your use case.

Feature-by-Feature Comparison

Here's how every feature from Grammarly and Kerlig stacks up.

Feature
Grammarly
Kerlig
Grammar and spelling
Tone detection
Clarity suggestions
Plagiarism checker
Browser extension
Desktop app
Global hotkey invocation over any macOS app
Built-in and fully custom actions
Tone-of-voice personalisation
Chat with documents, web pages, ebooks and images
Deep research with citations via reasoning models
350+ models BYOK plus Apple Foundation Models, Ollama and LM Studio
Headless mode and CLI team deployment

What Makes Each Tool Unique

🔵 Unique to Grammarly

Features available in Grammarly but not in Kerlig:

  • Grammar and spelling
  • Tone detection
  • Clarity suggestions
  • Plagiarism checker
  • Browser extension
  • Desktop app

🟣 Unique to Kerlig

Features available in Kerlig but not in Grammarly:

  • Global hotkey invocation over any macOS app
  • Built-in and fully custom actions
  • Tone-of-voice personalisation
  • Chat with documents, web pages, ebooks and images
  • Deep research with citations via reasoning models
  • 350+ models BYOK plus Apple Foundation Models, Ollama and LM Studio
  • Headless mode and CLI team deployment

Use Case Recommendations

Best for: Grammarly

AI-powered writing assistant that improves grammar, clarity, tone, and style. Grammarly provides real-time suggestions across all your apps and websites, with advanced features for tone detection and plagiarism checking.

Ideal use cases:

  • Teams or individuals who need grammar and spelling
  • Teams or individuals who need tone detection
  • Teams or individuals who need clarity suggestions
  • Teams or individuals who need plagiarism checker
  • Anyone focused on grammar workflows
  • Anyone focused on writing workflows
Try Grammarly

Best for: Kerlig

Kerlig is a macOS writing assistant that works inside whatever application you are already in rather than asking you to paste text into a separate window. A global hotkey (option-space by default) opens it over any app, so proofreading a Slack reply, rewriting an email, tightening a Jira ticket or converting a blob of JSON into a TypeScript interface all happen without a context switch. It ships built-in actions — proofread, improve, summarise, shorten, simplify — and lets you write your own, including specialised personas, so recurring tasks become one keystroke. A tone-of-voice setting keeps rewrites sounding like you instead of like a model. It reads attachments, so you can chat with documents, web pages, ebooks and images, and a deep-research mode drives reasoning models through multi-step research against online sources with citations you can open. Models are entirely bring-your-own-key across more than 350 options from OpenAI, Anthropic, Google, Groq, Perplexity and OpenRouter, plus local execution through Apple Foundation Models, Ollama and LM Studio, which means messages go directly from your Mac to the provider and history stays encrypted locally. There is a headless mode for background actions and CLI-based deployment for teams. The licence is a one-time purchase, so the only recurring cost is your own token spend.

Ideal use cases:

  • Teams or individuals who need global hotkey invocation over any macos app
  • Teams or individuals who need built-in and fully custom actions
  • Teams or individuals who need tone-of-voice personalisation
  • Teams or individuals who need chat with documents, web pages, ebooks and images
  • Anyone focused on macos workflows
  • Anyone focused on byok workflows
Try Kerlig

✍️ Other Writing & Content Tools to Consider

Grammarly and Kerlig aren't the only options. Here are other popular tools in the same space:

🏷️

Is one of these your tool?

This page ranks for "Grammarly vs Kerlig" — buyers comparing the two land here, and ChatGPT and Perplexity cite it. Claim your listing for $19 one-time — no subscription, nothing to cancel — and get a Featured badge, top placement in your category, and a permanent dofollow backlink. Prefer it ongoing? Monthly is one click away on the next page.

Frequently Asked Questions

Is Grammarly better than Kerlig?

It depends on your needs. Grammarly offers 6 key features including Grammar and spelling and Tone detection, while Kerlig provides 7 features including Global hotkey invocation over any macOS app and Built-in and fully custom actions. Grammarly uses a freemium model with a free tier, while Kerlig is paid. Choose based on which features and pricing model align with your requirements.

Is Grammarly cheaper than Kerlig?

Grammarly is cheaper, starting at $12/month compared to Kerlig's $49/month. Grammarly offers a free tier, making it easier to get started. Always check the official websites for the most current pricing.

Can I use Grammarly and Kerlig together?

Yes, many users combine Grammarly and Kerlig in their workflow. Grammarly excels at grammar and spelling, while Kerlig shines with global hotkey invocation over any macos app. Using both allows you to leverage the strengths of each tool, though this means managing two subscriptions — though free tiers can help manage costs.

What's the main difference between Grammarly and Kerlig?

While both are writing & content tools, Grammarly emphasizes grammar and spelling, whereas Kerlig is known for global hotkey invocation over any macos app. The best choice depends on your specific workflow and feature priorities.

Learn More

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