Best AI Writing Tools for Mac
A comparison of AI writing tools on Mac: from dedicated writing apps to general-purpose AI assistants with clipboard workflows.
Writing with AI on Mac ranges from dedicated writing apps to general-purpose AI assistants. Here is what is available and how to choose the right approach for your writing workflow.
Dedicated AI Writing Apps
Grammarly
Price: Free / Premium $12/mo / Business $15/mo Integration: Browser extension, Mac app, Office plugins
Grammarly focuses on grammar, clarity, and tone. Its AI suggestions appear inline as you write in supported apps.
Best for: Grammar correction, tone adjustment, and clarity improvements across apps.
Limitation: Focused on editing, not generating. Limited to English. The AI generation features are basic compared to GPT or Claude.
Notion AI
Price: Included with Notion ($8-10/mo plans + $8/mo AI add-on) Integration: Within Notion only
Notion’s AI works within its workspace: summarize pages, generate content, translate, and rewrite text.
Best for: Notion users who want AI integrated into their existing workspace.
Limitation: Only works in Notion. If you write in other apps, this does not help.
Apple Intelligence Writing Tools
Price: Free (built into macOS) Integration: System-wide in supported apps
Apple’s built-in writing tools offer rewrite, proofread, and summarize in any app that uses the standard macOS text system.
Best for: Quick rewrites and proofreading without installing anything.
Limitation: Limited AI capability. Cannot generate content from scratch, limited style options, no model choice.
General-Purpose AI for Writing
ChatGPT
Price: Free / Plus $20/mo
GPT is capable at most writing tasks: drafting emails, blog posts, marketing copy, and technical documentation. The interface is conversational.
Best for: Generating first drafts, brainstorming, and structured content.
Limitation: Separate app with its own window. You write in ChatGPT, then copy the result to where you actually need it.
Claude
Price: Free / Pro $20/mo
Claude produces arguably the most natural-sounding prose among major AI models. It follows instructions carefully and handles nuance well.
Best for: High-quality prose, nuanced writing, long-form content.
Limitation: Same as ChatGPT: a separate window, separate workflow.
Chapeta
Price: Free download / Pro $8/mo / BYOK $29.99 one-time Models: 300+ including Claude and GPT
Chapeta’s approach to writing is different from dedicated writing apps. Instead of replacing your writing environment, it augments it:
- Write in your preferred app (Pages, VS Code, Bear, Ulysses, anything)
- Select text and copy it
- Press Chapeta’s hotkey
- Ask: “Improve this writing” or “Make this more concise” or “Fix grammar”
- The improved text is written to your clipboard
- Paste it back
This clipboard workflow works with every app on your Mac. No plugins, no integrations, no supported-app list. If you can copy and paste, you can use AI writing assistance.
Best for: Writers who want AI assistance in any app without changing their workflow.
Limitation: Not inline (you do not see suggestions as you type). Requires the copy-process-paste loop.
Choosing by Writing Type
| Writing Type | Best Tool |
|---|---|
| Grammar and clarity | Grammarly |
| Within Notion | Notion AI |
| Quick system-wide rewrites | Apple Intelligence |
| Long-form drafting | Claude (via Chapeta) |
| Email and business writing | GPT (via Chapeta) |
| Technical documentation | GPT or Claude |
| Any-app AI writing | Chapeta clipboard workflow |
The Model Matters for Writing
Different AI models produce different writing styles. With Chapeta’s model switching, you can use the best model for each piece:
- Claude: Natural, warm prose. Great for articles and creative content
- GPT: Structured, professional. Good for business writing and documentation
- Smaller models: Fast and cheap for simple rewrites and grammar fixes
The Practical Approach
Most writers do not need a dedicated AI writing app. The combination of your existing writing tool plus a general-purpose AI assistant (accessible via hotkey) covers most scenarios. Write where you are comfortable, use AI to improve, and spend your money on the model quality rather than on yet another writing application.