Grammarly vs Copy.ai 2026: Writing Assistant vs AI Copywriter

Grammarly vs Copy.ai compared for writing quality, features, pricing, and use cases. Find the right AI writing tool.

Grammarly

★ 4.3

AI writing assistant for grammar, tone, and clarity.

Price: Free tier available $12/month
Model: freemium

Key Features

  • ✓ Grammar and spelling correction
  • ✓ Tone detection and adjustment
  • ✓ Clarity and conciseness suggestions
  • ✓ Generative AI text composition
  • ✓ Works in 500,000+ apps and websites
Full review → Visit site →

Copy.ai

★ 3.9

AI copywriting with sales and marketing automation.

Price: Free tier available $36/month
Model: freemium

Key Features

  • ✓ AI copywriting for ads, emails, social
  • ✓ Sales outreach automation
  • ✓ Workflow builder (Workflows AI)
  • ✓ 90+ copywriting templates
  • ✓ Brand voice customization
Full review → Visit site →

Use Case Breakdown

Grammar and Editing

Winner: Grammarly

Grammarly is the gold standard for grammar, spelling, punctuation, and clarity improvements.

Content Generation

Winner: Copy.ai

Copy.ai generates marketing copy, blog posts, and social content from scratch. Grammarly only edits existing text.

Tone and Style

Winner: Grammarly

Grammarly's tone detection and style suggestions are more nuanced and accurate.

Marketing Workflows

Winner: Copy.ai

Copy.ai has workflow automation for sales emails, content pipelines, and go-to-market campaigns.

Browser Integration

Winner: Grammarly

Grammarly works everywhere you type — browser, email, docs, social media. Copy.ai is a separate app.

Price

Winner: Copy.ai

Copy.ai's free tier offers 2,000 words/month. Grammarly Premium is $12/mo. Copy.ai Pro is $49/mo but generates content, not just edits.

Grammarly vs Copy.ai: The Complete Comparison

These tools do fundamentally different things. Grammarly improves writing you’ve already done. Copy.ai generates new writing from scratch. Many users benefit from both.

The quick take

Choose Grammarly if you write your own content and want it polished, clear, and error-free. Choose Copy.ai if you need AI to generate marketing copy, emails, and content from prompts. They’re complementary, not competitive.