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Compare AI tools

Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
Pick tools (4 selected)
Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Grammarly
A
GitHub Copilot
B
Copy.ai
A
MagicSchool
S
TaglineGrammar check + tone + AI drafting, everywhere you type.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.AI GTM platform. Workflows for sales + marketing ops.AI platform built for teachers. Lesson plans + IEPs + admin.
CategoryWritingCodingMarketingEducation
PricingFree + $12-$15/mo Premium + team plansFree (limited) + $10/mo Pro + $19/mo BusinessFree + $49-$249/moFree + $100/yr Plus + school plans
Best forNon-native English writers, business email, anyone who types a lot.Teams with GitHub already. Devs who don't want to change IDEs.RevOps + marketing ops automating repetitive tasks.Teachers prepping materials. School districts.
Strengths
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Workflow builder for GTM automations
  • CRM enrichment + outbound sequences
  • Scales better than ad-hoc prompts
  • 60+ teacher-specific tools
  • Generous free tier
  • FERPA + COPPA compliant for schools
Weaknesses
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Overlaps with general chatbots
  • Workflow setup takes time
  • Teacher-only focus
  • Less useful for students
Kai's verdictA-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier for ops automation. B-tier for simple copy (use Claude).S-tier for teachers. If you teach K-12, start here this week.
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