KaiAI tutor for anyone

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)
chat
research
coding
image
video
voice
meeting
design
productivity
audio
writing
agents
dev platform
data
marketing
education
Windsurf
A
Cursor
S
Grammarly
A
Gemini
A
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.VS Code fork that made AI coding actually work.Grammar check + tone + AI drafting, everywhere you type.Google's answer. Best integrated with Workspace + free for a lot.
Categorycodingcodingwritingchat
PricingFree + $15/mo ProFree + $20/mo Pro + $40/mo BusinessFree + $12-$15/mo Premium + team plansFree + $20/mo Advanced (bundled with 2TB Drive)
Best forDevelopers who want Cursor-like power for less money.Developers. Non-developers who want to ship working code.Non-native English writers, business email, anyone who types a lot.Anyone already on Google, research tasks, summarizing long documents.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
Weaknesses
  • Smaller community
  • Model selection more limited
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.
LinkOpen →Open →Open →Open →