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)
Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Le Chat (Mistral)
B
Lex
A
Grammarly
A
Perplexity
S
TaglineFrench alternative. Fast, European, privacy-focused.Google Docs with an AI collaborator baked in.Grammar check + tone + AI drafting, everywhere you type.AI search done right. Cited answers, not chat theater.
CategoryChatbotsWritingWritingResearch
PricingFree + $15/mo ProFree + $12/moFree + $12-$15/mo Premium + team plansFree + $20/mo Pro
Best forEuropean users with data residency needs. Fans of open-weight models.Essays, long-form drafts, thinking on the page.Non-native English writers, business email, anyone who types a lot.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • European data residency
  • Very fast responses
  • Open-weight Mistral models available
  • Good French/European languages
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Works in every browser/app
  • Now has generative AI (GrammarlyGO)
  • Tone detection + suggestions
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Smaller capability gap vs frontier models
  • Less polished UX
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Can feel naggy
  • Premium features gate basics
  • Privacy concerns (reads your writing)
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictB-tier overall, A-tier if GDPR/data residency matters. Solid backup option.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.A-tier for non-native English speakers. B-tier if your English is already strong — Claude does better with tone.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
LinkOpen →Open →Open →Open →