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Side-by-side: what they do, what they cost, what Kai actually thinks. Pass up to 4 tools via ?tools=claude,chatgpt,gemini.
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Lex
A
Claude
S
DALL-E 3
B
Claude Code
S
TaglineGoogle Docs with an AI collaborator baked in.Anthropic's flagship — best reasoning + longest useful context.OpenAI's image model. Built into ChatGPT Plus.Anthropic's CLI agent. Opus-powered, operates on your repo directly.
CategoryWritingChatbotsImageCoding
PricingFree + $12/moFree + $20/mo Pro + team/enterpriseIncluded with ChatGPT Plus $20/moPart of Claude Pro/Max/Team plans
Best forEssays, long-form drafts, thinking on the page.Long writing, code, careful thinking, documents over 50 pages.ChatGPT Plus users who want images without paying extra.Developers who want an agent, not autocomplete. Large refactors, tests, docs.
Strengths
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
Weaknesses
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Image generation is weak
  • No native web search on all tiers
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
Kai's verdictA-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.
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