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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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coding
image
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writing
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Lex
A
GitHub Copilot
B
OpenRouter
S
DALL-E 3
B
TaglineGoogle Docs with an AI collaborator baked in.Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.One API, every model. Pay-as-you-go, no subscriptions.OpenAI's image model. Built into ChatGPT Plus.
Categorywritingcodingdev platformimage
PricingFree + $12/moFree (limited) + $10/mo Pro + $19/mo BusinessPay per token — model-dependentIncluded with ChatGPT Plus $20/mo
Best forEssays, long-form drafts, thinking on the page.Teams with GitHub already. Devs who don't want to change IDEs.Developers experimenting across models. Apps that want fallback logic.ChatGPT Plus users who want images without paying extra.
Strengths
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Slight markup over direct API
  • Some provider features not exposed
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
Kai's verdictA-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for model-shopping. I use this for every prototype before committing.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
LinkOpen →Open →Open →Open →