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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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Chatbots
Research
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Image
Video
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Meetings
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Productivity
Audio
Writing
Agents
Dev Platform
Data
Marketing
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Replicate
S
Perplexity
S
DALL-E 3
B
Sudowrite
S
TaglineRun any open-source AI model with an API call.AI search done right. Cited answers, not chat theater.OpenAI's image model. Built into ChatGPT Plus.AI writing tool built specifically for fiction writers.
CategoryDev PlatformResearchImageWriting
PricingPay per second of computeFree + $20/mo ProIncluded with ChatGPT Plus $20/mo$19-$59/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Replacing Google for any question where you want a cited answer in seconds.ChatGPT Plus users who want images without paying extra.Novelists, screenwriters, fiction short-form writers.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
  • Brainstorm, expand, rewrite modes designed for fiction
  • Story Bible for character + plot tracking
  • Understands voice + tone better than generic chatbots
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
  • Pricey for casual use
  • Fiction-only focus — not for business writing
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.S-tier for fiction. If you're writing a novel, this beats raw ChatGPT every time.
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