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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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Replicate
S
Claude
S
Gemini
A
DALL-E 3
B
TaglineRun any open-source AI model with an API call.Anthropic's flagship — best reasoning + longest useful context.Google's answer. Best integrated with Workspace + free for a lot.OpenAI's image model. Built into ChatGPT Plus.
CategoryDev PlatformChatbotsChatbotsImage
PricingPay per second of computeFree + $20/mo Pro + team/enterpriseFree + $20/mo Advanced (bundled with 2TB Drive)Included with ChatGPT Plus $20/mo
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Long writing, code, careful thinking, documents over 50 pages.Anyone already on Google, research tasks, summarizing long documents.ChatGPT Plus users who want images without paying extra.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Excellent prompt understanding
  • Built into ChatGPT — no extra subscription
  • Good at composition + concepts
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Image generation is weak
  • No native web search on all tiers
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Aesthetic ceiling below Midjourney + Ideogram
  • Text rendering worse than Ideogram
  • No fine control
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.B-tier standalone, A-tier value if you already pay ChatGPT. Don't pay for it separately.
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