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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
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Coding
Image
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Meetings
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Replicate
S
Gemini
A
Claude Code
S
Claude Agent SDK
S
TaglineRun any open-source AI model with an API call.Google's answer. Best integrated with Workspace + free for a lot.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Anthropic's SDK for building your own agents on Claude.
CategoryDev PlatformChatbotsCodingAgents
PricingPay per second of computeFree + $20/mo Advanced (bundled with 2TB Drive)Part of Claude Pro/Max/Team plansAPI usage + SDK is free
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Anyone already on Google, research tasks, summarizing long documents.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Developers building custom agents for their own company/product.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Developer-only
  • You build the UI
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for builders. The right primitives. What Kai is built on under the hood.
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