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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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TaglineRun any open-source AI model with an API call.The fastest AI inference in the world. Crazy low latency.VS Code fork that made AI coding actually work.
Categorydev platformdev platformcoding
PricingPay per second of computeFree tier + pay-as-you-go APIFree + $20/mo Pro + $40/mo Business
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers who need sub-100ms LLM responses.Developers. Non-developers who want to ship working code.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
  • Can feel overwhelming for non-coders
  • Expensive at scale
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for speed. When latency is the product, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.
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