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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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DeepSeek
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Cursor
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Groq
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TaglineRun any open-source AI model with an API call.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.VS Code fork that made AI coding actually work.The fastest AI inference in the world. Crazy low latency.
CategoryDev PlatformChatbotsCodingDev Platform
PricingPay per second of computeFree web + ultra-cheap API (~$0.14/M input tokens)Free + $20/mo Pro + $40/mo BusinessFree tier + pay-as-you-go API
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Developers + cost-conscious builders. Anyone fine with self-hosting.Developers. Non-developers who want to ship working code.Developers who need sub-100ms LLM responses.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • 500+ tokens/sec on Llama/Mixtral — feels instant
  • Custom LPU hardware
  • Great free tier
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Open-weight models only (no Claude/GPT)
  • Less flexibility on custom configs
Kai's verdictS-tier for open-source model APIs. The default in this space.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for speed. When latency is the product, start here.
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