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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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TaglineOpen-source VS Code agent. Reads + writes + runs.xAI's chatbot. Real-time X/Twitter data + fewer refusals.AI search done right. Cited answers, not chat theater.Run any open-source AI model with an API call.
CategoryCodingChatbotsResearchDev Platform
PricingFree (open source) + your API costsFree + $30/mo SuperGrok + included with X PremiumFree + $20/mo ProPay per second of compute
Best forVS Code users who want agentic coding without changing IDEs.Breaking news, live event tracking, users already on X.Replacing Google for any question where you want a cited answer in seconds.Developers using open-source models (Flux, SDXL, Whisper, etc).
Strengths
  • Free extension for VS Code
  • Plan + Act modes
  • Model-agnostic (Claude, GPT, local)
  • Sees terminal output and iterates
  • Live access to X posts for real-time events
  • Less restrictive on edgy questions
  • Fast inference on Grok-3 and up
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Can burn tokens fast if not watched
  • Less polished than Cursor
  • Writing quality trails Claude/ChatGPT
  • Political bias debates
  • Ecosystem is just X
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Cold starts on less-popular models
  • Pricing gets real at scale
Kai's verdictA-tier. Best free agentic option in VS Code. Use with Claude for best results.A-tier for real-time. B-tier for everything else. Worth checking when news breaks.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier for open-source model APIs. The default in this space.
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