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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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Windsurf
A
Qwen
A
Perplexity
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Alibaba's open chat model. Multilingual + agentic.AI search done right. Cited answers, not chat theater.
Categorycodingchatresearch
PricingFree + $15/mo ProFree web + APIFree + $20/mo Pro
Best forDevelopers who want Cursor-like power for less money.Vietnamese/Chinese content, SEA multilingual use, developers wanting open-weight tool-use.Replacing Google for any question where you want a cited answer in seconds.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Excellent Chinese + Vietnamese + SEA languages
  • Strong at tool-use + agentic workflows
  • Open weights (Qwen2.5, Qwen3)
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
Weaknesses
  • Smaller community
  • Model selection more limited
  • English quality behind Claude/GPT
  • Less well-known outside Asia
  • Not a general chatbot
  • Answers can be shallow on complex topics
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.A-tier. The best open model for Vietnamese + Chinese. Don't sleep on it if you work in SEA.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.
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