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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
Replicate
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Alibaba's open chat model. Multilingual + agentic.Run any open-source AI model with an API call.
Categorycodingchatdev platform
PricingFree + $15/mo ProFree web + APIPay per second of compute
Best forDevelopers who want Cursor-like power for less money.Vietnamese/Chinese content, SEA multilingual use, developers wanting open-weight tool-use.Developers using open-source models (Flux, SDXL, Whisper, etc).
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)
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
Weaknesses
  • Smaller community
  • Model selection more limited
  • English quality behind Claude/GPT
  • Less well-known outside Asia
  • Cold starts on less-popular models
  • Pricing gets real at scale
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 open-source model APIs. The default in this space.
LinkOpen →Open →Open →