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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
NotebookLM
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.Alibaba's open chat model. Multilingual + agentic.Google's research notebook. Turns your docs into a podcast.
Categorycodingchatresearch
PricingFree + $15/mo ProFree web + APIFree
Best forDevelopers who want Cursor-like power for less money.Vietnamese/Chinese content, SEA multilingual use, developers wanting open-weight tool-use.Students, researchers, anyone with a stack of PDFs or a topic to learn.
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)
  • Upload anything, ask questions, get cited answers
  • Audio Overview turns docs into a 10-min podcast
  • Great for studying
Weaknesses
  • Smaller community
  • Model selection more limited
  • English quality behind Claude/GPT
  • Less well-known outside Asia
  • Google-only
  • Can be slow on large corpora
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 study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs.
LinkOpen →Open →Open →