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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
Cursor
S
Fathom
S
Claude Agent SDK
S
TaglineCodeium's agentic IDE. Cascade agent + strong free tier.VS Code fork that made AI coding actually work.Meeting notes, free forever for individuals.Anthropic's SDK for building your own agents on Claude.
Categorycodingcodingmeetingagents
PricingFree + $15/mo ProFree + $20/mo Pro + $40/mo BusinessFree for individuals + $15-$29/user/mo teamsAPI usage + SDK is free
Best forDevelopers who want Cursor-like power for less money.Developers. Non-developers who want to ship working code.Solo operators, freelancers, small teams on a budget.Developers building custom agents for their own company/product.
Strengths
  • Cheaper than Cursor
  • Cascade agent for multi-file tasks
  • Solid free tier
  • Tab completion feels like mind-reading
  • Composer for multi-file edits
  • Runs Claude, GPT, Gemini — you pick
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Production-grade agent primitives
  • Built on Claude (best reasoning)
  • Full control — build exactly what you need
Weaknesses
  • Smaller community
  • Model selection more limited
  • Can feel overwhelming for non-coders
  • Expensive at scale
  • Bot-joining model
  • Team features gated
  • Developer-only
  • You build the UI
Kai's verdictA-tier. Close second to Cursor. If $5/mo matters, start here.S-tier for coding. If you write code of any kind, this pays back the $20 in a day.S-tier for solo + free. The best free option, hands down.S-tier for builders. The right primitives. What Kai is built on under the hood.
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