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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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GitHub Copilot
B
DeepSeek
S
Fathom
S
Claude
S
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Chinese open-weight powerhouse. Crazy cheap, genuinely smart.Meeting notes, free forever for individuals.Anthropic's flagship — best reasoning + longest useful context.
Categorycodingchatmeetingchat
PricingFree (limited) + $10/mo Pro + $19/mo BusinessFree web + ultra-cheap API (~$0.14/M input tokens)Free for individuals + $15-$29/user/mo teamsFree + $20/mo Pro + team/enterprise
Best forTeams with GitHub already. Devs who don't want to change IDEs.Developers + cost-conscious builders. Anyone fine with self-hosting.Solo operators, freelancers, small teams on a budget.Long writing, code, careful thinking, documents over 50 pages.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Open weights you can self-host
  • Strong reasoning + math
  • Near-free API pricing
  • DeepSeek-V3 / R1 are serious models
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
  • Best-in-class writing + nuanced reasoning
  • 1M context on Opus
  • Artifacts for code/docs
  • Lowest hallucination rate in my testing
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • Data goes to servers in China — privacy concerns for business use
  • Chinese policy filters
  • English polish trails Western models
  • Bot-joining model
  • Team features gated
  • Image generation is weak
  • No native web search on all tiers
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.S-tier for solo + free. The best free option, hands down.S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.
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