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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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chat
research
coding
image
video
voice
meeting
design
productivity
audio
writing
agents
dev platform
data
marketing
education
GitHub Copilot
B
Kling
A
Devin
A
Writesonic
B
TaglineMicrosoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.Kuaishou's video model. The surprise standout.Cognition Labs' autonomous coding engineer.SEO-first AI writer. Optimized for ranking content.
Categorycodingvideoagentsmarketing
PricingFree (limited) + $10/mo Pro + $19/mo BusinessCredit-based, free trial$500/moFree + $15-$99/mo
Best forTeams with GitHub already. Devs who don't want to change IDEs.Anyone who wants top-tier video quality for less.Engineering teams offloading tickets. Ops/platform work.Content marketers churning out SEO articles.
Strengths
  • Great enterprise story
  • Works in your existing IDE
  • Chat + autocomplete
  • Very strong motion + physics
  • Often beats Runway on realism
  • Great price
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • SEO built-in (Surfer integration)
  • Article generator for long-form
  • Chatsonic for research
Weaknesses
  • Less agentic than Cursor/Claude Code
  • Model quality varies
  • UX is rough for English speakers
  • Queue times
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Output quality behind Claude for polish
  • SEO automation can produce generic content
Kai's verdictB-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic.
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