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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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Dev Platform
Agents
Voice
Video
Audio
Research
Coding
Chatbots
Image
Meetings
Design
Productivity
Writing
Data
Marketing
Education
Devin
A
Lex
A
Perplexity
S
Granola
S
TaglineCognition Labs' autonomous coding engineer.Google Docs with an AI collaborator baked in.AI search done right. Cited answers, not chat theater.Meeting notes that don't suck. Runs locally, no bot joins.
CategoryAgentsWritingResearchMeetings
Pricing$500/moFree + $12/moFree + $20/mo ProFree + $18/mo
Best forEngineering teams offloading tickets. Ops/platform work.Essays, long-form drafts, thinking on the page.Replacing Google for any question where you want a cited answer in seconds.Founders, execs, consultants who live in calls.
Strengths
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
  • Clean writing UX — distraction-free
  • +++ prompt triggers AI help
  • Collaboration + AI feedback together
  • Sources every claim
  • Fast, current answers
  • Pro Search runs multi-step research
  • Spaces for persistent context
  • No bot in the call — runs on your Mac
  • Strong templates
  • Fast summaries
Weaknesses
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
  • Less feature-rich than Google Docs
  • AI ceiling below dedicated tools
  • Not a general chatbot
  • Answers can be shallow on complex topics
  • Mac-only
  • Single-user by design
Kai's verdictA-tier for the right use case. Not for solo devs. If you manage engineers, try one license.A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.S-tier for search. I use it before Google now. If you're still Googling everything, try this for a week.S-tier. Category-defining UX. If you take notes in meetings, switch this week.
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