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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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Genspark
A
HeyGen
S
Gemini
A
Devin
A
TaglineAI agent for deep search. Generates Sparkpages — full mini-reports.AI avatar videos. Record once, speak any language.Google's answer. Best integrated with Workspace + free for a lot.Cognition Labs' autonomous coding engineer.
CategoryResearchVideoChatbotsAgents
PricingFree + $25/mo PlusFree + $24-$65/moFree + $20/mo Advanced (bundled with 2TB Drive)$500/mo
Best forTravel planning, shopping comparisons, deep research where you want an artifact back.Course creators, multilingual marketers, anyone scaling video content.Anyone already on Google, research tasks, summarizing long documents.Engineering teams offloading tickets. Ops/platform work.
Strengths
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Clone your face + voice in 2 minutes
  • Instant translation into 40+ languages with lip sync
  • Avatars look less uncanny than competitors
  • Native Google Workspace integration
  • Very long context (1M+)
  • Deep Research feature
  • Free tier is generous
  • Works like an engineer — takes Slack tasks, opens PRs
  • Handles multi-hour engineering work
  • Reports back with what it did
Weaknesses
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Pricey for serious volume
  • Long shots still feel off
  • Ethics — easy to misuse
  • Writing quality trails Claude
  • Over-refusals on edge content
  • UI is cluttered
  • Expensive
  • Best for well-scoped tasks
  • Not for solo hobbyists
Kai's verdictA-tier. Bet on this one — the Sparkpage format is genuinely new.S-tier for multilingual video. If you sell courses or speak at events, this is a cheat code.A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google.A-tier for the right use case. Not for solo devs. If you manage engineers, try one license.
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