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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
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S
Pika
A
Rows
A
Genspark
A
TaglineRun any open-source AI model with an API call.The playful, accessible AI video tool.Spreadsheets with AI + live integrations baked in.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryDev PlatformVideoDataResearch
PricingPay per second of computeFree + $8-$58/moFree + $19-$89/user/moFree + $25/mo Plus
Best forDevelopers using open-source models (Flux, SDXL, Whisper, etc).Social media creators, beginners, anyone wanting quick fun clips.Ops teams, marketers, anyone building dashboards from multiple sources.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • Tens of thousands of models (image, video, audio, LLMs)
  • One-line API for any model
  • Cog framework for custom model deploy
  • Ingredients feature — combine people, objects, scenes
  • Lip sync + sound effects
  • Fun, approachable UX
  • Pull live data from Stripe, Slack, Google Analytics, etc.
  • AI functions inside cells
  • Modern UX
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
Weaknesses
  • Cold starts on less-popular models
  • Pricing gets real at scale
  • Lower fidelity than Runway/Kling
  • Still rough on complex scenes
  • Not a full Excel replacement for heavy users
  • Integrations best on paid tiers
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
Kai's verdictS-tier for open-source model APIs. The default in this space.A-tier for social/casual. B-tier for serious work. Good entry point.A-tier. The most interesting spreadsheet in years. Great for ops dashboards.A-tier. Bet on this one — the Sparkpage format is genuinely new.
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