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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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OpenRouter
S
Claude Code
S
Rows
A
Genspark
A
TaglineOne API, every model. Pay-as-you-go, no subscriptions.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Spreadsheets with AI + live integrations baked in.AI agent for deep search. Generates Sparkpages — full mini-reports.
CategoryDev PlatformCodingDataResearch
PricingPay per token — model-dependentPart of Claude Pro/Max/Team plansFree + $19-$89/user/moFree + $25/mo Plus
Best forDevelopers experimenting across models. Apps that want fallback logic.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Ops teams, marketers, anyone building dashboards from multiple sources.Travel planning, shopping comparisons, deep research where you want an artifact back.
Strengths
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • 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
  • Slight markup over direct API
  • Some provider features not exposed
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • 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 model-shopping. I use this for every prototype before committing.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.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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