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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
Genspark
A
Claude Code
S
Fathom
S
TaglineOne API, every model. Pay-as-you-go, no subscriptions.AI agent for deep search. Generates Sparkpages — full mini-reports.Anthropic's CLI agent. Opus-powered, operates on your repo directly.Meeting notes, free forever for individuals.
CategoryDev PlatformResearchCodingMeetings
PricingPay per token — model-dependentFree + $25/mo PlusPart of Claude Pro/Max/Team plansFree for individuals + $15-$29/user/mo teams
Best forDevelopers experimenting across models. Apps that want fallback logic.Travel planning, shopping comparisons, deep research where you want an artifact back.Developers who want an agent, not autocomplete. Large refactors, tests, docs.Solo operators, freelancers, small teams on a budget.
Strengths
  • 300+ models from one endpoint
  • Automatic fallbacks between providers
  • No subscription — just pay what you use
  • Sparkpages = curated multi-source mini-articles
  • Agent can book, compare, shop
  • Autopilot agent for long tasks
  • Runs locally, edits your actual files
  • Strong on large codebases with 1M context
  • Great at multi-step tasks
  • Unlimited free tier for solo use
  • Strong summaries + action items
  • Works in Zoom, Meet, Teams
Weaknesses
  • Slight markup over direct API
  • Some provider features not exposed
  • Early-stage — rough edges
  • Less reliable than Perplexity for simple questions
  • Terminal-based — learning curve
  • Can't be used without Claude subscription
  • Bot-joining model
  • Team features gated
Kai's verdictS-tier for model-shopping. I use this for every prototype before committing.A-tier. Bet on this one — the Sparkpage format is genuinely new.S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.S-tier for solo + free. The best free option, hands down.
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