Compare AI tools
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 | GitHub Copilot B | Elicit S | Fathom S | |
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| Tagline | AI agent for deep search. Generates Sparkpages — full mini-reports. | Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration. | AI research assistant for academic literature. | Meeting notes, free forever for individuals. |
| Category | Research | Coding | Research | Meetings |
| Pricing | Free + $25/mo Plus | Free (limited) + $10/mo Pro + $19/mo Business | Free + $12-$42/mo | Free for individuals + $15-$29/user/mo teams |
| Best for | Travel planning, shopping comparisons, deep research where you want an artifact back. | Teams with GitHub already. Devs who don't want to change IDEs. | Grad students, researchers, anyone doing literature reviews. | Solo operators, freelancers, small teams on a budget. |
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| Kai's verdict | A-tier. Bet on this one — the Sparkpage format is genuinely new. | B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't. | S-tier for academic research. Nothing else comes close for systematic reviews. | S-tier for solo + free. The best free option, hands down. |
| Link | Open → | Open → | Open → | Open → |