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.
Pick tools (4 selected)
Coding
Image
Productivity
Writing
Marketing
Hex A | Ideogram S | Symphony A | Elicit S | |
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| Tagline | Modern data notebook with Magic AI assistant. | The one that actually gets text in images right. | OpenAI's open-source daemon that turns your Linear board into an always-on coding agent factory — tickets go in, pull requests come out. | AI research assistant for academic literature. |
| Category | Data | Image | Agents | Research |
| Pricing | Free + $28+/user/mo | Free + $8/mo + $20/mo + $60/mo | Free (open-source) | Free + $12-$42/mo |
| Best for | Data teams at startups + enterprises. | Anything with text — posters, ads, album covers, slide decks. | Engineering teams already using Linear + OpenAI Codex who want to stop babysitting agent sessions and instead let the issue tracker drive autonomous coding at scale. | Grad students, researchers, anyone doing literature reviews. |
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| Kai's verdict | A-tier for data teams. S-tier if you already live in SQL + Python. | S-tier for text-in-image. Use this for posters, Midjourney for art. | Symphony is the most architecturally serious 'issue tracker as control plane' approach yet — 15K GitHub stars in weeks confirms the idea resonates — but it's still a rough, self-hosted engineering preview that demands Elixir chops and a Linear-only workflow. (Verdict pending Phi's full review.) | S-tier for academic research. Nothing else comes close for systematic reviews. |
| Link | Open → | Open → | Open → | Open → |