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)
Dev Platform
Coding
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Productivity
Writing
Marketing
Gemini A | Julius S | Suno S | NotebookLM S | |
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| Tagline | Google's answer. Best integrated with Workspace + free for a lot. | Chat with your data. Upload a CSV, ask questions, get charts. | Prompt to full song with vocals, instruments, the works. | Google's research notebook. Turns your docs into a podcast. |
| Category | Chatbots | Data | Audio | Research |
| Pricing | Free + $20/mo Advanced (bundled with 2TB Drive) | Free + $20-$65/mo | Free + $10/mo + $30/mo | Free |
| Best for | Anyone already on Google, research tasks, summarizing long documents. | Analysts, founders, anyone with a spreadsheet + a question. | Jingles, intros, demos, sketches, personal use. | Students, researchers, anyone with a stack of PDFs or a topic to learn. |
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| Kai's verdict | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | S-tier for ad-hoc analysis. Makes you feel like a data scientist in 30 seconds. | S-tier in its category. The first AI music tool I'd actually listen to. | S-tier for study. The Audio Overview is a killer feature. Try it with three of your favorite PDFs. |
| Link | Open → | Open → | Open → | Open → |