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
Devin A | Replicate S | Gemini A | Descript S | |
|---|---|---|---|---|
| Tagline | Cognition Labs' autonomous coding engineer. | Run any open-source AI model with an API call. | Google's answer. Best integrated with Workspace + free for a lot. | Edit video + podcasts by editing the transcript. |
| Category | agents | dev platform | chat | video |
| Pricing | $500/mo | Pay per second of compute | Free + $20/mo Advanced (bundled with 2TB Drive) | Free + $16-$50/mo |
| Best for | Engineering teams offloading tickets. Ops/platform work. | Developers using open-source models (Flux, SDXL, Whisper, etc). | Anyone already on Google, research tasks, summarizing long documents. | Podcasters, course creators, anyone editing talking-head content. |
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| Kai's verdict | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. | S-tier for open-source model APIs. The default in this space. | A-tier. The Deep Research feature is genuinely useful. Don't sleep on it if you're already paying Google. | S-tier for content creators. Cuts editing time in half. Non-obvious but life-changing. |
| Link | Open → | Open → | Open → | Open → |