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
Claude Code S | Writesonic B | Sora A | Devin A | |
|---|---|---|---|---|
| Tagline | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | SEO-first AI writer. Optimized for ranking content. | OpenAI's video model. Long clips, cinematic quality. | Cognition Labs' autonomous coding engineer. |
| Category | coding | marketing | video | agents |
| Pricing | Part of Claude Pro/Max/Team plans | Free + $15-$99/mo | Included with ChatGPT Plus/Pro | $500/mo |
| Best for | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Content marketers churning out SEO articles. | ChatGPT subscribers experimenting with cinematic shots. | Engineering teams offloading tickets. Ops/platform work. |
| Strengths |
|
|
|
|
| Weaknesses |
|
|
|
|
| Kai's verdict | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | B-tier. Use Claude + manual SEO thinking. Writesonic is fast but generic. | A-tier. Amazing when it works, frustrating when it doesn't. Runway still more reliable for pros. | A-tier for the right use case. Not for solo devs. If you manage engineers, try one license. |
| Link | Open → | Open → | Open → | Open → |