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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DeepSeek S | Stripe Link A | Claude Code S | Runway S | |
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| Tagline | Chinese open-weight powerhouse. Crazy cheap, genuinely smart. | A digital wallet that lets AI agents spend on your behalf — without ever seeing your actual card number. | Anthropic's CLI agent. Opus-powered, operates on your repo directly. | The pro's AI video tool. Gen-4 is the current bar. |
| Category | Chatbots | Agents | Coding | Video |
| Pricing | Free web + ultra-cheap API (~$0.14/M input tokens) | Free for consumers; standard Stripe per-transaction fees for merchants | Part of Claude Pro/Max/Team plans | Free + $15-$95/mo |
| Best for | Developers + cost-conscious builders. Anyone fine with self-hosting. | Anyone running autonomous AI agents (shopping bots, booking assistants, personal AI) who wants delegated payment capability without handing over raw card data. | Developers who want an agent, not autocomplete. Large refactors, tests, docs. | Marketing video, pitch decks, b-roll, creative shorts. |
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| Kai's verdict | S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick. | Stripe Link is the most credible first move toward a real agentic payment layer — the one-time-use card model is genuinely clever, and the existing merchant network gives it a head start no startup wallet can match. But the 'approve every transaction' UX will get old fast, and the hard part (autonomous spending with guardrails) is still on the roadmap. (Verdict pending Phi's full review.) | S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement. | S-tier. Market leader with reason. Start here for serious video. |
| Link | Open → | Open → | Open → | Open → |