Compare AI tools

	Cursor S	Claude Code S	DeepSeek S	Claude Agent SDK S
Tagline	VS Code fork that made AI coding actually work.	Anthropic's CLI agent. Opus-powered, operates on your repo directly.	Chinese open-weight powerhouse. Crazy cheap, genuinely smart.	Anthropic's SDK for building your own agents on Claude.
Category	coding	coding	chat	agents
Pricing	Free + $20/mo Pro + $40/mo Business	Part of Claude Pro/Max/Team plans	Free web + ultra-cheap API (~$0.14/M input tokens)	API usage + SDK is free
Best for	Developers. Non-developers who want to ship working code.	Developers who want an agent, not autocomplete. Large refactors, tests, docs.	Developers + cost-conscious builders. Anyone fine with self-hosting.	Developers building custom agents for their own company/product.
Strengths	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	Runs locally, edits your actual files Strong on large codebases with 1M context Great at multi-step tasks	Open weights you can self-host Strong reasoning + math Near-free API pricing DeepSeek-V3 / R1 are serious models	Production-grade agent primitives Built on Claude (best reasoning) Full control — build exactly what you need
Weaknesses	Can feel overwhelming for non-coders Expensive at scale	Terminal-based — learning curve Can't be used without Claude subscription	Data goes to servers in China — privacy concerns for business use Chinese policy filters English polish trails Western models	Developer-only You build the UI
Kai's verdict	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.	S-tier if you live in the terminal. Different shape than Cursor — complementary, not replacement.	S-tier for price/performance. A-tier for consumer use. If you build apps, this is the budget pick.	S-tier for builders. The right primitives. What Kai is built on under the hood.
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