Compare AI tools

	Cursor S	OpenRouter S	GitHub Copilot B	Kling A
Tagline	VS Code fork that made AI coding actually work.	One API, every model. Pay-as-you-go, no subscriptions.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Kuaishou's video model. The surprise standout.
Category	coding	dev platform	coding	video
Pricing	Free + $20/mo Pro + $40/mo Business	Pay per token — model-dependent	Free (limited) + $10/mo Pro + $19/mo Business	Credit-based, free trial
Best for	Developers. Non-developers who want to ship working code.	Developers experimenting across models. Apps that want fallback logic.	Teams with GitHub already. Devs who don't want to change IDEs.	Anyone who wants top-tier video quality for less.
Strengths	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use	Great enterprise story Works in your existing IDE Chat + autocomplete	Very strong motion + physics Often beats Runway on realism Great price
Weaknesses	Can feel overwhelming for non-coders Expensive at scale	Slight markup over direct API Some provider features not exposed	Less agentic than Cursor/Claude Code Model quality varies	UX is rough for English speakers Queue times
Kai's verdict	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.	S-tier for model-shopping. I use this for every prototype before committing.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	A-tier. Rising fast. If you can tolerate the UX, quality per dollar is best-in-class.
Link	Open →	Open →	Open →	Open →