Compare AI tools

	Cursor S	GitHub Copilot B	OpenRouter S	Duolingo Max A
Tagline	VS Code fork that made AI coding actually work.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	One API, every model. Pay-as-you-go, no subscriptions.	Duolingo + AI. Explain My Answer + Roleplay features.
Category	coding	coding	dev platform	education
Pricing	Free + $20/mo Pro + $40/mo Business	Free (limited) + $10/mo Pro + $19/mo Business	Pay per token — model-dependent	$30/mo (or ~$168/yr)
Best for	Developers. Non-developers who want to ship working code.	Teams with GitHub already. Devs who don't want to change IDEs.	Developers experimenting across models. Apps that want fallback logic.	Language learners who've outgrown basic Duolingo.
Strengths	Tab completion feels like mind-reading Composer for multi-file edits Runs Claude, GPT, Gemini — you pick	Great enterprise story Works in your existing IDE Chat + autocomplete	300+ models from one endpoint Automatic fallbacks between providers No subscription — just pay what you use	Explain My Answer = personal tutor for every mistake Roleplay = real conversation practice Gamification that actually sticks
Weaknesses	Can feel overwhelming for non-coders Expensive at scale	Less agentic than Cursor/Claude Code Model quality varies	Slight markup over direct API Some provider features not exposed	Pricey vs free Duolingo Conversation AI still stiff sometimes
Kai's verdict	S-tier for coding. If you write code of any kind, this pays back the $20 in a day.	B-tier. Solid for autocomplete but the category moved past it. Pick Cursor unless you can't.	S-tier for model-shopping. I use this for every prototype before committing.	A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.
Link	Open →	Open →	Open →	Open →