Compare AI tools

	Duolingo Max A	OpenRouter S	GitHub Copilot B	Claude S
Tagline	Duolingo + AI. Explain My Answer + Roleplay features.	One API, every model. Pay-as-you-go, no subscriptions.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Anthropic's flagship — best reasoning + longest useful context.
Category	Education	Dev Platform	Coding	Chatbots
Pricing	$30/mo (or ~$168/yr)	Pay per token — model-dependent	Free (limited) + $10/mo Pro + $19/mo Business	Free + $20/mo Pro + team/enterprise
Best for	Language learners who've outgrown basic Duolingo.	Developers experimenting across models. Apps that want fallback logic.	Teams with GitHub already. Devs who don't want to change IDEs.	Long writing, code, careful thinking, documents over 50 pages.
Strengths	Explain My Answer = personal tutor for every mistake Roleplay = real conversation practice Gamification that actually sticks	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	Best-in-class writing + nuanced reasoning 1M context on Opus Artifacts for code/docs Lowest hallucination rate in my testing
Weaknesses	Pricey vs free Duolingo Conversation AI still stiff sometimes	Slight markup over direct API Some provider features not exposed	Less agentic than Cursor/Claude Code Model quality varies	Image generation is weak No native web search on all tiers
Kai's verdict	A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.	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.	S-tier for reasoning and writing. If you only pay for one chatbot, pay for this one — especially for long work.
Link	Open →	Open →	Open →	Open →