Compare AI tools

	OpenRouter S	GitHub Copilot B	Suno S	Duolingo Max A
Tagline	One API, every model. Pay-as-you-go, no subscriptions.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Prompt to full song with vocals, instruments, the works.	Duolingo + AI. Explain My Answer + Roleplay features.
Category	Dev Platform	Coding	Audio	Education
Pricing	Pay per token — model-dependent	Free (limited) + $10/mo Pro + $19/mo Business	Free + $10/mo + $30/mo	$30/mo (or ~$168/yr)
Best for	Developers experimenting across models. Apps that want fallback logic.	Teams with GitHub already. Devs who don't want to change IDEs.	Jingles, intros, demos, sketches, personal use.	Language learners who've outgrown basic Duolingo.
Strengths	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	Real songs with real lyrics v4 is very good Quick turnaround	Explain My Answer = personal tutor for every mistake Roleplay = real conversation practice Gamification that actually sticks
Weaknesses	Slight markup over direct API Some provider features not exposed	Less agentic than Cursor/Claude Code Model quality varies	Copyright gray zone Audio quality behind studio	Pricey vs free Duolingo Conversation AI still stiff sometimes
Kai's verdict	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 in its category. The first AI music tool I'd actually listen to.	A-tier. If you already love Duolingo, worth it. If starting fresh, try ChatGPT Voice instead.
Link	Open →	Open →	Open →	Open →