Compare AI tools

	GitHub Copilot B	OpenRouter S	Stable Audio A	Lex A
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	One API, every model. Pay-as-you-go, no subscriptions.	Stability AI's open audio model. Loops + SFX + background.	Google Docs with an AI collaborator baked in.
Category	coding	dev platform	audio	writing
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Pay per token — model-dependent	Free + $12/mo Pro + enterprise	Free + $12/mo
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Developers experimenting across models. Apps that want fallback logic.	Game developers, podcasters needing SFX, video creators needing background music.	Essays, long-form drafts, thinking on the page.
Strengths	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	Open-weight model available Great for loops + game audio + SFX Commercial-use clarity	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Slight markup over direct API Some provider features not exposed	Not for full songs with vocals Shorter generation limits	Less feature-rich than Google Docs AI ceiling below dedicated tools
Kai's verdict	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 for its niche. Different use case than Suno — SFX and loops, not songs.	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
Link	Open →	Open →	Open →	Open →