Compare AI tools

	OpenRouter S	GitHub Copilot B	Flux (Black Forest Labs) A	Lex A
Tagline	One API, every model. Pay-as-you-go, no subscriptions.	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	Open weights + strong photorealism. The open-source answer.	Google Docs with an AI collaborator baked in.
Category	dev platform	coding	image	writing
Pricing	Pay per token — model-dependent	Free (limited) + $10/mo Pro + $19/mo Business	API + open weights (Schnell is Apache 2.0)	Free + $12/mo
Best for	Developers experimenting across models. Apps that want fallback logic.	Teams with GitHub already. Devs who don't want to change IDEs.	Developers + power users who want control and privacy.	Essays, long-form drafts, thinking on the page.
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	Runs locally on a beefy GPU Very photoreal Best open-weight model	Clean writing UX — distraction-free +++ prompt triggers AI help Collaboration + AI feedback together
Weaknesses	Slight markup over direct API Some provider features not exposed	Less agentic than Cursor/Claude Code Model quality varies	Harder to use than hosted tools Needs infra	Less feature-rich than Google Docs AI ceiling below dedicated tools
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.	A-tier. S-tier if you self-host. The reason open-source image gen matters.	A-tier. Beautiful UX. The writing app I'd pick if I only wrote long-form.
Link	Open →	Open →	Open →	Open →