Compare AI tools

	GitHub Copilot B	OpenRouter S	Galileo AI B	Cartesia S
Tagline	Microsoft/GitHub's autocomplete. Deep VS Code + JetBrains integration.	One API, every model. Pay-as-you-go, no subscriptions.	Prompt to UI design. Figma-ready outputs.	Ultra-low-latency voice. Built for realtime agents.
Category	Coding	Dev Platform	Design	Voice
Pricing	Free (limited) + $10/mo Pro + $19/mo Business	Pay per token — model-dependent	Free trial + paid plans	Free tier + usage-based API
Best for	Teams with GitHub already. Devs who don't want to change IDEs.	Developers experimenting across models. Apps that want fallback logic.	Designers brainstorming first drafts.	Developers building voice agents, phone bots, interactive apps.
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	Prompt-to-UI with real layouts Exports to Figma Faster than hand-designing from scratch	< 90ms latency — the fastest in the market Sonic model sounds natural Developer-friendly API
Weaknesses	Less agentic than Cursor/Claude Code Model quality varies	Slight markup over direct API Some provider features not exposed	Output needs designer polish Pricing unclear / changes often	Fewer voices than ElevenLabs Less consumer-facing brand
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.	B-tier. Useful for first drafts. v0 is the better bet for shipping code.	S-tier for realtime. If latency matters more than voice catalog, start here.
Link	Open →	Open →	Open →	Open →