Is Livewire production ready for SaaS?

Yes. Livewire is in production at thousands of SaaS platforms today including parts of Laravel's own commercial products. Livewire 3 added significant performance improvements (smaller payload, better DOM diffing, support for Alpine.js merged) and the framework is actively maintained by Caleb Porzio and the Laravel team. We have shipped Livewire SaaS applications serving 40,000 plus concurrent users with response times under 250ms and zero JavaScript framework code in the codebase.