What is App Stack Builder?

App Stack Builder is a free AI-powered tool that helps founders and developers choose the right tech stack for their projects based on budget, app type, team size, and skill level.

What is the best tech stack for SaaS in 2026?

The best tech stack for SaaS in 2026 typically includes Next.js 16 for frontend, Supabase for database and auth, Vercel for hosting, Stripe for payments, and PostHog for analytics. App Stack Builder can generate a personalized recommendation based on your specific budget and requirements.

Is App Stack Builder free to use?

Yes, App Stack Builder is completely free to use. You can generate unlimited tech stack recommendations without any cost.

What types of apps can I build with the recommended stacks?

App Stack Builder supports various app types including SaaS applications, web apps, mobile apps, e-commerce stores, internal tools, and AI/ML products.

How much does a SaaS tech stack cost per month?

A modern SaaS tech stack can cost anywhere from $0-50/month for bootstrapped startups using free tiers, $100-300/month for growth-stage startups, to $500+/month for enterprise-ready infrastructure. App Stack Builder helps you find the best tools within your specific budget.

What is the best tech stack for solo founders?

For solo founders, we recommend Next.js + Vercel (free), Supabase (free tier), Supabase Auth (free), Stripe (pay as you go), and Plausible or PostHog for analytics. This stack can run your entire SaaS for under $50/month.

Can I export my tech stack recommendations?

Yes, you can export your tech stack recommendations as a PDF document or copy them to your clipboard. You can also share a link to your stack with others.

AI Voice AgentsFree tier

LiveKit: Pricing, Features & Alternatives

LiveKit is the open-source option in voice AI. Its WebRTC media server and Agents framework let you build voice agents in code with any speech, LLM and voice provider, and you can self-host the whole stack. LiveKit Cloud runs it for you: Build is free with 1,000 agent minutes and 5 concurrent sessions, Ship is $50/month (5,000 minutes, 20 concurrent) and Scale is $500/month (50,000 minutes). Agent sessions beyond the allowance cost about $0.01 per minute, and you still pay your STT, LLM and TTS providers separately (prices as of August 2026).

LiveKit Pricing Plans (2026)

Plan	Price	Highlights
Open Source	$0 (self-hosted)	Media server and Agents framework · Any model provider · You run the infrastructure
Build	$0	1,000 agent minutes / month · 5 concurrent sessions
ShipPopular	$50 / month	5,000 agent minutes · 20 concurrent sessions
Scale	$500 / month	50,000 agent minutes · Up to 600 concurrent

Pricing summary: Free · paid from $50/mo. Always confirm current pricing on the official site.

Key LiveKit Features

5,000 agent minutes
20 concurrent sessions

Pros

+Open source and self-hostable
+Full control over the media pipeline
+Free cloud tier with 1,000 minutes

Cons

−You write the agent in code
−Model providers billed separately
−Self-hosting real-time media is real ops work

Best LiveKit Alternatives

Compare all

Retell AI

Usage-based

Vapi

Usage-based

Bland AI

Usage-based

LiveKit Compared

LiveKit vs Retell AI LiveKit vs Vapi LiveKit vs Bland AI

In-depth guideBest AI Voice Agent Platforms 2026: Vapi vs Retell vs LiveKit vs ElevenLabs vs BlandEvery voice platform advertises a per-minute price that isn't what you actually pay. True all-in cost, real-world latency, self-hosting, and compliance compared across the five that matter.

LiveKit FAQ

What is LiveKit used for?⌄

LiveKit is a ai voice agents tool. Open-source real-time media server and Agents framework for building voice AI. Self-host free, or use LiveKit Cloud.

Is LiveKit free?⌄

Yes — LiveKit has a free tier you can start with, and paid plans for more usage and features.

How much does LiveKit cost?⌄

LiveKit offers a free tier, with paid plans starting at $50/month.

What are the best LiveKit alternatives?⌄

Popular LiveKit alternatives include Retell AI, Vapi, Bland AI. Compare pricing and features on our LiveKit alternatives page.