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.

GPU Cloud & Inference

Replicate: Pricing, Features & Alternatives

Replicate is the inference end of this category. Instead of renting a GPU, you call one of tens of thousands of hosted models, or push your own packaged with its open-source Cog tool, and pay per image, per token or per second of hardware. Public models are often billed by output: FLUX images at $0.025–0.04 each, for example. Private deployments pay by the second for the GPU, including setup and idle time: $0.81/hour for a T4, $3.51 for an L40S, $5.04 for an A100 80GB and $5.49 for an H100. Cloudflare acquired Replicate in a deal announced in November 2025, and the brand continues as it merges into Workers AI.

Replicate Pricing Plans (2026)

Plan	Price	Highlights
Public modelsPopular	Per output or per second (e.g. $0.025–0.04 / FLUX image)	No infrastructure to manage · Pay only for predictions
Private deployments	Per second: H100 $5.49 / hour, A100 $5.04 / hour	Billed for setup and idle time too · Custom models via Cog

Pricing summary: Usage-based. Always confirm current pricing on the official site.

Key Replicate Features

No infrastructure to manage
Pay only for predictions

Pros

+Fastest way to put an open model behind an API
+Huge catalogue of ready-to-run models
+Per-output pricing for public models is easy to reason about

Cons

−GPU-hour rates well above raw GPU clouds
−Private models pay for idle time
−Roadmap now tied to the Cloudflare integration

Best Replicate Alternatives

Compare all

Runpod

Usage-based

Lambda

Usage-based

Replicate Compared

Replicate vs Runpod Replicate vs Lambda

Replicate FAQ

What is Replicate used for?⌄

Replicate is a gpu cloud & inference tool. Run open models with one API call, billed per output or per second of GPU time. Replicate is now part of Cloudflare.

Is Replicate free?⌄

Replicate does not offer a permanent free tier.

How much does Replicate cost?⌄

Replicate uses usage-based (pay-as-you-go) pricing — see the official pricing page for current rates.

What are the best Replicate alternatives?⌄

Popular Replicate alternatives include Runpod, Lambda. Compare pricing and features on our Replicate alternatives page.