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 Guardrails & Agent SecurityFree tier

Lakera Guard: Pricing, Features & Alternatives

Lakera Guard is a security API you call before and after the model. It detects prompt injection, jailbreaks and adversarial instructions, sensitive-data exposure, harmful output and, for agents, unsafe tool use, including indirect injection that arrives through MCP-connected tools. Lakera claims sub-50 ms latency and coverage of 100+ languages, and its detectors are informed by Gandalf, its public prompt-injection game. Check Point announced its acquisition of Lakera in September 2025, and Lakera now sits inside Check Point's AI security portfolio. You can start free on the Community plan; production volumes, self-hosting and SLAs are quoted by sales.

Lakera Guard Pricing Plans (2026)

Plan	Price	Highlights
CommunityPopular	$0	Prompt injection and jailbreak detection · PII and content checks · SaaS API
Enterprise	Custom	Production volumes · Self-hosted option · SSO and SLA

Pricing summary: Free · paid plans by quote. Always confirm current pricing on the official site.

Key Lakera Guard Features

Prompt injection and jailbreak detection
PII and content checks
SaaS API

Pros

+Purpose-built prompt-injection detection
+Sub-50 ms claimed latency
+Covers agent tool use and MCP injection

Cons

−Production pricing is not published
−A classifier API, not policy or dialog control
−Your prompts go to a third-party API on SaaS

Best Lakera Guard Alternatives

Compare all

NVIDIA NeMo Guardrails

Free

Guardrails AI

Free · paid plans by quote

Amazon Bedrock Guardrails

From $0.15/mo

Lakera Guard Compared

Lakera Guard vs NVIDIA NeMo Guardrails Lakera Guard vs Amazon Bedrock Guardrails Lakera Guard vs Guardrails AI

In-depth guideBest AI Guardrails 2026: NeMo Guardrails vs Guardrails AI vs Lakera Guard vs Bedrock GuardrailsPrompt injection, jailbreaks, leaked personal data and agents calling tools they should not. Two open-source guardrail frameworks and two hosted services compared on what they catch, where they sit, and what a million messages costs.

Lakera Guard FAQ

What is Lakera Guard used for?⌄

Lakera Guard is a ai guardrails & agent security tool. Real-time API that screens prompts, responses and agent tool use for prompt injection, jailbreaks and data leaks, in under 50 ms. Part of Check Point.

Is Lakera Guard free?⌄

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

How much does Lakera Guard cost?⌄

Lakera Guard is free to use, with usage-based pricing on some features.

What are the best Lakera Guard alternatives?⌄

Popular Lakera Guard alternatives include NVIDIA NeMo Guardrails, Guardrails AI, Amazon Bedrock Guardrails. Compare pricing and features on our Lakera Guard alternatives page.