Prompt Armor LLM Pricing 2026: Plans, Costs & Free Options

Last Updated: May 2026

Real-time prompt injection firewall protecting LLM applications from adversarial inputs and jailbreaks. This page breaks down Prompt Armor LLM's Freemium pricing model, what it includes, and how it compares to free alternatives in the AI Security & LLM Safety category.

Pricing Overview

Pricing Model

Freemium

This means the tool is free to use and typically open-source — you self-host it, customize it, and pay nothing for the software itself.

Is Prompt Armor LLM Free?

Yes, Prompt Armor LLM is completely free and open-source. You can download, use, and modify it without paying any license fees.

Is Prompt Armor LLM Worth It?

Prompt Armor LLM is rated 4.2/5 in our AI Security & LLM Safety directory and is completely free, which makes it an easy recommendation for any team that can self-host and manage their own deployment. You get full functionality without licensing costs, though you trade vendor support for community forums and documentation. For AI Security & LLM Safety workflows, Prompt Armor LLM delivers strong value, especially for individuals, students, and budget-conscious teams. The main consideration is operational overhead — you own the install, updates, and tuning. If your team has the technical capacity, Prompt Armor LLM is well worth adopting.

Cheaper Alternatives

If Prompt Armor LLM's pricing is out of budget, these AI Security & LLM Safety tools offer free or freemium options:

Lakera Guard Freemium
Lakera Guard protects LLMs from prompt injection, jailbreaks, and data leaks in real time via a simple API. Free tier available. Full review with pricing and alternatives.
Nightfall AI for LLMs Freemium
AI-native DLP for ChatGPT, Copilot and LLM apps preventing sensitive data leakage in prompts.
Garak LLM Scanner Free/OSS
Open-source LLM vulnerability scanner testing for prompt injection jailbreaks and safety failures.

Frequently Asked Questions

How much does Prompt Armor LLM cost?

Prompt Armor LLM uses a Freemium pricing model. This means the tool is free to use and typically open-source — you self-host it, customize it, and pay nothing for the software itself. For exact current pricing, visit the Prompt Armor LLM website directly — vendors update tiers and quotas regularly.

Is there a free version of Prompt Armor LLM?

Yes, Prompt Armor LLM is completely free and open-source. You can download, use, and modify it without paying any license fees.

What are cheaper alternatives to Prompt Armor LLM?

In the AI Security & LLM Safety category, the most popular free or freemium alternatives are Lakera Guard, Nightfall AI for LLMs, Garak LLM Scanner. Each offers a comparable feature set at lower or zero cost — see our /alternatives page for full breakdowns.