First Recon AI Firewall vs LLM Guard: side-by-side comparison (2026)

First Recon AI Firewall: Inline firewall inspecting AI prompts/responses for injections & policy violations. Built by First Recon AI.

LLM Guard: LLM Guard is a security toolkit that enhances the safety and security of interactions with Large Language Models (LLMs) by providing features like sanitization, harmful language detection, data leakage prevention, and resistance against prompt injection attacks.

The table above shows where their features, integrations, deployment and company size fit differ.

First Recon AI Firewall is made by First Recon AI. LLM Guard is open-source with 2,043 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. First Recon AI Firewall and LLM Guard are both LLM Guardrails products, and both cover Prompt Injection, LLM Security, LLM Guardrails. Key differences: First Recon AI Firewall is Commercial while LLM Guard is Free, LLM Guard is open-source. Use the table above to see where features, deployment and company size fit differ.