6 tools compared on real pricing, genuine strengths, and the limitations that only show up after you buy.
We track 6 AI Governance tools, 3 of which have a free or freemium tier you can evaluate without a sales call. The list includes Credo AI, Guardrails AI and Lakera. Each entry below lists real pricing, what it is genuinely good at, and the limitations that only show up after you buy.
| Tool | Pricing model | What it costs |
|---|---|---|
| Credo AI | enterprise-quoted | Enterprise pricing, quoted per organization. |
| Guardrails AI | freemium | Open-source and free. The hosted Guardrails Server and enterprise support are paid. |
| Lakera | freemium | Free tier for developers. Paid and enterprise plans for production protection. |
| NVIDIA NeMo Guardrails | free | Open-source and free. Part of the broader NVIDIA NeMo and enterprise AI stack. |
| Protect AI | enterprise-quoted | Enterprise pricing, quoted per organization. |
| Zenity | enterprise-quoted | Not published — enterprise sales. Scoping is typically driven by the number of agents and connected resources discovered during assessment. |
An AI governance platform that helps enterprises inventory AI systems, manage risk, and demonstrate compliance with regulations and internal policy.
An open-source framework for validating and correcting LLM outputs against defined rules, with a hub of reusable validators.
An AI security platform that defends LLM applications against prompt injection, jailbreaks, data leakage, and other model-layer attacks.
An open-source toolkit from NVIDIA for adding programmable safety, topic, and security rails to LLM-based conversational systems.
An enterprise platform for AI and ML security — scanning models for threats, securing the ML supply chain, and giving security teams visibility into AI risk.
Security posture management and runtime defense for AI agents — discovers what agents exist, what they can reach, and stops them at the point of action.
Practical playbooks, prompts, and tool stacks — for the SMB operators and enterprise teams actually shipping AI.
Free implementation guides for SMB operators and enterprise teams — workflows, prompts, governance, and tool stacks built to ship.