NVIDIA NeMo Guardrails: Pricing, Tiers and What's Actually Covered
NVIDIA's open-source rails library for adding programmable safety, topical and prompt-injection guardrails around any LLM. Self-hosted; no managed-service tier.
Pricing tiers
Verbatim from the NeMo Guardrails pricing page on 2026-06-19. Quote-only tiers are surfaced as such, never with an inferred price.
| Tier | Price | Free allowance | Notes |
|---|---|---|---|
| Open source | Free / month | Unlimited self-hosted use | Apache 2.0. Infrastructure, eval and engineer FTE remain buyer cost. |
Source: https://github.com/NVIDIA/NeMo-Guardrails | Verified 2026-06-19
OWASP LLM Top 10 coverage
What NeMo Guardrails defends against, as claimed on its product pages and security documentation. Coverage flags are binary: an item is listed only if the vendor names the attack class explicitly.
- LLM01 Prompt injection
- LLM02 Sensitive information disclosure
- LLM03 Supply chain
- LLM04 Data and model poisoning
- LLM05 Improper output handling
- LLM06 Excessive agency
- LLM07 System prompt leakage
- LLM08 Vector and embedding weaknesses
- LLM09 Misinformation
- LLM10 Unbounded consumption
Hidden costs
Beyond the line-item price, every runtime AI guardrail carries operating costs the vendor page does not surface. Plan for these in any board paper.
- Per-call latency overhead. Guardrail check sits in the request path; budget 50 to 300 ms extra per LLM call.
- False-positive remediation. Allocate engineering time to tune policies after every guardrail rule change.
- Logging and retention. Guardrail decisions need to land in your SIEM. See siemcostcalculator.com.
- On-call coverage. Treat AI security alerts like SOC alerts. See securityoperationscost.com.
What NeMo Guardrails is best for
NVIDIA's open-source rails library for adding programmable safety, topical and prompt-injection guardrails around any LLM. Self-hosted; no managed-service tier.
NeMo Guardrails pricing FAQ
Common questions about NVIDIA NeMo Guardrails, answered from the verified figures above. Every answer restates a value from the pricing table, not an inferred one.
How much does NVIDIA NeMo Guardrails cost?
NVIDIA NeMo Guardrails offers Free open source (Apache 2.0). Paid tiers, where they exist, are shown in the pricing-tier table above, verified 2026-06-19.
Does NVIDIA NeMo Guardrails have a free tier?
Yes. NVIDIA NeMo Guardrails has a "Open source" tier at no charge, with a free allowance of Unlimited self-hosted use. See the pricing table above for the paid scopes.
Does NVIDIA NeMo Guardrails defend against prompt injection?
Yes. NVIDIA NeMo Guardrails explicitly names OWASP LLM01 prompt injection among the attack classes it covers.