NVIDIA NeMo Guardrails
Programmable conversational guardrails toolkit using the Colang DSL, covering input, dialog, retrieval, execution and output rails.
| Category | Guardrails & Safety |
| Open source | Yes |
| Self-hostable | Yes |
| Pricing model | free |
| Pricing notes | Apache-2.0, free; enterprise support via NVIDIA AI Enterprise |
| Framework integrations | langchain, openai-sdk, colang |
| Funding / ownership | NVIDIA |
| GitHub stars | 6,416 |
| Maintenance | active (commit 2026-06-12) |
| License (GitHub) | not detected |
| Open issues | 184 |
| Maturity signal | 87/100 (Mature) — computed from public GitHub signals, see methodology |
Pricing/feature source: https://github.com/NVIDIA-NeMo/Guardrails
Maturity signal is computed from public GitHub data only. How it is calculated.
Frequently asked questions
Is NVIDIA NeMo Guardrails open source?
Yes.
Can I self-host NVIDIA NeMo Guardrails?
Yes — NVIDIA NeMo Guardrails can run in your own infrastructure.
How much does NVIDIA NeMo Guardrails cost?
Free. Apache-2.0, free; enterprise support via NVIDIA AI Enterprise