Railproof vs. The Alternatives
For engineering teams and technical evaluators actively comparing AI governance solutions. Railproof was built to solve an institutional problem: regulated enterprises need to enforce policy, generate legally defensible audit evidence, and maintain sovereign control.
| Feature | NeMo Guardrails | LangChain Wrappers | Railproof Infrastructure |
|---|---|---|---|
| Deployment Model | SDK (Imported into app) | SDK (Imported into app) | Deployable Sovereign Proxy |
| Enforcement Power | Best-effort prompt filtering | Passive observation | 14-point deterministic gauntlet |
| Bypassable? | Yes (Developers can override) | Yes (Developers can override) | No — Enforced at VPC egress |
| Audit Evidence | Stateless JSON logs | Stateless JSON logs | SHA-256 Chained Ledger |
| Legal Defensibility | "Trust us" logs | "Trust us" logs | Court-admissible receipts |
| Policy Control | Insecure YAML files | Python config files | RSA-signed Governance |
| Forensic Discovery | ✗ | ✗ | ✓ Multi-hop Agentic Engine |
| Cost Governance | ✗ | ✗ | ✓ Per-tenant budget routing |
Governance: The Critical Difference
NeMo Guardrails and LangChain wrappers are developer tools. They live inside the application. Railproof is sovereign infrastructure that governs the application and the developers alike.
- Developers can modify or bypass safety rules.
- No oversight on how the SDK is implemented.
- Zero visibility for auditors without code review.
- Physically impossible to bypass at the network layer.
- Compliance team owns the RSA governance keys.
- Enforces policy across all apps in the stack.
Audit Evidence: Logs are not Proof
Logs can be altered, lost, or ignored. Railproof generates a continuous chain of custody that stands up to regulatory scrutiny.
- Stateless logs that offer no proof of integrity.
- Manual forensic work to build evidence trails.
- "Best effort" safety with no legal weight.
- Cryptographic receipts for every AI decision.
- Automated Regulatory Submission Packs.
- Immutable ledger ensures court-admissibility.
Choosing the Right Tool
Use NeMo or LangChain when:
- Building customer-facing chatbots needing politeness.
- Focusing on developer-led agent workflows.
- Rapid prototyping in Python environments.
Use Railproof when:
- Handling regulated data (PHI, PII, financial).
- Needing to demonstrate compliance to auditors.
- Security/Legal needs governance developers can't override.
- AI failure has legal or financial consequences.
Railproof Is Additive, Not a Replacement
Railproof does not require you to remove existing tools. It wraps your entire AI stack at the infrastructure layer, providing a governance layer that everything operates inside of.