Fiddler Guardrails

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Fiddler Guardrails is ranked #3 of 21 in AI guardrail software on Inferse. It runs on API, Self-hosted, Web. There is a free plan.

Compared on AI guardrail software

Free plan: Yesfiddler.ai
Deployment: hybridfiddler.ai
Prompt injection defense: Yesfiddler.ai
PII detection: Yesfiddler.ai
Jailbreak detection: Yesfiddler.ai
Custom policies: Yesfiddler.ai
SDK languages: Python, Node.jsfiddler.ai

Facts

Purpose: Fiddler Guardrails is a runtime policy enforcement layer for agentic AI that evaluates prompts and responses against safety, security, privacy, and accuracy policies.fiddler.ai · 30 Sept 2026
Latency: Fiddler states Guardrails enforces policies at runtime in under 80ms.fiddler.ai · 30 Sept 2026
Deployment and data: Fiddler says its Centor Models run in customer cloud and VPC environments, with zero data egress from the customer environment.fiddler.ai · 30 Sept 2026
Safety coverage: Safety policies block harmful, inappropriate, and malicious content and cover metrics including jailbreaks, harassment, hate, illegal content, and violence.fiddler.ai · 30 Sept 2026
Privacy coverage: Privacy and compliance policies detect 35+ PII entities and healthcare specific entity types for HIPAA compliance, including API keys, payment card numbers, dates of birth, and medical record numbers.fiddler.ai · 30 Sept 2026
Accuracy coverage: Faithfulness policies check whether responses are grounded in provided context to prevent misleading output.fiddler.ai · 30 Sept 2026
Integration: Fiddler lists an out-of-the-box integration with NVIDIA NeMo Guardrails.fiddler.ai · 30 Sept 2026
API and languages: Guardrails is accessed through an API, with code examples for NodeJS, Python, cURL, or any HTTP library.fiddler.ai · 30 Sept 2026
Security controls: Fiddler says customer data is encrypted at rest with AES-256 or higher and communications use HTTPS/TLS 1.2 or higher.fiddler.ai · 30 Sept 2026
Compliance: Fiddler states it is SOC 2 Type II audited annually and HIPAA compliant.fiddler.ai · 30 Sept 2026
Support: Enterprise pricing includes white glove support with dedicated communication channels and a named Customer Success Manager.fiddler.ai · 30 Sept 2026
Availability: The documentation describes Guardrails as part of the Fiddler AI Observability and Security platform, accessed in a Fiddler environment using a REST API and API key.docs.fiddler.ai · 30 Sept 2026