Fiddler AI
Palo Alto, California, United States
Fiddler AI provides a control-plane platform for enterprise AI that lets organizations test, monitor, protect, and govern both machine-learning models and generative AI or agentic systems in production. Capabilities include real-time monitoring for model drift, bias, and accuracy, generative-AI-specific evaluation for toxicity, hallucination, and jailbreak detection, enforceable guardrails, and audit-ready governance reporting across the AI lifecycle.
- Headquarters
- Palo Alto, California, United States
- Founded
- 2018
- Website
- www.fiddler.ai/
Notable facts
- Raised a $30M Series C on January 27, 2026, led by RPS Ventures with participation from Lightspeed, Lux Capital, Insight Partners, and Capgemini Ventures, bringing total funding to $100M.
- Named integrations include Amazon SageMaker AI, Google Vertex AI, NVIDIA NIM and NeMo Guardrails, Databricks, and Datadog.
- The U.S. Navy's Project AMMO uses Fiddler AI Observability and has reported a 97% reduction in ML model retraining time.
- Nielsen is a named customer, cited as using Fiddler for observability, protection, and governance across agents and predictive models.
Service categories
Pricing
Fiddler's Developer plan lists a usage-based rate of $0.002 per trace; the Enterprise tier remains contact-sales/quote-based. Source →
Case study
Case study describing how an anonymized leading financial services institution scaled AI governance using Fiddler alongside Amazon SageMaker AI, including Fiddler Trust Models to detect hallucinations and PII. Read the case study →
Sources. This profile is compiled from public reference data, WebSearch-verified againstsource 1 · source 2 · source 3. Data as of 2026-07-13. See methodology.
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