Fiddler AI

Fiddler AI is an observability and governance platform for organizations running machine learning models and LLM-based AI agents in production. It markets itself as an "AI Control Plane," giving teams visibility into how models and agents behave and a way to enforce policies directly on the requests and responses moving through those systems, rather than only reviewing logs after the fact. Core capabilities include end-to-end observability across the AI lifecycle, guardrails that can block or flag outputs against enterprise policy in real time, continuous evaluation from testing through production, and tools for governance, risk management, and compliance. The platform also includes root-cause analysis features that trace problems back through a model or agent's full execution context, and capabilities aimed at detecting bias as part of responsible AI practice. Fiddler is built for enterprise teams in regulated or high-stakes industries such as financial services, healthcare, insurance, and government, where model errors or bias carry real compliance risk. It integrates with common ML infrastructure including Amazon SageMaker, Google Cloud Vertex AI, NVIDIA NIM and NeMo Guardrails, Databricks, and Datadog. Pricing requires contacting sales.