Fiddler AI

Fiddler AI is an AI Control Plane providing monitoring, evaluation, and governance for enterprise AI agents throughout their lifecycle — real-time guardrails, continuous evaluation, and compliance auditing, backed by $30M in Series C funding and AWS Preferred Partner status. Who it's for: enterprises deploying AI agents in production who need policy enforcement and auditable compliance tracking, not just a model-quality dashboard. Strengths: Guardrails enforce inline at under 80ms latency using Fiddler's own proprietary models rather than requiring an external LLM API call for every check — a real architectural choice for both speed and cost. A genuine free tier (real-time guardrails powered by their own models) lets a team evaluate before committing to usage-based pricing. Weaknesses and limitations: beyond the free tier, pricing is usage-based ($0.002/trace) plus custom enterprise tiers — real cost scales with actual agent traffic volume, which needs estimating in advance. Real-world scenario: an enterprise running multiple AI agents in production needs to block harmful outputs before they reach users and produce an auditable compliance trail for regulators.