Fiddler AI has secured $30 million in Series C funding, led by RPS Ventures, to accelerate development of a neutral control plane that brings unified observability, governance, and real-time controls to compound AI systems and autonomous agents in enterprises.
Fiddler AI addresses a critical enterprise gap by offering a comprehensive, batteries-included platform for AI observability and AI governance. Unlike fragmented point solutions focused on developer debugging or those that outsource evaluation to external models, Fiddler provides holistic visibility into complex agentic workflows. Its proprietary trust models ensure enterprises can deploy autonomous agents and predictive AI at scale with built-in safety, accuracy, and compliance features.
"The explosion of AI tools has created a significant gap in enterprise governance," said Timothy Murphy, Partner at RPS Ventures. "Companies are deploying agents that interact with customers and make consequential decisions, but they're monitoring them with fragmented point solutions built for simpler, deterministic use cases. A single agentic workflow can involve dozens of handoffs between models, tools, and APIs—each one a potential point of failure. Fiddler is the first company to deliver a true control plane that provides complete visibility into what agents are doing, contextual intelligence about why they're behaving that way, and real-time controls to enforce policy and prevent catastrophic failures. That category-defining position is why we led this round."
Agent failures in production environments carry serious consequences, including regulatory fines, legal liability, and reputational damage. These risks are especially acute in heavily regulated sectors where oversight is mandatory. Fiddler’s rapid revenue growth and recognition reflect accelerating enterprise adoption, particularly among organizations that cannot afford governance shortfalls when deploying AI agents in customer-facing or decision-critical processes.
Fiddler’s platform is positioned as mission-critical infrastructure for the agent era, similar to orchestration layers that emerged during the cloud transition.
“Every major platform shift requires new infrastructure. When companies moved to the cloud, they needed orchestration layers. As they deploy autonomous agents, they need a control plane,” said Krishna Gade, co-founder and CEO of Fiddler. “Our years building trust infrastructure gave us the foundation to solve this—understanding not just what agents do, but why they do it. That's the difference between monitoring tools and mission-critical infrastructure."
“Fiddler has delivered unified observability, protection, and governance across agents and predictive models making it fundamental to our AI strategy," said Karthik Rao, CEO of Nielsen. "We are especially looking forward to the upcoming rollout of the control plane and the intelligent orchestration it will bring as our AI footprint grows.”
Founded in 2018, Fiddler brings proven expertise in root cause analysis, governance, and enterprise-scale deployments. The new funding will support expansion into key verticals and deeper integrations across the AI ecosystem, enabling organizations to diagnose issues, explain agent decisions, and enforce policies in real time.
"Building trust into AI has been our mission since day one—trust that systems perform as expected, that risks are managed proactively, and that AI investments deliver measurable returns," continued Gade. "We're grateful to RPS Ventures and our investors for supporting that mission as agents become central to enterprise operations. The control plane for compound AI systems is how we deliver trust at scale."
As AI agents become core to business operations, Fiddler’s control plane approach helps enterprises maintain reliability, compliance, and accountability while unlocking the full potential of compound AI systems.
About Fiddler AI
Fiddler is the all-in-one AI Observability and Security platform for responsible AI. Our evaluations, monitoring and analytics capabilities provide visibility, context and control across development and production. This gives teams actionable insights to build better, more reliable AI agents, and GenAI and ML applications. An integral part of the platform, the Fiddler Trust Service provides quality and moderation controls for AI agents and GenAI applications. Powered by cost-effective, task-specific, and scalable Fiddler-developed Trust Models — they deliver the fastest guardrails in the industry. Fiddler offers flexibility in secure deployment options through cloud and VPC environments.
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