Fiddler

Fiddler Labs Inc. is a US-based company specializing in AI observability, providing advanced tools for monitoring and controlling AI applications in various sectors, ensuring operational efficiency and compliance. Founded in 2018 and headquartered in Palo Alto, US, Fiddler Labs Inc. focuses on AI observability solutions.

The company's founding team includes Krishna Gade, Amit ? , and Manoj Cheenath. Recently, on August 21, 2024, Fiddler raised USD 18. 95 mn in SERIES B funding from a range of investors including Alpha Square Group and Capgemini Service SAS, bringing the total amount raised to USD 18.

95 mn with a current company valuation of USD 126. 24 mn. Fiddler AI specializes in AI observability, offering a suite of products that enhance the monitoring and control of AI applications across multiple sectors. Key offerings include Fiddler AI Observability, which provides real-time monitoring of large language models (LLMs) and machine learning (ML) systems.

The platform supports agentic observability, ensuring end-to-end visibility over AI agents' lifecycle. Fiddler's solutions are utilized by clients such as the U. S. Navy and Integral Ad Science and are deployed globally in regions including North America, Europe, and Asia.

Fiddler AI operates on a subscription-based revenue model, providing tiered pricing plans for its B2B clients. Clients subscribe to services that facilitate comprehensive monitoring and governance of AI systems. The pricing structure includes annual and monthly subscription options for products like Fiddler Trust Service and LLM Observability, which are designed to enhance compliance and security in AI applications. In August 2024, Fiddler Labs Inc.

secured USD 18. 94 mn in SERIES B funding, part of a larger USD 21. 75 mn round, aimed at enhancing their platform for large language model observability, expanding their enterprise reach, and ensuring responsible deployment of AI technologies. The funding will support upcoming product enhancements and facilitate entry into new markets, with plans to broaden their geographic footprint beyond current operations in North America, Europe, and Asia.

In January 2026, Fiddler raised USD 30 million in series C funding led by RPS Ventures, with participation from LG Technology Ventures, BGV, LDV Management, Capgemini Service SAS, Dallas Venture Capital, Dentsu Ventures, Insight Partners, Lightspeed Venture Partners, Lux Capital, and Mozilla Ventures. The company will use the funding to expand its control platform for artificial intelligence agents, deepen integrations, and scale adoption in regulated industries such as healthcare, financial services, and insurance.