Fiddler AI

Founded in 2018.

Fiddler was founded in October 2018 by Krishna Gade, Amit Paka, and Manoj Cheenath. The company was established to make AI systems more trustworthy through explainability and monitoring.

Fiddler raised a $3 million seed round led by Lightspeed, with participation from Bloomberg Beta and Haystack. This was the company’s first disclosed financing.

Fiddler Labs announced a $10.2 million Series A funding round to accelerate its explainable AI work. The round brought the company’s disclosed total funding at that time to $13.2 million.

Fiddler announced a strategic investment from Amazon’s Alexa Fund and said it would collaborate with the fund to advance explainable AI and continuous production monitoring. The release also noted recently launched ML monitoring capabilities.

Fiddler announced a strategic collaboration with In-Q-Tel and participation in a FinRegLab research project. The company described the collaboration as a strategic investment from In-Q-Tel supporting AI explainability and model monitoring.

Fiddler announced a $32 million Series B led by Insight Partners, with participation from existing investors including Lightspeed Venture Partners, Lux Capital, Haystack Ventures, Bloomberg Beta, Lockheed Martin, and The Alexa Fund. The company said its total funding had reached $47 million.

Fiddler announced the creation of Fiddler India and said it had acquired Dblue Inc., a Bengaluru startup specializing in end-to-end ML monitoring. Ramjee Ganti, Dblue’s CEO and co-founder, was named site lead for the India office.

Fiddler announced a $18.6 million Series B extension, bringing its total Series B to $50 million. The company said the capital would support its AI observability and AI safety platform expansion.

$100M total funding after $30M Series C in Jan 2026.

Fiddler announced a $30 million Series C led by RPS Ventures, bringing total funding to $100 million. The company said the financing would accelerate its control-plane strategy for compound AI systems.