Skip to content
High Tech Series C Founded 2018

Fiddler Labs

Fiddler Labs is a developer of an AI observability platform for monitoring, explainability, and responsible AI practices. The platform offers capabilities for model monitoring, LLM observability, and agentic observability, providing tools for detecting model drift, assessing performance, and setting alerts. It supports NLP and computer vision monitoring, explainable AI, analytics, and responsible AI practices.…

📍 Palo Alto, United States · AI Infrastructure,

Funding snapshot

Last roundSeries C
Amount$30M
Date27 January 2026
Total raised$100M
Team size115

About

Fiddler Labs is a developer of an AI observability platform for monitoring, explainability, and responsible AI practices. The platform offers capabilities for model monitoring, LLM observability, and agentic observability, providing tools for detecting model drift, assessing performance, and setting alerts. It supports NLP and computer vision monitoring, explainable AI, analytics, and responsible AI practices. Fiddler helps enterprises deploy AI confidently by ensuring model transparency, fairness, and compliance with regulatory requirements. The platform serves industries including finance, healthcare, and technology where AI accountability is critical. Founded in 2018 and headquartered in Palo Alto, California, Fiddler Labs has raised $100 million at the Series C stage from investors including Insight Partners, Lightspeed Venture Partners, Lux Capital, In-Q-Tel, Alexa Fund, Lockheed Martin, Bloomberg Beta, Cisco Investments, Samsung NEXT, Alteryx, and Mozilla Ventures.

Business model

AI Infrastructure > Enabling Technologies > Software > ML Model Monitoring,

Plug and Play Tech Center Batches > Fintech > Batch 11

Founders & team highlights

Founder with Prior Acquisition,

Serial Founder

Team background

Company Wise > Paypal, Microsoft,

Top Rated Teams > Serial Entrepreneur,

College Wise > University of California (Berkeley)

Institutional investors

Alexa Fund In-Q-Tel Insight Partners Lightspeed Venture Partners Lux Capital Haystack Lockheed Martin Bloomberg Beta Alteryx Cisco Investments Dallas Venture Capital Alpha Square Group Samsung NEXT Essence VC Dentsu Ventures

Latest coverage

No articles yet.

Raising like Fiddler Labs?

Analyze your pitch deck before your next raise.

Analyze My Deck →