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Lemma has raised $2.3M in Pre-Seed funding to tackle silent AI agent failures in production, backed by investors including Matrix and Y Combinator.

PRIVATEAug 07, 2026•about 8 hours ago

Amount Raised

$2.3 Million

Round Type

Seed

New YorkAdvertising

Investors

Door DashMetaX AiOpen AiEight CapitalPosition VenturesComma CapitalCervin VenturesIrregular ExpressionsVermilion Cliffs VenturesLiquid 2 VenturesY CombinatorMatrix

Description

AI reliability startup Lemma has secured $2.3 million in pre-seed funding to develop monitoring infrastructure for AI agents. The funding round included notable investors such as Matrix and Y Combinator, aiming to address silent failures in AI systems. Founded by Jerry Zhang and Cole Gawin, Lemma was part of Y Combinator’s Fall 2025 batch. The company's platform has processed over one million agent traces, enhancing the understanding of AI behavior in production.

Company Information

Company

Lemma

Location

New York, New York, United States

About

Lemma is a leading omni-channel platform for emerging formats, offering brands, advertisers, DSP’s and media owners unparalleled control, scale, efficiency, and flexibility for driving business growth through emerging media. Our suite of products enables marketers and media owners to unlock the full potential of diverse advertising channels seamlessly. With a global presence and an emerging footprint in North America and EMEA, Lemma's Supply Side Platform (SSP) integrates programmatic buying in DOOH, CTV, and other emerging formats, empowering advertisers to create engaging campaigns that resonate across multiple touchpoints.

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