Directory / Agent Observability & Evals

Lemma

Production Monitoring for AI agents

Lemma is a Lemma is an AI agent observability platform for monitoring production agent runs, surfacing silent failures, grouping recurring issues, sending alerts, and helping teams improve agents from traces and evals. AI agent company selling to AI agent teams needing production observability and evals. Latest disclosed round: Pre-Seed ($2.3M, 2026-08-13). About 9 employees, +300.0% over 6 months.

Agent Observability & EvalsObservability & evalsActiveuselemma.ai ↗

Headcount

—▲ 300.0%3m · 6m

src: Clay (LinkedIn)

X followers

—

——7d · 30d

Traffic / month

4,743

src: Clay (web traffic)

Latest round

$2.3M

Pre-SeedAug 13, 2026

src: globenewswire.com/news-release/2026/08/13/3344773/0/en/2-3m-pre-seed-for-lemma-backed-by-matrix-yc-openai-xai-operators-to-fix-silent-ai-agent-failures.html

// profile

Product

Agent type: Lemma is an AI agent observability platform for monitoring production agent runs, surfacing silent failures, grouping recurring issues, sending alerts, and helping teams improve agents from traces and evals.
Primary buyer: AI agent teams needing production observability and evals
Integrations: —
MCP support: —
Pricing: —
HQ: San Francisco, California, US
Founded: 2025
LinkedIn: Profile ↗

// capital

Funding

Round: Pre-Seed
Amount: $2.3M
Date: Aug 13, 2026
Leads: —
Source: Announcement ↗
Investors: —

// team

Hiring

Employees: 9
Growth 3m / 6m: — / +300.0%
Open roles (sample): —
X mentions this week: —
X handle: —

// x.com

Sources

Last verified: Nov 4, 2026

Profile: https://www.ycombinator.com/companies/uselemma
Funding: https://www.globenewswire.com/news-release/2026/08/13/3344773/0/en/2-3m-pre-seed-for-lemma-backed-by-matrix-yc-openai-xai-operators-to-fix-silent-ai-agent-failures.html
Headcount: Clay (LinkedIn)
Open jobs: —
Traffic: Clay (web traffic)
Pricing: —
X metrics: —
X handle (homepage-verified): —
Clay enrichment: Clay enrichment 2026-11-04
Homepage: https://www.ycombinator.com/companies/uselemma | https://uselemma.ai
funding: https://www.globenewswire.com/news-release/2026/08/13/3344773/0/en/2-3m-pre-seed-for-lemma-backed-by-matrix-yc-openai-xai-operators-to-fix-silent-ai-agent-failures.html
seed_type: YC directory
funding_status: Verified (primary/press)
funding_source_type: press

// related

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// faq

About Lemma

What does Lemma do?+

Production Monitoring for AI agents

How much has Lemma raised most recently?+

Pre-Seed of $2.3M on Aug 13, 2026.

How many employees does Lemma have?+

About 9 (3-month growth —).

// cite

Cite this data

Lemma profile. Agent Market Map, The GTM Engineering Newsletter. Last verified Nov 4, 2026. https://agentmarketmaps.com/company/lemma