Lemma
Lemma is a San Francisco-based startup building production monitoring and reliability tools specifically for AI agents, enabling companies to automatically improve their systems using real-world data.
Backed by Vermilion Cliffs Ventures, Comma Capital, Eight Capital and 4 more
- Team size
- 1-10
- Founded 2025
- Total raised
- $2.8M
- Seed · last round Aug '26
About Lemma
AI agents will soon handle the majority of the world's economic work. Lemma makes sure they're reliable.
We build production monitoring that catches the silent failures observability tools miss, then turns production data into self-healing loops that make agents better automatically. Some of the fastest-growing startups in SF already run on Lemma, and we process millions of agent conversations a day.
Backed by Y Combinator (F25), Matrix, Liquid 2, and operators from OpenAI, xAI and DoorDash. We hire people who act like founders: mission-driven, biased toward action, and obsessed with craft.
Funding
$2.8Mtotal raised
- Aug 2026 · Pre-seed$2.3M
- Dec 2025 · Pre-seed$500k
- Vermilion Cliffs Ventures
- Comma Capital
- Eight Capital
- Irregular Expressions
- Liquid 2 Ventures
- Matrix
- Y Combinator
Company at a glance
The team at Lemma
1-10 peopleSee everyone on LinkedIn
Location
Team Composition
6 people- Engineering and Technical1 senior4
- Consulting1 senior1
Life at Lemma
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