We got tired of answering the same question eleven times
Lumen started as an internal script that searched our own support docs. It turned out everyone else had the same graveyard of files.
What we optimise for
Four rules that decide what gets built and what gets cut.
Show the receipts
An answer without a source is a rumour. Every feature we ship has to survive the question: how would a sceptical lawyer verify this?
Boring infrastructure
Hybrid retrieval, careful chunking, incremental sync. Unglamorous engineering beats a clever prompt every single time.
Say 'I don't know'
We would rather return nothing than invent something. Trust compounds; a single confident hallucination undoes a quarter of goodwill.
Small team, direct line
You email us, one of the six of us replies. No tiered support queue, no ticket robot.
Six people, one shared inbox
Sofia Marín
Co-founder, product
Yuki Tanaka
Co-founder, engineering
Priya Raman
Design & research
Daniel Okafor
Trust & compliance
2024
Built as an internal tool to search four years of support macros.
2025
First ten paying teams. Citation panel rewritten twice.
2026
80+ teams, SOC 2 Type II, EU hosting, public API.
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