Series A · 2026
Lumina
AI that turns every meeting, lecture, and call into a living, searchable second brain — automatically.
Founded 2024
HQ San Francisco
Raising $15M
87k
ACTIVE USERS
Lumina
02 / 10
Problem
Knowledge evaporates
the moment meetings end.
"
I know we discussed the exact answer to this six weeks ago.
I just can't find where.
— Common refrain from knowledge workers worldwide
$47B
lost annually to poor knowledge management in US enterprises alone (McKinsey, 2024)
2.5h
per day the average knowledge worker spends searching for information
73%
of meeting decisions go untracked and are re-made within 60 days
Lumina
03 / 10
Solution
Your second brain,
lit from within.
Lumina joins every meeting, call, and voice memo — then distills, links, and surfaces the exact insight you need, when you need it.
01
Capture — Real-time transcription across Zoom, Meet, Teams, phone, and voice memos with 97.2% accuracy.
02
Understand — LLM layer extracts decisions, action items, questions, and key facts; links to prior context automatically.
03
Answer — Ask anything across months of meetings in plain language; Lumina cites the exact source.
Today
This Week
Meetings
Decisions
Search
◆ 3 new insights from Q2 planning sync
Ask Lumina
View decisions
Share
Lumina
04 / 10
Product
Four capabilities. One unified layer.
CAPTURE
Live Scribe
AI bot joins any meeting platform. Real-time diarization separates speakers with 97.2% accuracy even in noisy conditions.
Integrations: 14 platforms
DISTILL
Insight Engine
Automatically surfaces decisions, risks, commitments, and open questions. Flags when today's discussion contradicts a past decision.
Avg. summary time: 8 seconds
SEARCH
Deep Recall
Natural language search across every meeting, note, and transcript with full citation. Ask "what did we decide about pricing?" and get a timestamped answer.
Corpus: up to 3 years
SHARE
Team Memory
Shared knowledge graph for teams. New hires onboard 3× faster by querying the organization's institutional memory directly.
Avg. onboarding: −68% time
Lumina
05 / 10
Market Opportunity
A $42B market growing at 31% CAGR.
TAM
SAM
$1.4B
SOM
TAM — TOTAL ADDRESSABLE
$42B
Global knowledge management & AI productivity software market (IDC 2025)
SAM — SERVICEABLE
$9.8B
Knowledge workers at tech, professional services, and healthcare firms with 50–5,000 seats
SOM — 3-YEAR TARGET
$1.4B
14% of SAM via product-led growth + enterprise expansion; 320k paying seats by end-2028
Lumina
06 / 10
Traction
18 months. Product-led. Profitable unit economics.
Monthly Recurring Revenue
$620K
MRR as of May 2026
▲ 22% MoM (12-mo avg)
Paying Customers
1,840
companies, 87k total seats
▲ 18% MoM growth
Net Revenue Retention
138%
12-month cohort average
▲ 3pp vs prior year
MRR TRAJECTORY (JAN 2025 – MAY 2026)
Lumina
07 / 10
Business Model
PLG flywheel into high-NRR enterprise contracts.
Starter
Individual — 10h/mo capture, 90-day recall
Free
viral acquisition
Pro
Individual — unlimited capture, 3-year recall, integrations
$24
/ user / month
Team
2–50 seats — shared memory, admin controls, SSO
$18
/ user / month
Enterprise
Unlimited seats, on-prem, custom LLM, SLA, audit logs
$14
/ user / month (min $3k/mo)
Unit Economics
Average Contract Value
$4,040
Gross Margin
74%
CAC (blended)
$320
LTV / CAC
11.4×
Payback Period
5.8 mo
Lumina
08 / 10
Competition
We sit where no one else does.
DEEP AI REASONING
BASIC TRANSCRIPTION
INDIVIDUAL
TEAM / ENTERPRISE
Otter.ai
Fireflies
Notion AI
M365 Copilot
Lumina
Why Lumina wins
✓
Cross-meeting reasoning — links context across months, not just within one call
✓
Contradiction detection — flags when today's plan conflicts with a prior decision
✓
Team knowledge graph — org-wide memory, not just personal notes
✓
On-prem option — enterprise data stays inside your VPC
Lumina
09 / 10
Team
Repeat founders. Deep ML. Enterprise GTM veterans.
AK
CEO & Co-Founder
Arjun Kapoor
Previously VP Product at Dropbox. Built and shipped DocSearch (32M MAU). 2× founder.
Prev: Dropbox · YC S18
SL
CTO & Co-Founder
Sarah Lin
PhD NLP Stanford '21. Led speech-to-meaning research at Google Brain. 12 patents in audio ML.
Prev: Google Brain · Stanford AI Lab
MB
VP Sales
Marcus Bell
Scaled Notion's enterprise sales from $0 to $40M ARR. Closed first 3 Fortune 500 deals at Lumina.
Prev: Notion · Salesforce
NC
Head of Engineering
Nina Chen
Staff engineer at Figma during 0→1 phase. Built real-time collaboration infra serving 4M concurrent users.
Prev: Figma · Stripe
ADVISORS
Reid Hoffman (Greylock)
Diane Greene (fmr. Google Cloud CEO)
Noam Shazeer (Character.AI)
Clara Shih (Salesforce AI)
Lumina
10 / 10
We are raising
$15M
SERIES A · PRE-MONEY VALUATION
PRE-MONEY VALUATION
$72M
Use of Funds
40%
R&D — model fine-tuning, on-prem infra, mobile
35%
GTM — enterprise sales team (6 AEs), partnerships
15%
Infrastructure scaling to support 10× user growth
10%
G&A, legal, compliance (SOC2 Type II, HIPAA)
18 MONTHS
$5M ARR · 10,000 paying companies
30 MONTHS
$14M ARR · Series B ready
CONTACT
[email protected] · lumina.ai/deck