Big Sister AI V2 · Live

End Sales
Astrology.

Big Sister is the AI method for closers. One objective 0-100 Sales Score per rep, from real conversations, with the evidence attached. Not opinions. Not gut feel.

Start with Solo See how it works ↓

$30 per scored rep, month to month. Cancel any time.

0
/ 100
Calibrating...
Michael K.
AE · Enterprise
Q3 2026 · Wk 7
Scored against one defined standard
We wrote down what we will and won't do. The Closer's Manifesto: nine principles for scoring humans and AI agents against one standard.Read it →
17
years running sales floors, not observing them
200+
sales teams scored before we built the product
100%
of customer conversations scored, no sampling
2025
winner, Texas AI Challenge
The Problem

Your team wins
8%. Why?

Eight percent is the team average, the number most managers run on. Look closer and one rep closes at 17% while another sits at 2%. Everyone can see the gap. Almost nobody can explain it. The Sales Score does, because every call is graded against one standard.

RepCallsWin rateScore
Team average1,4368%59
ARAlex R.28817%74
JTJess T.30114%71
MKMichael K.2769%63
DPDana P.2596%58

Same 8% average. A 17% rep and a 2% rep. The Score is the only column that tells you which is which, and why.

3%
Reviewed by a human
A manager reviews under three percent of customer conversations in a typical week. The other ninety-seven percent go out unscored and unseen.
0
Shared standard
Every reviewer grades on a different gut. There is no single 0-100 standard, so two reps with the same problem get two different verdicts.
6 mo
To catch a quiet miss
A rep can underperform for two quarters before the pipeline makes it obvious. By then the territory is cold and the quarter is gone.
Find your blind spot · 20 seconds · no email

How many customer
conversations are you
flying blind on?

Phone, Zoom, Teams, Meet - every conversation between a rep and a customer.

Question 1 of 3
How many reps talk to customers?
Anyone running live conversations - phone, Zoom, Teams or Meet.
How many of those conversations does a manager actually review each week?
Watched or listened to end to end, not skimmed.
Do reps score every conversation against one defined standard?
Same rubric, every conversation, every rep.
Your team runs about 0 customer conversations a month.
0
conversations a month with no objective signal

That gap is where Rep #8 hides at 2% for six months. Big Sister scores every conversation automatically, against one defined standard - a default skill set that works out of the box, plus custom sets tuned to your deal motion.

0
scored today
0%
of conversations reviewed
How It Works

Score every
conversation.

One objective 0-100 Sales Score per rep, the moment a call ends - against one defined standard, every rep, every week, no sampling. See how the score is built →

Where We Work

From deal created to close. The stretch nobody scores.

Every call, meeting, and message inside the deal - from created to won or lost - scored for every rep and AI agent. From the first real conversation with a buyer to the closed deal is where revenue is decided, and where no one has objective signal. Big Sister scores all of it.

Deal
created first real
conversation
Big Sister active · every interaction scored against the standard
Discovery Demo Proposal Negotiation
Company
Reps + AI agents
Customer
The buyer side
Sales Score 0-100 · scored against the standard
Phone calls Online meetings EmailSoon MessengersSoon
Won Lost
The stretch nobody scores

Big Sister makes it visible, and helps teams close the gap 3-5x.

The Market Today

Your stack records
the game. Nobody
scores it.

There is a layer missing above the tools you already run. The record exists. The tape exists. The objective score does not. That is the layer we built.

Layer 1
CRM
Records
Logs what happened: the deal, the stage, the close date. The system of record. It does not judge the conversation.
Layer 2
Notetakers
Keep the tape
Capture and transcribe the call so you can go back and listen. The system of replay. They hand you hours, not a verdict.
The missing layer
Big Sister
Scores every game
The referee that sits above the stack and grades every call 0-100 against one standard. Use it with the tools you already have.

CRM = record. Notetakers = tape. Big Sister = referee that scores every game. Big Sister reads your phone calls, your CRM and your notetaker transcripts today. Emails and messengers next.

Why Big Sister

Built by people
who ran sales
teams.

Not who observed them from a dashboard. We scored teams by hand for years, watched gut-feel management promote the wrong reps, and built the referee we wished we had.

Backed by
Capital Factory logoCapital Factory Plug and Play logoPlug and Play AWS logoAWS Microsoft logoMicrosoft
Partners & integrations
Salesforce logoSalesforce HubSpot logoHubSpot Pipedrive logoPipedrive Zoho logoZoho OpenAI logoOpenAI
17 years on the floor
Two decades carrying a bag and running rooms. We scored 200+ teams by hand before we wrote a line of product.
Winner, Texas AI Challenge 2025
Recognized for the governance layer, with a bench of infrastructure partners betting on the same thesis.
The Referee Loop
Every score is auditable against the transcript, with a human-in-the-loop check on the standard. No black box. No vibes.
Complements your stack
Sits on top of the CRM and the call recorder you already run. We score the game. We replace nothing.
For teams

Get your
team scored.

Solo is self-serve. For a team, tell us about it and we onboard you personally, usually within a week.

We reach out personally, usually within a week. No spam. No pressure.

You're on
the list.

Expect a note from Val directly within 24 hours. Not a sequence. An actual email.

You're #17 in line.
Want to move up? Share your link. Each person who joins moves you up the queue.
V2 is live. Start with Solo →