How pricing, costs and growth tie together into one model; no model exists, so this page sets out its drivers, its formulas and one worked example on the proposed prices, every figure marked a projection, and Param supplies the growth and cost inputs that have no source.
Today
Inputs with a source
Input
Value
Source
v1 plan
$79 or ₹4,999 a month
brew working tree docs/pricing.md:20
Wallet added by the plan
$12 a month
brew working tree docs/pricing.md:21
Brain cost estimate per brand
about $15 in v1, $45 in v4
brew working tree docs/pricing.md:23
Allowed cost per brand before drafts
up to about $180 a month, proposed
content/ai-and-models/cost-per-brand.md Numbers
First build of every Play
about $18 on Pro, proposed; about $80 for a full demo build
A sheet with the drivers below, monthly for 24 months
v1
New
Measured cost per brand replaces the estimate
v1
Changes
Version prices and autopilot added as each version ships
v2 to v4
New
How we do it
Inputs with no source
Input
Needed for
New brands a month
Growth
Trial to paid rate
Growth
Monthly churn
Growth
Wallet spend per brand a month
Revenue
Fixed costs: people, tools, cloud base
Burn
Cash in bank
Runway
These have no figure in any source content/finance/revenue-plan.md Todaycontent/finance/budget.md Today.
The formulas
Paying brands this month = paying brands last month × the share kept, plus new trials × trial to paid.
Plan revenue = paying brands × the plan price for their version.
Wallet revenue = paying brands × wallet spend per brand.
Variable cost = paying and trial brands × cost per brand, plus first builds × first build cost.
Gross margin = plan revenue plus wallet revenue, less variable cost.
Burn = fixed costs plus variable cost, less revenue, less credit drawn.
Runway = cash ÷ burn.
A worked example, a projection, not a promise
One v1 brand a month on the proposal's numbers:
Line
Low cost case
High cost case
Plan
$79
$79
Brain cost
$15, the spec's estimate
$180, the caps' ceiling
Gross margin before wallet
$64, about 81%
minus $101
The gap between the two columns is the single most important unknown in the model, and only a measured month closes it.
Numbers
Metric
Definition
Where measured
Status
Gross margin per brand
As in formula 5, per brand
The model sheet
Proposed
Burn a month
As in formula 6
Spend ledger plus the sheet
Proposed
Runway in months
As in formula 7
The sheet
Proposed, no cash figure
Credit runway
Credits left ÷ credit drawn a month
Cloud Billing credits
Proposed
Open
Growth inputs. Proposal: model three cases of 5, 15 and 30 new trials a month with a 30% trial to paid rate and 5% monthly churn, labelled projections, until the first real month replaces them.
Cost per brand input. Proposal: use $45 until three partners have one measured month.
Fixed costs and cash. Proposal: Param enters salaries, tools and cash privately in the sheet; this page shows only the runway.
Who owns the sheet? Proposal: Sai builds it, Param reviews it monthly with the investor update.
Sources
brew working tree docs/pricing.md:20-43, untracked
