feat(stats): show model users metric

packages/stats/app/src/routes/[lab]/[model].tsx

@@ -340,6 +340,7 @@ function ModelOverview(props: { data: StatsModelData | null }) {
         {(data) => (
           <div data-component="model-metric-grid">
             <MetricCard label="Tokens" value={formatTokens(data().totals.tokens)} detail="last two months" />
+            <MetricCard label="Users" value={formatUsers(data().totals.users)} detail="unique users" />
             <MetricCard label="Sessions" value={formatInteger(data().totals.sessions)} detail="completed sessions" />
             <MetricCard
               label="Token Share"

packages/stats/core/src/domain/home.ts

@@ -53,6 +53,7 @@ export type StatsModelData = {
   tokenChange: number
   totals: {
     sessions: number
+    users: number
     tokens: number
     cost: number
     tokensPerSession: number
@@ -285,6 +286,7 @@ function buildStatsModelData(
     tokenChange: percentChange(current.totalTokens, previous.totalTokens),
     totals: {
       sessions: current.sessions,
+      users: current.uniqueUsers,
       tokens: current.totalTokens,
       cost: round(microcentsToDollars(current.totalCostMicrocents), 2),
       tokensPerSession: current.sessions > 0 ? Math.round(current.totalTokens / current.sessions) : 0,