diff --git a/app/main.py b/app/main.py
index 07b74c0..a7751dc 100644
--- a/app/main.py
+++ b/app/main.py
@@ -122,6 +122,12 @@ async def api_usage(request: Request):
         data = await broker_get(identity, "/broker/usage")
         keys = await broker_get(identity, "/broker/keys")
         data["keys"] = keys.get("keys", [])
+        # Co-op-wide model popularity (aggregate, anonymized) for the leaderboard.
+        try:
+            board = await broker_get(identity, "/broker/model-leaderboard")
+            data["coop_models"] = board.get("models", [])
+        except HTTPException:
+            data["coop_models"] = []  # best-effort; never block the main view
         return data
     except HTTPException as e:
         return JSONResponse({"error": e.detail}, status_code=e.status_code)
@@ -318,6 +324,24 @@ PAGE_HTML = """<!DOCTYPE html>
   .model-name { font-weight: 600; font-size: 13px; }
   .model-sub { color: var(--muted); font-size: 12px; }
   .model-spend { font-size: 13px; font-weight: 600; color: var(--ink); text-align: right; }
+
+  /* Leaderboard */
+  .board-row {
+    display: flex; align-items: flex-start; gap: 14px;
+    padding: 12px 0; border-top: 1px solid #f0ede6;
+  }
+  .board-rank {
+    width: 26px; height: 26px; border-radius: 50%;
+    background: #eaf3ea; color: #2f5c30; font-weight: 700; font-size: 13px;
+    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
+    margin-top: 2px;
+  }
+  .board-row:first-child .board-rank { background: var(--green-deep); color: #fff; }
+  .board-main { flex: 1; min-width: 0; }
+  .board-name { font-weight: 600; font-size: 13px; margin-bottom: 5px; }
+  .board-bar { height: 6px; background: #eef0ea; border-radius: 4px; overflow: hidden; }
+  .board-fill { height: 100%; background: var(--green-mid); border-radius: 4px; }
+  .board-sub { color: var(--muted); font-size: 11px; margin-top: 4px; }
   .keys { margin-top: 8px; }
   .key-row {
     display: flex; align-items: center; justify-content: space-between; gap: 12px;
@@ -461,6 +485,12 @@ PAGE_HTML = """<!DOCTYPE html>
     <div class="models" id="models"></div>
   </div>
 
+  <div class="card">
+    <h2>Popular in the co-op</h2>
+    <p class="hint">Which models members are using most, across the whole co-op. A starting point when choosing one.</p>
+    <div class="board" id="coop-board"></div>
+  </div>
+
   <div class="card">
     <h2>API keys</h2>
     <p class="hint">Keys let you use the co-op's AI from your own tools. They draw from the same balance as chat.</p>
@@ -538,6 +568,7 @@ async function load() {
     $('calls').textContent = calls.toLocaleString();
 
     renderModels(d.models || []);
+    renderBoard(d.coop_models || []);
     renderKeys(d.keys || []);
   } catch (e) {
     flash('Could not load usage: ' + e.message, false);
@@ -557,6 +588,27 @@ function renderModels(models) {
   }).join('');
 }
 
+function renderBoard(models) {
+  const el = $('coop-board');
+  if (!models.length) {
+    el.innerHTML = '<div class="empty">Not enough usage data yet — check back soon.</div>';
+    return;
+  }
+  // Rank bar widths are relative to the top model's request count.
+  const top = Math.max(...models.map(m => m.requests || 0), 1);
+  el.innerHTML = models.map((m, i) => {
+    const pct = Math.round(((m.requests || 0) / top) * 100);
+    return '<div class="board-row">' +
+      '<div class="board-rank">' + (i + 1) + '</div>' +
+      '<div class="board-main">' +
+        '<div class="board-name">' + escapeHtml(m.model) + '</div>' +
+        '<div class="board-bar"><div class="board-fill" style="width:' + pct + '%"></div></div>' +
+        '<div class="board-sub">' + (m.requests || 0).toLocaleString() + ' requests by members</div>' +
+      '</div>' +
+      '</div>';
+  }).join('');
+}
+
 function renderKeys(keys) {
   const el = $('keys');
   if (!keys.length) {