diff --git a/background.js b/background.js
index 781b9df..6ef7eb5 100644
--- a/background.js
+++ b/background.js
@@ -19,6 +19,8 @@ let queue = Promise.resolve();
 let queuedCount = 0;
 let processing = false;
 let iconTimer = null;
+let timingStats = { count: 0, mean: 0, m2: 0, total: 0 };
+let currentStart = 0;
 
 function setIcon(path) {
     if (browser.browserAction) {
@@ -106,6 +108,7 @@ async function applyAiRules(idsInput) {
         updateActionIcon();
         queue = queue.then(async () => {
             processing = true;
+            currentStart = Date.now();
             queuedCount--;
             updateActionIcon();
             try {
@@ -141,9 +144,27 @@ async function applyAiRules(idsInput) {
                     }
                 }
                 processing = false;
+                const elapsed = Date.now() - currentStart;
+                currentStart = 0;
+                const t = timingStats;
+                t.count += 1;
+                t.total += elapsed;
+                const delta = elapsed - t.mean;
+                t.mean += delta / t.count;
+                t.m2 += delta * (elapsed - t.mean);
+                await storage.local.set({ classifyStats: t });
                 showTransientIcon("resources/img/done.png");
             } catch (e) {
                 processing = false;
+                const elapsed = Date.now() - currentStart;
+                currentStart = 0;
+                const t = timingStats;
+                t.count += 1;
+                t.total += elapsed;
+                const delta = elapsed - t.mean;
+                t.mean += delta / t.count;
+                t.m2 += delta * (elapsed - t.mean);
+                await storage.local.set({ classifyStats: t });
                 logger.aiLog("failed to apply AI rules", { level: 'error' }, e);
                 showTransientIcon("resources/img/error.png");
             }
@@ -199,6 +220,10 @@ async function clearCacheForMessages(idsInput) {
         logger.setDebug(store.debugLogging);
         await AiClassifier.setConfig(store);
         await AiClassifier.init();
+        const savedStats = await storage.local.get('classifyStats');
+        if (savedStats.classifyStats && typeof savedStats.classifyStats === 'object') {
+            Object.assign(timingStats, savedStats.classifyStats);
+        }
         aiRules = Array.isArray(store.aiRules) ? store.aiRules.map(r => {
             if (r.actions) return r;
             const actions = [];
@@ -390,6 +415,16 @@ async function clearCacheForMessages(idsInput) {
         }
     } else if (msg?.type === "sortana:getQueueCount") {
         return { count: queuedCount + (processing ? 1 : 0) };
+    } else if (msg?.type === "sortana:getTiming") {
+        const t = timingStats;
+        const std = t.count > 1 ? Math.sqrt(t.m2 / (t.count - 1)) : 0;
+        return {
+            count: queuedCount + (processing ? 1 : 0),
+            current: currentStart ? Date.now() - currentStart : -1,
+            average: t.mean,
+            total: t.total,
+            stddev: std
+        };
     } else {
         logger.aiLog("Unknown message type, ignoring", {level: 'warn'}, msg?.type);
     }
diff --git a/modules/AiClassifier.js b/modules/AiClassifier.js
index de267b6..3c526f8 100644
--- a/modules/AiClassifier.js
+++ b/modules/AiClassifier.js
@@ -323,6 +323,13 @@ async function clearCache() {
   }
 }
 
+async function getCacheSize() {
+  if (!gCacheLoaded) {
+    await loadCache();
+  }
+  return gCache.size;
+}
+
 function classifyTextSync(text, criterion, cacheKey = null) {
   if (!Services?.tm?.spinEventLoopUntil) {
     throw new Error("classifyTextSync requires Services");
@@ -407,4 +414,4 @@ async function init() {
   await loadCache();
 }
 
-export { classifyText, classifyTextSync, setConfig, removeCacheEntries, clearCache, getReason, getCachedResult, buildCacheKey, buildCacheKeySync, init };
+export { classifyText, classifyTextSync, setConfig, removeCacheEntries, clearCache, getReason, getCachedResult, buildCacheKey, buildCacheKeySync, getCacheSize, init };
diff --git a/options/options.html b/options/options.html
index 6ddefa7..ed1ef41 100644
--- a/options/options.html
+++ b/options/options.html
@@ -180,6 +180,9 @@
                         <tr><th>Rule count</th><td id="rule-count"></td></tr>
                         <tr><th>Cache entries</th><td id="cache-count"></td></tr>
                         <tr><th>Queue items</th><td id="queue-count"></td></tr>
+                        <tr><th>Current run time</th><td id="current-time">--:--</td></tr>
+                        <tr><th>Average run time</th><td id="average-time">--:--</td></tr>
+                        <tr><th>Total run time</th><td id="total-time">--:--</td></tr>
                     </tbody>
                 </table>
                 <button class="button is-danger" id="clear-cache" type="button">Clear Cache</button>
diff --git a/options/options.js b/options/options.js
index 7c1e595..997d7f7 100644
--- a/options/options.js
+++ b/options/options.js
@@ -305,20 +305,59 @@ document.addEventListener('DOMContentLoaded', async () => {
     const ruleCountEl = document.getElementById('rule-count');
     const cacheCountEl = document.getElementById('cache-count');
     const queueCountEl = document.getElementById('queue-count');
+    const currentTimeEl = document.getElementById('current-time');
+    const averageTimeEl = document.getElementById('average-time');
+    const totalTimeEl = document.getElementById('total-time');
+    let timingLogged = false;
     ruleCountEl.textContent = (defaults.aiRules || []).length;
     cacheCountEl.textContent = defaults.aiCache ? Object.keys(defaults.aiCache).length : 0;
 
-    async function refreshQueueCount() {
+    function format(ms) {
+        if (ms < 0) return '--:--';
+        return (ms / 1000).toFixed(1) + 's';
+    }
+
+    async function refreshMaintenance() {
         try {
-            const { count } = await browser.runtime.sendMessage({ type: 'sortana:getQueueCount' });
-            queueCountEl.textContent = count;
+            const stats = await browser.runtime.sendMessage({ type: 'sortana:getTiming' });
+            queueCountEl.textContent = stats.count;
+            currentTimeEl.classList.remove('has-text-success','has-text-danger');
+            let arrow = '';
+            if (stats.current >= 0) {
+                if (stats.stddev > 0 && stats.current - stats.average > stats.stddev) {
+                    currentTimeEl.classList.add('has-text-danger');
+                    arrow = ' ▲';
+                } else if (stats.stddev > 0 && stats.average - stats.current > stats.stddev) {
+                    currentTimeEl.classList.add('has-text-success');
+                    arrow = ' ▼';
+                }
+                currentTimeEl.textContent = format(stats.current) + arrow;
+            } else {
+                currentTimeEl.textContent = '--:--';
+            }
+            averageTimeEl.textContent = stats.count ? format(stats.average) : '--:--';
+            totalTimeEl.textContent = format(stats.total);
+            if (!timingLogged) {
+                logger.aiLog('retrieved timing stats', {debug: true});
+                timingLogged = true;
+            }
         } catch (e) {
             queueCountEl.textContent = '?';
+            currentTimeEl.textContent = '--:--';
+            averageTimeEl.textContent = '--:--';
+            totalTimeEl.textContent = '--:--';
+        }
+
+        ruleCountEl.textContent = document.querySelectorAll('#rules-container .rule').length;
+        try {
+            cacheCountEl.textContent = await AiClassifier.getCacheSize();
+        } catch {
+            cacheCountEl.textContent = '?';
         }
     }
 
-    refreshQueueCount();
-    setInterval(refreshQueueCount, 2000);
+    refreshMaintenance();
+    setInterval(refreshMaintenance, 2000);
 
     document.getElementById('clear-cache').addEventListener('click', async () => {
         await AiClassifier.clearCache();