diff --git a/open-sse/handlers/chatCore.js b/open-sse/handlers/chatCore.js
index 38cf1490..21255998 100644
--- a/open-sse/handlers/chatCore.js
+++ b/open-sse/handlers/chatCore.js
@@ -538,6 +538,7 @@ export async function handleChatCore({
 				provider,
 				model,
 				connectionId,
+				apiKey,
 				latency: { ttft: 0, total: Date.now() - requestStartTime },
 				tokens: { prompt_tokens: 0, completion_tokens: 0 },
 				request: extractRequestConfig(body, stream),
@@ -676,6 +677,7 @@ export async function handleChatCore({
 				provider,
 				model,
 				connectionId,
+				apiKey,
 				latency: { ttft: 0, total: Date.now() - requestStartTime },
 				tokens: { prompt_tokens: 0, completion_tokens: 0 },
 				request: extractRequestConfig(body, stream),
diff --git a/open-sse/handlers/chatCore/nonStreamingHandler.js b/open-sse/handlers/chatCore/nonStreamingHandler.js
index f93058fd..d1f4a845 100644
--- a/open-sse/handlers/chatCore/nonStreamingHandler.js
+++ b/open-sse/handlers/chatCore/nonStreamingHandler.js
@@ -286,7 +286,7 @@ export async function handleNonStreamingResponse({ providerResponse, provider, m
 
   const totalLatency = Date.now() - requestStartTime;
   saveRequestDetail(buildRequestDetail({
-    provider, model, connectionId,
+    provider, model, connectionId, apiKey,
     latency: { ttft: totalLatency, total: totalLatency },
     tokens: usage || { prompt_tokens: 0, completion_tokens: 0 },
     request: extractRequestConfig(body, stream),
diff --git a/open-sse/handlers/chatCore/requestDetail.js b/open-sse/handlers/chatCore/requestDetail.js
index b3d24115..de1b3cad 100644
--- a/open-sse/handlers/chatCore/requestDetail.js
+++ b/open-sse/handlers/chatCore/requestDetail.js
@@ -57,11 +57,21 @@ export function extractUsageFromResponse(responseBody) {
   return null;
 }
 
+// Mask API keys before they reach the requestDetails data blob / DB column.
+// Only the prefix is kept — enough to distinguish keys without leaking them.
+export function maskApiKey(key) {
+  if (!key || typeof key !== "string") return undefined;
+  const trimmed = key.trim();
+  if (trimmed.length <= 8) return trimmed.charAt(0) + "***";
+  return trimmed.slice(0, 8) + "***";
+}
+
 export function buildRequestDetail(base, overrides = {}) {
   return {
     provider: base.provider || "unknown",
     model: base.model || "unknown",
     connectionId: base.connectionId || undefined,
+    apiKey: maskApiKey(base.apiKey),
     timestamp: new Date().toISOString(),
     latency: base.latency || { ttft: 0, total: 0 },
     tokens: base.tokens || { prompt_tokens: 0, completion_tokens: 0 },
diff --git a/open-sse/handlers/chatCore/streamingHandler.js b/open-sse/handlers/chatCore/streamingHandler.js
index 15fdfd2f..d37582bd 100644
--- a/open-sse/handlers/chatCore/streamingHandler.js
+++ b/open-sse/handlers/chatCore/streamingHandler.js
@@ -230,6 +230,7 @@ export async function handleStreamingResponse({
 				provider,
 				model,
 				connectionId,
+				apiKey,
 				latency: { ttft: 0, total: Date.now() - requestStartTime },
 				tokens: { prompt_tokens: 0, completion_tokens: 0 },
 				request: extractRequestConfig(body, stream),
@@ -293,6 +294,7 @@ export function buildOnStreamComplete({
 					provider,
 					model,
 					connectionId,
+					apiKey,
 					latency,
 					tokens: usage || { prompt_tokens: 0, completion_tokens: 0 },
 					request: extractRequestConfig(body, stream),
diff --git a/src/app/(dashboard)/dashboard/usage/components/RequestDetailsTab.js b/src/app/(dashboard)/dashboard/usage/components/RequestDetailsTab.js
index af8eb736..d3637df5 100644
--- a/src/app/(dashboard)/dashboard/usage/components/RequestDetailsTab.js
+++ b/src/app/(dashboard)/dashboard/usage/components/RequestDetailsTab.js
@@ -114,9 +114,19 @@ export default function RequestDetailsTab() {
   const [providerNameCache, setProviderNameCache] = useState(null);
   const [filters, setFilters] = useState({
     provider: "",
+    model: "",
+    status: "",
+    connectionId: "",
+    apiKey: "",
     startDate: "",
     endDate: ""
   });
+  const [filterOptions, setFilterOptions] = useState({
+    models: [],
+    apiKeys: [],
+    statuses: [],
+    connections: []
+  });
 
   const fetchProviders = useCallback(async () => {
     try {
@@ -131,6 +141,21 @@ export default function RequestDetailsTab() {
     }
   }, []);
 
+  const fetchFilterOptions = useCallback(async () => {
+    try {
+      const res = await fetch("/api/usage/filters");
+      const data = await res.json();
+      setFilterOptions({
+        models: data.models || [],
+        apiKeys: data.apiKeys || [],
+        statuses: data.statuses || [],
+        connections: data.connections || []
+      });
+    } catch (error) {
+      console.error("Failed to fetch filter options:", error);
+    }
+  }, []);
+
   const fetchDetails = useCallback(async () => {
     setLoading(true);
     try {
@@ -139,6 +164,10 @@ export default function RequestDetailsTab() {
         pageSize: pagination.pageSize.toString()
       });
       if (filters.provider) params.append("provider", filters.provider);
+      if (filters.model) params.append("model", filters.model);
+      if (filters.status) params.append("status", filters.status);
+      if (filters.connectionId) params.append("connectionId", filters.connectionId);
+      if (filters.apiKey) params.append("apiKey", filters.apiKey);
       if (filters.startDate) params.append("startDate", filters.startDate);
       if (filters.endDate) params.append("endDate", filters.endDate);
 
@@ -156,7 +185,8 @@ export default function RequestDetailsTab() {
 
   useEffect(() => {
     fetchProviders();
-  }, [fetchProviders]);
+    fetchFilterOptions();
+  }, [fetchProviders, fetchFilterOptions]);
 
   useEffect(() => {
     fetchDetails();
@@ -176,7 +206,7 @@ export default function RequestDetailsTab() {
   };
 
   const handleClearFilters = () => {
-    setFilters({ provider: "", startDate: "", endDate: "" });
+    setFilters({ provider: "", model: "", status: "", connectionId: "", apiKey: "", startDate: "", endDate: "" });
   };
 
   return (
@@ -204,6 +234,98 @@ export default function RequestDetailsTab() {
               ))}
             </select>
           </div>
+
+          <div className="flex min-w-0 flex-col gap-2">
+            <label htmlFor="model-filter" className="text-sm font-medium text-text-main">Model</label>
+            <select
+              id="model-filter"
+              value={filters.model}
+              onChange={(e) => setFilters({ ...filters, model: e.target.value })}
+              className={cn(
+                "h-9 px-3 rounded-lg border border-black/10 dark:border-white/10 bg-surface",
+                "text-sm text-text-main focus:outline-none focus:ring-2 focus:ring-primary/20",
+                "w-full min-w-0 cursor-pointer"
+              )}
+              style={{ colorScheme: 'auto' }}
+            >
+              <option value="">All Models</option>
+              {filterOptions.models.map((model) => (
+                <option key={model} value={model}>
+                  {model}
+                </option>
+              ))}
+            </select>
+          </div>
+
+          <div className="flex min-w-0 flex-col gap-2">
+            <label htmlFor="status-filter" className="text-sm font-medium text-text-main">Status</label>
+            <select
+              id="status-filter"
+              value={filters.status}
+              onChange={(e) => setFilters({ ...filters, status: e.target.value })}
+              className={cn(
+                "h-9 px-3 rounded-lg border border-black/10 dark:border-white/10 bg-surface",
+                "text-sm text-text-main focus:outline-none focus:ring-2 focus:ring-primary/20",
+                "w-full min-w-0 cursor-pointer"
+              )}
+              style={{ colorScheme: 'auto' }}
+            >
+              <option value="">All Statuses</option>
+              {filterOptions.statuses.map((status) => (
+                <option key={status} value={status}>
+                  {status}
+                </option>
+              ))}
+            </select>
+          </div>
+
+          <div className="flex min-w-0 flex-col gap-2">
+            <label htmlFor="connection-filter" className="text-sm font-medium text-text-main">Account</label>
+            <select
+              id="connection-filter"
+              value={filters.connectionId}
+              onChange={(e) => setFilters({ ...filters, connectionId: e.target.value })}
+              className={cn(
+                "h-9 px-3 rounded-lg border border-black/10 dark:border-white/10 bg-surface",
+                "text-sm text-text-main focus:outline-none focus:ring-2 focus:ring-primary/20",
+                "w-full min-w-0 cursor-pointer"
+              )}
+              style={{ colorScheme: 'auto' }}
+            >
+              <option value="">All Accounts</option>
+              {filterOptions.connections.map((group) => (
+                <optgroup key={group.provider} label={group.name}>
+                  {group.accounts.map((conn) => (
+                    <option key={conn.id} value={conn.id}>
+                      {conn.label}
+                    </option>
+                  ))}
+                </optgroup>
+              ))}
+            </select>
+          </div>
+
+          <div className="flex min-w-0 flex-col gap-2">
+            <label htmlFor="apikey-filter" className="text-sm font-medium text-text-main">API Key</label>
+            <select
+              id="apikey-filter"
+              value={filters.apiKey}
+              onChange={(e) => setFilters({ ...filters, apiKey: e.target.value })}
+              className={cn(
+                "h-9 px-3 rounded-lg border border-black/10 dark:border-white/10 bg-surface",
+                "text-sm text-text-main focus:outline-none focus:ring-2 focus:ring-primary/20",
+                "w-full min-w-0 cursor-pointer"
+              )}
+              style={{ colorScheme: 'auto' }}
+            >
+              <option value="">All API Keys</option>
+              {filterOptions.apiKeys.map((key) => (
+                <option key={key} value={key}>
+                  {key}
+                </option>
+              ))}
+            </select>
+          </div>
           
           <div className="flex min-w-0 flex-col gap-2">
             <label htmlFor="start-date-filter" className="text-sm font-medium text-text-main">Start Date</label>
@@ -238,7 +360,7 @@ export default function RequestDetailsTab() {
             <Button 
               variant="ghost" 
               onClick={handleClearFilters}
-              disabled={!filters.provider && !filters.startDate && !filters.endDate}
+              disabled={!filters.provider && !filters.model && !filters.status && !filters.connectionId && !filters.apiKey && !filters.startDate && !filters.endDate}
               className="w-full"
             >
               Clear Filters
@@ -255,6 +377,7 @@ export default function RequestDetailsTab() {
                 <th className="text-left p-4 text-sm font-semibold text-text-main">Timestamp</th>
                 <th className="text-left p-4 text-sm font-semibold text-text-main">Model</th>
                 <th className="text-left p-4 text-sm font-semibold text-text-main">Provider</th>
+                <th className="text-left p-4 text-sm font-semibold text-text-main">Status</th>
                 <th className="text-right p-4 text-sm font-semibold text-text-main">Input Tokens</th>
                 <th className="text-right p-4 text-sm font-semibold text-text-main">Cached</th>
                 <th className="text-right p-4 text-sm font-semibold text-text-main">Cache Creation</th>
@@ -296,6 +419,20 @@ export default function RequestDetailsTab() {
                          {getProviderName(detail.provider, providerNameCache)}
                        </span>
                      </td>
+                    <td className="p-4 text-sm">
+                      <span className={cn(
+                        "inline-flex items-center gap-1 rounded-full px-2 py-0.5 text-xs font-medium",
+                        detail.status === "error"
+                          ? "bg-red-500/10 text-red-600"
+                          : "bg-green-500/10 text-green-600"
+                      )}>
+                        <span className={cn(
+                          "h-1.5 w-1.5 rounded-full",
+                          detail.status === "error" ? "bg-red-500" : "bg-green-500"
+                        )} />
+                        {detail.status === "error" ? "Error" : "Success"}
+                      </span>
+                    </td>
                     <td className="p-4 text-sm text-text-main text-right font-mono">
                       {getInputTokens(detail.tokens).toLocaleString()}
                     </td>
diff --git a/src/app/api/usage/filters/route.js b/src/app/api/usage/filters/route.js
new file mode 100644
index 00000000..ab17b95b
--- /dev/null
+++ b/src/app/api/usage/filters/route.js
@@ -0,0 +1,66 @@
+import { NextResponse } from "next/server";
+import {
+  getDistinctModels,
+  getDistinctApiKeys,
+  getDistinctStatuses,
+} from "@/lib/requestDetailsDb";
+import { getProviderConnections, getProviderNodes } from "@/lib/localDb";
+import { AI_PROVIDERS, getProviderByAlias } from "@/shared/constants/providers";
+import { isOpenAICompatibleProvider, isAnthropicCompatibleProvider } from "@/shared/constants/providers";
+
+/**
+ * GET /api/usage/filters
+ * Returns option lists for the Usage → Details filter bar:
+ *   models:      distinct model ids seen in requestDetails
+ *   apiKeys:     distinct (masked) api keys seen in requestDetails
+ *   statuses:    distinct status values (success/error)
+ *   connections: provider connections grouped by provider (for <optgroup>)
+ */
+export async function GET() {
+  try {
+    const [models, apiKeys, statuses, connections, nodes] = await Promise.all([
+      getDistinctModels(),
+      getDistinctApiKeys(),
+      getDistinctStatuses(),
+      getProviderConnections(),
+      getProviderNodes(),
+    ]);
+
+    const nodeNameMap = {};
+    for (const node of nodes || []) {
+      if (node.id && node.name) nodeNameMap[node.id] = node.name;
+    }
+
+    const byProvider = {};
+    for (const c of connections) {
+      const isCompatible =
+        isOpenAICompatibleProvider(c.provider) ||
+        isAnthropicCompatibleProvider(c.provider);
+      const baseName = isCompatible
+        ? c.name || nodeNameMap[c.provider] || c.providerSpecificData?.nodeName
+        : c.name;
+      const providerName =
+        getProviderByAlias(c.provider)?.name || AI_PROVIDERS[c.provider]?.name || c.provider || "unknown";
+      const key = c.provider || "unknown";
+      if (!byProvider[key]) {
+        byProvider[key] = { provider: key, name: providerName, accounts: [] };
+      }
+      byProvider[key].accounts.push({
+        id: c.id,
+        label: baseName || providerName,
+      });
+    }
+
+    const connectionsList = Object.values(byProvider).sort((a, b) =>
+      a.name.localeCompare(b.name)
+    );
+
+    return NextResponse.json({ models, apiKeys, statuses, connections: connectionsList });
+  } catch (error) {
+    console.error("[API] Failed to get usage filters:", error);
+    return NextResponse.json(
+      { error: "Failed to fetch usage filters" },
+      { status: 500 }
+    );
+  }
+}
diff --git a/src/app/api/usage/request-details/route.js b/src/app/api/usage/request-details/route.js
index 9b154497..0ba000a5 100644
--- a/src/app/api/usage/request-details/route.js
+++ b/src/app/api/usage/request-details/route.js
@@ -17,6 +17,7 @@ export async function GET(request) {
     const model = searchParams.get("model");
     const connectionId = searchParams.get("connectionId");
     const status = searchParams.get("status");
+    const apiKey = searchParams.get("apiKey");
     const startDate = searchParams.get("startDate");
     const endDate = searchParams.get("endDate");
     
@@ -43,6 +44,7 @@ export async function GET(request) {
     if (model) filter.model = model;
     if (connectionId) filter.connectionId = connectionId;
     if (status) filter.status = status;
+    if (apiKey) filter.apiKey = apiKey;
     if (startDate) filter.startDate = startDate;
     if (endDate) filter.endDate = endDate;
     
diff --git a/src/lib/db/index.js b/src/lib/db/index.js
index 03ac710b..e62f35ad 100644
--- a/src/lib/db/index.js
+++ b/src/lib/db/index.js
@@ -65,6 +65,7 @@ export {
 // Request details
 export {
   saveRequestDetail, getRequestDetails, getRequestDetailById, getDistinctProviders,
+  getDistinctModels, getDistinctApiKeys, getDistinctStatuses,
 } from "./repos/requestDetailsRepo.js";
 
 // Export/import full DB
diff --git a/src/lib/db/migrations/002-request-details-apikey.js b/src/lib/db/migrations/002-request-details-apikey.js
new file mode 100644
index 00000000..7d0f77fe
--- /dev/null
+++ b/src/lib/db/migrations/002-request-details-apikey.js
@@ -0,0 +1,14 @@
+// Adds an indexed apiKey column to requestDetails so the Details tab can
+// filter by (masked) API key without parsing the JSON data blob.
+export default {
+  version: 2,
+  name: "request-details-apikey",
+  up(db) {
+    // Idempotent: fresh DBs already get the column from TABLES schema.
+    const existing = db.all(`PRAGMA table_info(requestDetails)`) || [];
+    if (!existing.some((c) => c.name === "apiKey")) {
+      db.exec(`ALTER TABLE requestDetails ADD COLUMN apiKey TEXT`);
+    }
+    db.exec(`CREATE INDEX IF NOT EXISTS idx_rd_apikey ON requestDetails(apiKey)`);
+  },
+};
diff --git a/src/lib/db/migrations/index.js b/src/lib/db/migrations/index.js
index 13fb4bfe..d3e8f9bd 100644
--- a/src/lib/db/migrations/index.js
+++ b/src/lib/db/migrations/index.js
@@ -2,8 +2,9 @@
 // Each migration: { version: number, name: string, up(db): void }
 // Versions MUST be unique and monotonically increasing.
 import m001 from "./001-initial.js";
+import m002 from "./002-request-details-apikey.js";
 
-export const MIGRATIONS = [m001].sort((a, b) => a.version - b.version);
+export const MIGRATIONS = [m001, m002].sort((a, b) => a.version - b.version);
 
 export function latestVersion() {
   return MIGRATIONS.length ? MIGRATIONS[MIGRATIONS.length - 1].version : 0;
diff --git a/src/lib/db/repos/requestDetailsRepo.js b/src/lib/db/repos/requestDetailsRepo.js
index defd294b..e0cebf01 100644
--- a/src/lib/db/repos/requestDetailsRepo.js
+++ b/src/lib/db/repos/requestDetailsRepo.js
@@ -92,6 +92,7 @@ async function flushToDatabase() {
             connectionId: item.connectionId || null,
             timestamp: item.timestamp,
             status: item.status || null,
+            apiKey: item.apiKey || null,
             latency: item.latency || {},
             tokens: item.tokens || {},
             request: truncateField(item.request, config.maxJsonSize),
@@ -102,8 +103,8 @@ async function flushToDatabase() {
           };
 
           db.run(
-            `INSERT INTO requestDetails(id, timestamp, provider, model, connectionId, status, data) VALUES(?, ?, ?, ?, ?, ?, ?) ON CONFLICT(id) DO UPDATE SET timestamp = excluded.timestamp, provider = excluded.provider, model = excluded.model, connectionId = excluded.connectionId, status = excluded.status, data = excluded.data`,
-            [record.id, record.timestamp, record.provider, record.model, record.connectionId, record.status, stringifyJson(record)]
+            `INSERT INTO requestDetails(id, timestamp, provider, model, connectionId, status, apiKey, data) VALUES(?, ?, ?, ?, ?, ?, ?, ?) ON CONFLICT(id) DO UPDATE SET timestamp = excluded.timestamp, provider = excluded.provider, model = excluded.model, connectionId = excluded.connectionId, status = excluded.status, apiKey = excluded.apiKey, data = excluded.data`,
+            [record.id, record.timestamp, record.provider, record.model, record.connectionId, record.status, record.apiKey, stringifyJson(record)]
           );
         }
 
@@ -151,6 +152,7 @@ export async function getRequestDetails(filter = {}) {
   if (filter.model) { conds.push("model = ?"); params.push(filter.model); }
   if (filter.connectionId) { conds.push("connectionId = ?"); params.push(filter.connectionId); }
   if (filter.status) { conds.push("status = ?"); params.push(filter.status); }
+  if (filter.apiKey) { conds.push("apiKey = ?"); params.push(filter.apiKey); }
   if (filter.startDate) { conds.push("timestamp >= ?"); params.push(new Date(filter.startDate).toISOString()); }
   if (filter.endDate) { conds.push("timestamp <= ?"); params.push(new Date(filter.endDate).toISOString()); }
 
@@ -181,6 +183,24 @@ export async function getDistinctProviders() {
   return rows.map((r) => r.provider);
 }
 
+export async function getDistinctModels() {
+  const db = await getAdapter();
+  const rows = db.all(`SELECT DISTINCT model FROM requestDetails WHERE model IS NOT NULL AND model != '' ORDER BY model ASC`);
+  return rows.map((r) => r.model);
+}
+
+export async function getDistinctApiKeys() {
+  const db = await getAdapter();
+  const rows = db.all(`SELECT DISTINCT apiKey FROM requestDetails WHERE apiKey IS NOT NULL AND apiKey != '' ORDER BY apiKey ASC`);
+  return rows.map((r) => r.apiKey);
+}
+
+export async function getDistinctStatuses() {
+  const db = await getAdapter();
+  const rows = db.all(`SELECT DISTINCT status FROM requestDetails WHERE status IS NOT NULL AND status != '' ORDER BY status ASC`);
+  return rows.map((r) => r.status);
+}
+
 export async function getRequestDetailById(id) {
   const db = await getAdapter();
   const row = db.get(`SELECT data FROM requestDetails WHERE id = ?`, [id]);
diff --git a/src/lib/db/schema.js b/src/lib/db/schema.js
index ddbdcede..973c6bd7 100644
--- a/src/lib/db/schema.js
+++ b/src/lib/db/schema.js
@@ -3,7 +3,7 @@
 // pre-change safety backup in migrate.js: when the stored version is lower,
 // one lightweight DB backup is taken before applying schema changes. Forgetting
 // to bump only skips that backup — it does NOT break the additive auto-sync.
-export const SCHEMA_VERSION = 1;
+export const SCHEMA_VERSION = 2;
 
 export const PRAGMA_SQL = `
 PRAGMA journal_mode = WAL;
@@ -144,6 +144,7 @@ export const TABLES = {
 			model: "TEXT",
 			connectionId: "TEXT",
 			status: "TEXT",
+			apiKey: "TEXT",
 			data: "TEXT NOT NULL",
 		},
 		indexes: [
@@ -151,6 +152,7 @@ export const TABLES = {
 			"CREATE INDEX IF NOT EXISTS idx_rd_provider ON requestDetails(provider)",
 			"CREATE INDEX IF NOT EXISTS idx_rd_model ON requestDetails(model)",
 			"CREATE INDEX IF NOT EXISTS idx_rd_conn ON requestDetails(connectionId)",
+			"CREATE INDEX IF NOT EXISTS idx_rd_apikey ON requestDetails(apiKey)",
 		],
 	},
 };
diff --git a/src/lib/requestDetailsDb.js b/src/lib/requestDetailsDb.js
index 0daaa8a4..37fdd3c8 100644
--- a/src/lib/requestDetailsDb.js
+++ b/src/lib/requestDetailsDb.js
@@ -1,4 +1,5 @@
 // Shim → re-export from new SQLite-based DB layer (src/lib/db/)
 export {
   saveRequestDetail, getRequestDetails, getRequestDetailById, getDistinctProviders,
+  getDistinctModels, getDistinctApiKeys, getDistinctStatuses,
 } from "@/lib/db/index.js";
diff --git a/src/lib/usageDb.js b/src/lib/usageDb.js
index d56d58a0..6a80231c 100644
--- a/src/lib/usageDb.js
+++ b/src/lib/usageDb.js
@@ -4,4 +4,5 @@ export {
   saveRequestUsage, getUsageHistory, getUsageStats, getChartData,
   appendRequestLog, getRecentLogs,
   saveRequestDetail, getRequestDetails, getRequestDetailById,
+  getDistinctModels, getDistinctApiKeys, getDistinctStatuses,
 } from "@/lib/db/index.js";