diff --git a/src/auto-reply/reply/mentions.ts b/src/auto-reply/reply/mentions.ts
index 4c8aca16998..ca20905efae 100644
--- a/src/auto-reply/reply/mentions.ts
+++ b/src/auto-reply/reply/mentions.ts
@@ -21,6 +21,8 @@ function deriveMentionPatterns(identity?: { name?: string; emoji?: string }) {
 }
 
 const BACKSPACE_CHAR = "\u0008";
+const mentionRegexCompileCache = new Map<string, RegExp[]>();
+const MAX_MENTION_REGEX_COMPILE_CACHE_KEYS = 512;
 
 export const CURRENT_MESSAGE_MARKER = "[Current message - respond to this]";
 
@@ -54,7 +56,15 @@ function resolveMentionPatterns(cfg: OpenClawConfig | undefined, agentId?: strin
 
 export function buildMentionRegexes(cfg: OpenClawConfig | undefined, agentId?: string): RegExp[] {
   const patterns = normalizeMentionPatterns(resolveMentionPatterns(cfg, agentId));
-  return patterns
+  if (patterns.length === 0) {
+    return [];
+  }
+  const cacheKey = patterns.join("\u001f");
+  const cached = mentionRegexCompileCache.get(cacheKey);
+  if (cached) {
+    return [...cached];
+  }
+  const compiled = patterns
     .map((pattern) => {
       try {
         return new RegExp(pattern, "i");
@@ -63,6 +73,12 @@ export function buildMentionRegexes(cfg: OpenClawConfig | undefined, agentId?: s
       }
     })
     .filter((value): value is RegExp => Boolean(value));
+  mentionRegexCompileCache.set(cacheKey, compiled);
+  if (mentionRegexCompileCache.size > MAX_MENTION_REGEX_COMPILE_CACHE_KEYS) {
+    mentionRegexCompileCache.clear();
+    mentionRegexCompileCache.set(cacheKey, compiled);
+  }
+  return [...compiled];
 }
 
 export function normalizeMentionText(text: string): string {
diff --git a/src/routing/resolve-route.ts b/src/routing/resolve-route.ts
index 307315e6e18..e76be518419 100644
--- a/src/routing/resolve-route.ts
+++ b/src/routing/resolve-route.ts
@@ -204,6 +204,16 @@ type EvaluatedBindingsCache = {
 
 const evaluatedBindingsCacheByCfg = new WeakMap<OpenClawConfig, EvaluatedBindingsCache>();
 const MAX_EVALUATED_BINDINGS_CACHE_KEYS = 2000;
+const resolvedRouteCacheByCfg = new WeakMap<
+  OpenClawConfig,
+  {
+    bindingsRef: OpenClawConfig["bindings"];
+    agentsRef: OpenClawConfig["agents"];
+    sessionRef: OpenClawConfig["session"];
+    byKey: Map<string, ResolvedAgentRoute>;
+  }
+>();
+const MAX_RESOLVED_ROUTE_CACHE_KEYS = 4000;
 
 type EvaluatedBindingsIndex = {
   byPeer: Map<string, EvaluatedBinding[]>;
@@ -411,6 +421,33 @@ function normalizeBindingMatch(
   };
 }
 
+function resolveRouteCacheForConfig(cfg: OpenClawConfig): Map<string, ResolvedAgentRoute> {
+  const existing = resolvedRouteCacheByCfg.get(cfg);
+  if (
+    existing &&
+    existing.bindingsRef === cfg.bindings &&
+    existing.agentsRef === cfg.agents &&
+    existing.sessionRef === cfg.session
+  ) {
+    return existing.byKey;
+  }
+  const byKey = new Map<string, ResolvedAgentRoute>();
+  resolvedRouteCacheByCfg.set(cfg, {
+    bindingsRef: cfg.bindings,
+    agentsRef: cfg.agents,
+    sessionRef: cfg.session,
+    byKey,
+  });
+  return byKey;
+}
+
+function formatRouteCachePeer(peer: RoutePeer | null): string {
+  if (!peer || !peer.id) {
+    return "-";
+  }
+  return `${peer.kind}:${peer.id}`;
+}
+
 function hasGuildConstraint(match: NormalizedBindingMatch): boolean {
   return Boolean(match.guildId);
 }
@@ -474,13 +511,40 @@ export function resolveAgentRoute(input: ResolveAgentRouteInput): ResolvedAgentR
   const teamId = normalizeId(input.teamId);
   const memberRoleIds = input.memberRoleIds ?? [];
   const memberRoleIdSet = new Set(memberRoleIds);
+  const dmScope = input.cfg.session?.dmScope ?? "main";
+  const identityLinks = input.cfg.session?.identityLinks;
+  const shouldLogDebug = shouldLogVerbose();
+  const parentPeer = input.parentPeer
+    ? {
+        kind: normalizeChatType(input.parentPeer.kind) ?? input.parentPeer.kind,
+        id: normalizeId(input.parentPeer.id),
+      }
+    : null;
+
+  const routeCache =
+    !shouldLogDebug && !identityLinks ? resolveRouteCacheForConfig(input.cfg) : null;
+  const routeCacheKey = routeCache
+    ? [
+        channel,
+        accountId,
+        formatRouteCachePeer(peer),
+        formatRouteCachePeer(parentPeer),
+        guildId || "-",
+        teamId || "-",
+        memberRoleIds.length > 0 ? memberRoleIds.toSorted().join(",") : "-",
+        dmScope,
+      ].join("\t")
+    : "";
+  if (routeCache && routeCacheKey) {
+    const cachedRoute = routeCache.get(routeCacheKey);
+    if (cachedRoute) {
+      return { ...cachedRoute };
+    }
+  }
 
   const bindings = getEvaluatedBindingsForChannelAccount(input.cfg, channel, accountId);
   const bindingsIndex = getEvaluatedBindingIndexForChannelAccount(input.cfg, channel, accountId);
 
-  const dmScope = input.cfg.session?.dmScope ?? "main";
-  const identityLinks = input.cfg.session?.identityLinks;
-
   const choose = (agentId: string, matchedBy: ResolvedAgentRoute["matchedBy"]) => {
     const resolvedAgentId = pickFirstExistingAgentId(input.cfg, agentId);
     const sessionKey = buildAgentSessionKey({
@@ -495,7 +559,7 @@ export function resolveAgentRoute(input: ResolveAgentRouteInput): ResolvedAgentR
       agentId: resolvedAgentId,
       mainKey: DEFAULT_MAIN_KEY,
     }).toLowerCase();
-    return {
+    const route = {
       agentId: resolvedAgentId,
       channel,
       accountId,
@@ -503,9 +567,16 @@ export function resolveAgentRoute(input: ResolveAgentRouteInput): ResolvedAgentR
       mainSessionKey,
       matchedBy,
     };
+    if (routeCache && routeCacheKey) {
+      routeCache.set(routeCacheKey, route);
+      if (routeCache.size > MAX_RESOLVED_ROUTE_CACHE_KEYS) {
+        routeCache.clear();
+        routeCache.set(routeCacheKey, route);
+      }
+    }
+    return route;
   };
 
-  const shouldLogDebug = shouldLogVerbose();
   const formatPeer = (value?: RoutePeer | null) =>
     value?.kind && value?.id ? `${value.kind}:${value.id}` : "none";
   const formatNormalizedPeer = (value: NormalizedPeerConstraint) => {
@@ -529,12 +600,6 @@ export function resolveAgentRoute(input: ResolveAgentRouteInput): ResolvedAgentR
     }
   }
   // Thread parent inheritance: if peer (thread) didn't match, check parent peer binding
-  const parentPeer = input.parentPeer
-    ? {
-        kind: normalizeChatType(input.parentPeer.kind) ?? input.parentPeer.kind,
-        id: normalizeId(input.parentPeer.id),
-      }
-    : null;
   const baseScope = {
     guildId,
     teamId,