diff --git a/.github/pr-assets/control-ui-chat-detail/context-collapsed-full-date.png b/.github/pr-assets/control-ui-chat-detail/context-collapsed-full-date.png
new file mode 100644
index 00000000000..333ab7c2ce9
Binary files /dev/null and b/.github/pr-assets/control-ui-chat-detail/context-collapsed-full-date.png differ
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e18e9fdd81a..46aae3bafd8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -235,6 +235,7 @@ Docs: https://docs.openclaw.ai
 - Telegram/config: include generated Telegram channel config schema metadata in packaged plugin manifests so forum-topic/group config is accepted before runtime loads. Thanks @steipete.
 - CLI/Claude: include user-configured `mcp.servers` in the strict Claude CLI MCP bundle config, matching Pi runs while preserving the OpenClaw loopback override. Fixes #70909. Thanks @keishingu.
 - Browser/tool: keep explicit AI snapshots from inheriting the efficient role-snapshot default and preserve numeric Playwright AI refs, so `--format ai` remains a real AI snapshot path. Fixes #62550. Thanks @ly85206559.
+- Control UI/chat: collapse assistant token/model context details behind an explicit Context disclosure and show full dates in message footers, making historical transcript timing clear without noisy default metadata.
 - Gateway/config: keep in-process config patch reload comparisons on the resolved source snapshot when `${VAR}` env refs are restored on disk, avoiding false full gateway restarts for unchanged gateway/plugin secrets. Fixes #71208. Thanks @robbiethompson18.
 - Slack/messages: serialize write-client requests and whole outbound sends per target so rapid multi-message Slack replies preserve send order. Fixes #69101. (#69105) Thanks @nightq and @ztexydt-cqh.
 - Slack/messages: keep Slack bot tokens out of internal message-ordering and DM cache keys. Thanks @steipete.
diff --git a/ui/src/styles/chat/grouped.css b/ui/src/styles/chat/grouped.css
index 24c2626b91b..c19deb16fee 100644
--- a/ui/src/styles/chat/grouped.css
+++ b/ui/src/styles/chat/grouped.css
@@ -46,7 +46,9 @@
 .chat-group-footer {
   display: flex;
   gap: 8px;
-  align-items: baseline;
+  row-gap: 5px;
+  align-items: center;
+  flex-wrap: wrap;
   margin-top: 6px;
 }
 
@@ -60,6 +62,7 @@
   font-size: 11px;
   color: var(--muted);
   opacity: 0.7;
+  line-height: 1.2;
 }
 
 /* ── Group footer action buttons (TTS, delete) ── */
@@ -382,14 +385,81 @@ img.chat-avatar {
 .msg-meta {
   display: inline-flex;
   align-items: center;
-  gap: 8px;
+  gap: 6px;
   font-size: 11px;
   line-height: 1;
   color: var(--muted);
-  margin-top: 4px;
   flex-wrap: wrap;
 }
 
+.msg-meta__summary {
+  list-style: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  min-height: 22px;
+  padding: 2px 7px 2px 5px;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-full);
+  background: color-mix(in srgb, var(--bg-hover, rgba(255, 255, 255, 0.08)) 65%, transparent);
+  cursor: pointer;
+  user-select: none;
+  transition:
+    border-color var(--duration-fast) ease-out,
+    background var(--duration-fast) ease-out,
+    color var(--duration-fast) ease-out;
+}
+
+.msg-meta__summary::-webkit-details-marker {
+  display: none;
+}
+
+.msg-meta__summary:hover,
+.msg-meta__summary:focus-visible {
+  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
+  background: var(--bg-hover, rgba(255, 255, 255, 0.08));
+  color: var(--fg);
+}
+
+.msg-meta__summary:focus-visible {
+  outline: 2px solid var(--accent);
+  outline-offset: 2px;
+}
+
+.msg-meta__summary-icon {
+  display: inline-flex;
+  width: 12px;
+  height: 12px;
+  transition: transform 120ms ease-out;
+}
+
+.msg-meta__summary-icon svg {
+  width: 12px;
+  height: 12px;
+  fill: none;
+  stroke: currentColor;
+  stroke-width: 2;
+}
+
+.msg-meta[open] .msg-meta__summary-icon {
+  transform: rotate(90deg);
+}
+
+details.msg-meta:not([open]) .msg-meta__details {
+  display: none;
+}
+
+.msg-meta__details {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  flex-wrap: wrap;
+  padding: 3px 7px;
+  border: 1px solid var(--border);
+  border-radius: var(--radius-full);
+  background: rgba(255, 255, 255, 0.03);
+}
+
 .msg-meta__tokens,
 .msg-meta__cache,
 .msg-meta__cost,
diff --git a/ui/src/ui/chat/grouped-render.test.ts b/ui/src/ui/chat/grouped-render.test.ts
index 8318c0918c7..b566db02330 100644
--- a/ui/src/ui/chat/grouped-render.test.ts
+++ b/ui/src/ui/chat/grouped-render.test.ts
@@ -5,7 +5,9 @@ import { afterEach, describe, expect, it, vi } from "vitest";
 import { getSafeLocalStorage } from "../../local-storage.ts";
 import type { MessageGroup } from "../types/chat-types.ts";
 import {
+  formatChatTimestampForDisplay,
   renderMessageGroup,
+  renderStreamingGroup,
   resolveAssistantTextAvatar,
   resetAssistantAttachmentAvailabilityCacheForTest,
 } from "./grouped-render.ts";
@@ -304,6 +306,10 @@ describe("grouped chat rendering", () => {
       },
       1_000_000,
     );
+    const meta = cached.querySelector<HTMLDetailsElement>("details.msg-meta");
+    expect(meta).not.toBeNull();
+    expect(meta?.open).toBe(false);
+    expect(meta?.querySelector("summary")?.textContent).toContain("Context");
     expect(cached.querySelector(".msg-meta__ctx")?.textContent).toBe("44% ctx");
     expect(cached.textContent).toContain("R438.4k");
     expect(cached.textContent).toContain("W307");
@@ -320,6 +326,34 @@ describe("grouped chat rendering", () => {
     expect(outputHeavy.querySelector(".msg-meta__ctx")?.textContent).toBe("10% ctx");
   });
 
+  it("renders full dates with message timestamps", () => {
+    const container = document.createElement("div");
+    const timestamp = Date.UTC(2026, 3, 24, 18, 30);
+
+    renderAssistantMessage(container, {
+      role: "assistant",
+      content: "Done",
+      timestamp,
+    });
+
+    const time = container.querySelector<HTMLTimeElement>(".chat-group-timestamp");
+    const display = formatChatTimestampForDisplay(timestamp);
+    expect(time).not.toBeNull();
+    expect(time?.dateTime).toBe(display.dateTime);
+    expect(time?.textContent?.trim()).toBe(display.label);
+    expect(time?.getAttribute("title")).toBe(display.title);
+  });
+
+  it("renders full dates with streaming timestamps", () => {
+    const container = document.createElement("div");
+    const timestamp = Date.UTC(2026, 3, 24, 18, 30);
+
+    render(renderStreamingGroup("Working", timestamp), container);
+
+    const time = container.querySelector<HTMLTimeElement>(".chat-group-timestamp");
+    expect(time?.textContent?.trim()).toBe(formatChatTimestampForDisplay(timestamp).label);
+  });
+
   it("renders configured local user names and avatar variants", () => {
     const renderUser = (opts: Partial<RenderMessageGroupOptions>) => {
       const container = document.createElement("div");
diff --git a/ui/src/ui/chat/grouped-render.ts b/ui/src/ui/chat/grouped-render.ts
index aa240a6bcf9..429492c7a92 100644
--- a/ui/src/ui/chat/grouped-render.ts
+++ b/ui/src/ui/chat/grouped-render.ts
@@ -49,6 +49,53 @@ type AssistantAttachmentAvailability =
 const assistantAttachmentAvailabilityCache = new Map<string, AssistantAttachmentAvailability>();
 const ASSISTANT_ATTACHMENT_UNAVAILABLE_RETRY_MS = 5_000;
 
+export type ChatTimestampDisplay = {
+  label: string;
+  title: string;
+  dateTime: string;
+};
+
+export function formatChatTimestampForDisplay(timestamp: number): ChatTimestampDisplay {
+  const date = new Date(timestamp);
+  if (!Number.isFinite(date.getTime())) {
+    return {
+      label: "Unknown date",
+      title: "Unknown date",
+      dateTime: "",
+    };
+  }
+
+  return {
+    label: date.toLocaleString([], {
+      month: "short",
+      day: "numeric",
+      year: "numeric",
+      hour: "numeric",
+      minute: "2-digit",
+    }),
+    title: date.toLocaleString([], {
+      weekday: "long",
+      month: "long",
+      day: "numeric",
+      year: "numeric",
+      hour: "numeric",
+      minute: "2-digit",
+      second: "2-digit",
+      timeZoneName: "short",
+    }),
+    dateTime: date.toISOString(),
+  };
+}
+
+function renderChatTimestamp(timestamp: number) {
+  const display = formatChatTimestampForDisplay(timestamp);
+  return html`
+    <time class="chat-group-timestamp" datetime=${display.dateTime} title=${display.title}>
+      ${display.label}
+    </time>
+  `;
+}
+
 export function resetAssistantAttachmentAvailabilityCacheForTest() {
   assistantAttachmentAvailabilityCache.clear();
   for (const blobUrl of managedImageBlobUrlResolvedCache.values()) {
@@ -238,10 +285,6 @@ export function renderStreamingGroup(
   basePath?: string,
   authToken?: string | null,
 ) {
-  const timestamp = new Date(startedAt).toLocaleTimeString([], {
-    hour: "numeric",
-    minute: "2-digit",
-  });
   const name = assistant?.name ?? "Assistant";
 
   return html`
@@ -260,7 +303,7 @@ export function renderStreamingGroup(
         )}
         <div class="chat-group-footer">
           <span class="chat-sender-name">${name}</span>
-          <span class="chat-group-timestamp">${timestamp}</span>
+          ${renderChatTimestamp(startedAt)}
         </div>
       </div>
     </div>
@@ -316,10 +359,6 @@ export function renderMessageGroup(
         : normalizedRole === "tool"
           ? "tool"
           : "other";
-  const timestamp = new Date(group.timestamp).toLocaleTimeString([], {
-    hour: "numeric",
-    minute: "2-digit",
-  });
 
   // Aggregate usage/cost/model across all messages in the group
   const meta = extractGroupMeta(group, opts.contextWindow ?? null);
@@ -365,8 +404,7 @@ export function renderMessageGroup(
         )}
         <div class="chat-group-footer">
           <span class="chat-sender-name">${who}</span>
-          <span class="chat-group-timestamp">${timestamp}</span>
-          ${renderMessageMeta(meta)}
+          ${renderChatTimestamp(group.timestamp)} ${renderMessageMeta(meta)}
           ${normalizedRole === "assistant" && isTtsSupported() ? renderTtsButton(group) : nothing}
           ${opts.onDelete
             ? renderDeleteButton(opts.onDelete, normalizedRole === "user" ? "left" : "right")
@@ -495,7 +533,15 @@ function renderMessageMeta(meta: GroupMeta | null) {
     return nothing;
   }
 
-  return html`<span class="msg-meta">${parts}</span>`;
+  return html`
+    <details class="msg-meta">
+      <summary class="msg-meta__summary" title="Show message context details">
+        <span class="msg-meta__summary-icon" aria-hidden="true">${icons.chevronRight}</span>
+        <span>Context</span>
+      </summary>
+      <span class="msg-meta__details">${parts}</span>
+    </details>
+  `;
 }
 
 function extractGroupText(group: MessageGroup): string {