Why Comet Shortcuts Matter (August 2026)

Comet is now the most-used AI browser — and after OpenAI discontinued ChatGPT Atlas on August 9, 2026, it's the clear default for AI-first browsing. The whole point of an AI browser disappears if every action needs mouse travel, so Comet puts its three core actions on dedicated keys: Alt+A for the Assistant, Alt+S for one-tap page summaries, and Alt+Shift+V for hands-free Voice Mode. Its signature feature is even called Shortcuts: type / in the Assistant to run saved prompt automations like /summarize or /dailybrief that execute multi-step tasks — no code, no extensions.

Because Comet is Chromium-based, everything you know from Chrome carries over: tabs, bookmarks, DevTools, and zoom all use the same keys. The one deliberate difference is the address bar — Enter asks Perplexity, Shift+Enter searches Google — and the Mac-only Opt+Tab recent-tab switcher (Windows users can enable it at comet://settings/shortcuts). Everything below is labeled by where it comes from, so you know which keys are Comet-specific and which are standard browser behavior.

Essential — Start Here

Open / close the Comet Assistant sidebar
AltA
Summarize the current page
AltS
Start Voice Mode (hands-free browsing)
AltShiftV
Open the Shortcuts (slash command) menu in the Assistant
/
Search Google instead of Perplexity (from address bar)
ShiftEnter

Comet Assistant (AI Sidebar)

Open / close Assistant on any page
AltA
Ask for a one-tap page summary (articles, videos, PDFs)
AltS
Talk to the Assistant with Voice Mode
AltShiftV
Reference a specific open tab in your prompt
@tab-name
Send prompt
Enter
New line without sending
ShiftEnter

Comet Shortcuts — Slash Command Automations

Open the Shortcuts menu / create a new Shortcut
/
Run a saved automation by name
/shortcut-name
Example: summarize the page your way
/summarize
Example: compile your recurring morning brief
/dailybrief

Address Bar & Search

Focus the address bar
CtrlL
Ask Perplexity (default search)
Enter
Search the same query on Google instead
ShiftEnter
Find text on the current page
CtrlF

Tabs & Recent-Tab Switcher

Swap between two most recent tabs (enable at comet://settings/shortcuts)
CtrlTab
Cycle recent tabs with visual menu (hold, then tap)
Ctrlhold +Tab
New tab
CtrlT
Close current tab
CtrlW
Reopen last closed tab
CtrlShiftT
New window
CtrlN
New incognito window
CtrlShiftN
Jump to tab 1–8
Ctrl1–8

Browsing Power Keys (Chromium standard)

Bookmark current page
CtrlD
Bookmark all open tabs into a folder
CtrlShiftD
Open history
CtrlH
Open downloads
CtrlJ
Print / save page as PDF
CtrlP
Zoom in / out
Ctrl+/Ctrl-
Reset zoom
Ctrl0
Hard refresh (bypass cache)
CtrlShiftR
Open DevTools
F12

Essential — Start Here

Open / close the Comet Assistant sidebar
A
Summarize the current page
S
Start Voice Mode (hands-free browsing)
V
Swap between two most recent tabs
Tab
Search Google instead of Perplexity (from address bar)
Return

Comet Assistant (AI Sidebar)

Open / close Assistant on any page
A
Ask for a one-tap page summary (articles, videos, PDFs)
S
Talk to the Assistant with Voice Mode
V
Reference a specific open tab in your prompt
@tab-name
Send prompt
Return
New line without sending
Return

Comet Shortcuts — Slash Command Automations

Open the Shortcuts menu / create a new Shortcut
/
Run a saved automation by name
/shortcut-name
Example: summarize the page your way
/summarize
Example: compile your recurring morning brief
/dailybrief

Address Bar & Search

Focus the address bar
L
Ask Perplexity (default search)
Return
Search the same query on Google instead
Return
Search across your open tabs (command bar)
A
Find text on the current page
F

Tabs & Recent-Tab Switcher

Swap between two most recent tabs (tap)
Tab
Cycle recent tabs with visual menu (hold ⌥, tap Tab)
hold +Tab
New tab
T
Close current tab
W
Reopen last closed tab
T
New window
N
New incognito window
N
Jump to tab 1–8
1–8

Browsing Power Keys (Chromium standard)

Bookmark current page
D
Bookmark all open tabs into a folder
D
Open history
Y
Open downloads
L
Print / save page as PDF
P
Zoom in / out
+/-
Reset zoom
0
Hard refresh (bypass cache)
R
Open DevTools
I

Also see: PerplexityChromeGeminiChatGPTClaudemacOS

Comet Shortcuts — Frequently Asked Questions

Does the Comet browser have keyboard shortcuts?

Yes. Comet ships AI-specific shortcuts on top of the standard Chromium set: Alt+A (Opt+A on Mac) opens the Assistant sidebar, Alt+S (Opt+S) summarizes the current page, and Alt+Shift+V (Opt+Shift+V) starts Voice Mode. You can view and remap browser shortcuts at comet://settings/shortcuts.

What is the Comet Assistant shortcut?

Press Alt+A on Windows or Opt+A on Mac to open or close the Comet Assistant sidebar on any page. The Assistant can answer questions about the page you're viewing, compare information across tabs, fill forms, and automate multi-step tasks.

How do I summarize a page in Comet with the keyboard?

Press Alt+S on Windows or Opt+S on Mac. Comet opens the Assistant and asks Perplexity to summarize the current web page — it works on articles, videos, PDFs, and social media threads.

What are Comet Shortcuts (slash commands)?

Comet Shortcuts are saved prompt automations you trigger by typing / in the Assistant followed by a name, such as /summarize or /dailybrief. Type / alone to open the Shortcuts menu, browse saved automations, or create new ones — no coding required. They can run multi-step actions like extracting data, drafting replies, or filling forms.

How do I switch between recent tabs in Comet?

On Mac, tap Opt+Tab to swap between your two most recent tabs, or hold Opt and keep tapping Tab to cycle through a visual menu. On Windows, the same behavior uses Ctrl+Tab but must first be enabled at comet://settings/shortcuts, because Ctrl+Tab cycles next-tab by default.

How do I search Google instead of Perplexity in Comet?

Type your query in the address bar and press Shift+Enter instead of Enter. Enter sends the query to Perplexity's AI answer engine; Shift+Enter runs a classic Google search — useful when you want links rather than an AI answer.

Is ChatGPT Atlas discontinued and what replaces its shortcuts?

Yes — OpenAI shut down the Atlas browser on August 9, 2026 and moved its agentic features into the ChatGPT desktop app. If you're switching from Atlas to Comet, the closest equivalents are: Atlas's Cmd+Shift+A sidebar becomes Alt+A / Opt+A in Comet, and tab management keys are nearly identical since both browsers are Chromium-based.

Can I customize Comet keyboard shortcuts?

Yes. Open comet://settings/shortcuts to view and configure Comet's browser shortcuts, including enabling Cycle Most Recent Tabs on Windows. Slash-command Shortcuts are fully custom — you name them yourself when you create them in the Assistant's / menu.