Dictation for Slack Messages, Threads and DMs

Slack is a stream of small writing jobs: a quick answer in a thread, a status update in a channel, a careful DM to a teammate who is stuck. Whispek lets you speak those messages into the Slack message box and review them before you press Enter.

Whispek is voice typing for Windows, Mac and Linux. It works right in Slack, desktop or browser, with no Slack app to install and nothing for your admin to approve.

Reviewed October 19, 2026

Why Slack eats your typing time

The problem with Slack is not one long document. It is volume.

  • Dozens of short replies. Each one is only two or three sentences, but you write them all day, and each one means stopping what you were doing.
  • Tone matters more than length. A rushed one-liner can read as curt. Writing a friendlier version takes extra time you don't feel you have.
  • Explanations get cut short. When someone asks "why did we change this?", the full answer is easier to say than to type, so people often type a vague one and get follow-up questions.
  • Mixed-language teams. If teammates work in different languages, you may write the message twice or run it through a separate translator.

You already know what you want to say. Just say it.

Download Whispek free

How to dictate in Slack with Whispek in 3 steps

  1. Click the message box. Open the channel, thread or DM in Slack and put your cursor in the message field.
  2. Hold the thought, press the shortcut, speak. Use your voice shortcut (Right Alt on Windows, Right Option on macOS, Left Ctrl + Left Alt + Space on Linux). With Live transcription display on, the original transcript appears above the capsule while you talk. Stop recording when you finish.
  3. Read it once, then send. Whispek inserts the text into the message box. Slack still waits for you to press Enter, so you can fix a word or add an emoji first.

Tip: for thread replies, start by naming who and what you are answering. "Maya, on the release date question..." gives the reply context without extra typing.

Whispek features that fit Slack — Style for chat

Pick Casual or Very casual in Style for team chat and Formal for customer channels. Auto cleanup takes out the "um"s either way.

Whispek features that fit Slack — Snippets for things you paste every day

Set a trigger word that expands into text you share often, such as your email address or a sign-off for external channels.

Whispek features that fit Slack — Voice translation for cross-language channels

Speak Chinese, post in English. Press your Translation shortcut, say the message in your language, and the translation lands in the box.

Whispek features that fit Slack — Dictionary for teammates and tools

Add colleagues' names, channel jargon and internal tool names to your Dictionary so a quick reply doesn't need three corrections.

Whispek features that fit Slack — History for the message you deleted by mistake

If you clear the message box or switch channels before sending, open Whispek History, find the dictation and reuse it.

Example: a status update in a channel

You say: "Quick update on the login bug. We found it, it's the token refresh, fix is in review and should ship tomorrow morning. I'll post here when it's live."

That goes into the message box as a tidy three-sentence update. You read it, press Enter, and get back to work.

Writing longer messages to people outside Slack? The same habit works for voice typing in Gmail. For notes you want to keep, try voice typing in Notion.

voice typing in Gmailvoice typing in Notion

Pricing

Whispek is free every 7 days. Pro is unlimited for $8.25/month, billed yearly ($99), or $12 month to month. Prices exclude tax.

Looking at other dictation tools too? See Whispek vs Wispr Flow.

pricing pageWhispek vs Wispr Flow

Talk, don't type.

Install Whispek, open your busiest channel and reply to the next three threads out loud.

Download Whispek free

FAQ

Visit the help center
Can I use dictation in Slack with Whispek?

Yes. Click the Slack message box, hold Right Alt and talk. Works in the Slack app and the browser, on Windows, Mac and Linux.

Do I need a Slack admin to approve Whispek?

No. Whispek is not installed into your Slack workspace. It is a desktop app that inserts text where your cursor is, so there is nothing to add to Slack itself.

Does Whispek send the message for me?

No. Whispek inserts the text into the message box. You review it and press Enter in Slack when you are ready.

Can I make dictated Slack messages sound casual?

In Style > Text, Casual or Very casual keeps capitalization and punctuation light for chat, while Formal uses full capitalization and punctuation. Review the wording and tone yourself. In Style > Cleanup, choose Original to keep your words as spoken.

Can I write a Slack message in another language by voice?

Yes. Choose a target language in Settings > Voice & translation > Translate to and use Translation. You can set its shortcut on the Home screen and review the result before sending.

Talk, don't type.

Up to 4x faster than typing. Windows, Mac and Linux. Free every 7 days.