Voice Dictation in Slack on Windows

May 2026 · 5 min read

The average knowledge worker sends over 200 Slack messages per day. That is thousands of words typed into a chat window. If you could speak those messages instead of type them, you would save 45 to 90 minutes every single day.

dictate.app makes that possible on Windows. No Slack integration required. No special setup. It works because it operates at the OS level, not inside Slack.

How It Works

dictate.app uses clipboard injection. When you release your push-to-talk hotkey, it transcribes your speech using Groq's Whisper API and pastes the result at your cursor position.

In Slack, that means: click into a message box, hold your hotkey, speak, release. Your message appears. Hit Enter to send.

The push-to-talk model matters. You are not broadcasting constantly. You activate it when you want to dictate and release when you are done. This means you can dictate one message, pause, think, then dictate the next sentence. It fits naturally into how Slack messaging already works.

Where It Works in Slack

Channel messages. The main message composer in any channel. Most common use case.

Thread replies. Click into a thread, dictate your reply. Same hotkey.

Direct messages. Works identically. Hold hotkey, speak, release.

Status updates. The status message field accepts dictation.

Slack Canvas. Any text field in Slack Canvas works with clipboard paste.

Why This Is the Highest-ROI Use Case

Most Slack messages are short. 20 to 80 words. Short enough that you think typing is fast. But add it up: 200 messages at even 30 words each is 6,000 words per day. That takes about 75 minutes to type at 80 WPM.

Speaking at 140 WPM, those same 6,000 words take 43 minutes. You save 32 minutes per day from Slack alone.

After a week that is nearly 3 hours back. After a month it is 10 to 12 hours. For $8.99/month, that math is extreme.

Dictating Longer Slack Messages

Push-to-talk works well for longer messages too. Hold the hotkey, speak the full message, release. You can pause mid-sentence and continue speaking while holding the key.

For very long messages, dictate in sections. Speak a paragraph, release, review it, then dictate the next paragraph. This matches how most people write longer Slack messages anyway.

The transcription accuracy from Groq's Whisper model is high. Punctuation comes through when you speak naturally with pauses at sentence breaks. You may need to add commas manually, but sentences and paragraphs are usually clean.

Slack Does Not Have Built-In Voice-to-Text on Windows

Slack offers voice messaging, but that sends an audio clip. The recipient has to listen to it. That is not the same as dictating text.

For composing text messages with your voice on Windows, Slack provides nothing. dictate.app fills that gap.