Talk DAT! (often written TalkDAT) is in public beta for Windows and Mac. Install the Windows build from the Microsoft Store, or take the notarized Mac disk image for Apple silicon on macOS 14 or later.
Slack's desktop app has no dictation of its own, as of September 2026. So dictating a Slack message means using something outside Slack that can put text into the message box. There are three practical ways to do that, and they differ mostly in where the text lands and what happens when it does not.
As of September 2026, the Slack desktop application does not ship a dictation feature. The message box is a normal text field, which is the useful part: anything that can type into a focused field can write a Slack message. That leaves three options.
First, the dictation built into your operating system. On Windows that is voice typing on Win+H, and per Microsoft's own support documentation it needs an internet connection. macOS includes its own system dictation, switched on in System Settings. Second, a dictation overlay such as Talk DAT!, which sits above every app and delivers finished text into whichever window has focus. Third, dictate somewhere else and paste, which is slower but is the fallback when the first two misbehave.
On Windows: click into the Slack message box, press Win+H, and speak. Voice typing needs a connection, so it is not an option on an offline or network-restricted machine, and it delivers a fairly literal transcription.
On macOS: enable dictation in System Settings first, then click into the message box and use the shortcut you assigned. Check Apple's own documentation for the current shortcut and whether your language needs a download, because those details have moved between releases.
What the built-in options cannot do. They type into the focused field and stop there. There is no local history, no recovery when the text does not land, and no way to teach either of them the names your team actually uses.
Install from the Microsoft Store on Windows, or use the notarized disk image on an Apple silicon Mac running macOS 14 or later. Both are public betas. Run the guided first run, which covers the microphone, permissions, the trigger, and a safe test dictation. Talk DAT! is free, and no account is needed to dictate.
Then, every time: click into the Slack message box, hold Ctrl+Win, say the message, and release. Talk DAT! transcribes, cleans the result, and delivers it into the app focused when delivery completes, using a verified clipboard write and paste, Shift+Insert, or simulated typing. It does not special-case Slack; it delivers into whatever has focus, which is why the same trigger serves the message box, a thread, and the search field. Triggers are not limited to the keyboard either, as the push-to-talk page sets out.
Text goes to the window you are in when it finishes. The text goes to the window focused when delivery completes, so if you tab away while it finishes, the message follows you. A successful paste call also does not prove the application accepted the text, which is what the recovery paths below are for.
Two writing styles sit one click apart in the Talk DAT! menu. Chill, the default, keeps your own phrasing and tidies it. Executive is a fuller professional rewrite that can restructure prose, add headings, and remove profanity. For most Slack messages Chill is the better fit, because Slack messages usually sound better casual.
Spoken punctuation is honoured, spoken enumerations become real numbered lists, and times, records, fractions, and figures come out the way you would have typed them. Cleanup levels run from close to verbatim through to polished.
Every team has names and terms that speech recognition gets wrong. Add them in Words and Phrases: a preferred spelling plus optional sounds-like aliases, so a colleague's name or an internal project comes out right. Your own terms outrank the built-in defaults, a raw dictionary editor takes a batch paste, and a vocabulary pack can be carried to another machine.
Four industry packs are available, Military, Medical, Legal, and Aviation, totalling nearly 1,400 curated terms. Proper nouns from the foreground window title can become transient local hints ranked below your explicit terms; that reads the window title only, not the screen. Spoken shortcuts can also expand a phrase into a reusable block, with live date, time, day, and clipboard fields.
Nothing was recorded. Talk DAT! warns after roughly two silent seconds, and Mic Doctor adds a live level bar, immediate input switching, and a three-second check for silence, low level, clipping, and room noise. The text went to the wrong place. Delivery targets the final focused window, so stay put until the Talk DAT! bar shows it is done. The paste did not take. The finished text stays on your clipboard and in local History, and copy-only mode makes that the normal behaviour.
The trigger stopped working. Exact and nested hotkey conflicts are explained in plain language, but the guard is a warning rather than a block, so a conflicting chord can still have been saved. Everything ran and the result was still wrong. Talk DAT! starts a backup recording on your computer before the microphone opens, so from History you can play the clip, send it through the pipeline again, or copy whatever text was produced before the failure. The Windows overview covers the install side.
Straight answers, matching what the product actually does today.
No. As of September 2026, the Slack desktop application does not ship a dictation feature of its own. The message box is an ordinary text field, so dictating a Slack message means using your operating system's dictation, a dictation overlay that types into the focused window, or dictating elsewhere and pasting.
Click into the message box, then either press Win+H for Windows voice typing, which needs an internet connection per Microsoft support, or hold your Talk DAT! trigger, which defaults to Ctrl+Win. Talk DAT! transcribes, cleans the result, and delivers it into the app focused when delivery completes.
Enable dictation in System Settings and use the shortcut you assigned, checking Apple's own documentation for the current shortcut and any language download. Talk DAT! also has a public beta for Apple silicon Macs on macOS 14 or later, distributed as a notarized disk image.
Because delivery targets the window focused when delivery completes, not the one you started in. If you switch applications while the result is still being finished, the text follows your focus. Wait for the Talk DAT! bar to show it is done before moving, or use copy-only mode and paste it yourself.
Add them in Words and Phrases with a preferred spelling and optional sounds-like aliases. Your terms outrank the built-in defaults, a raw dictionary editor accepts a batch paste, and the vocabulary pass runs again after formatting. Four industry packs, Military, Medical, Legal, and Aviation, add nearly 1,400 curated terms.
Windows voice typing needs a connection, per Microsoft support. Talk DAT! can run speech recognition on the Local route after a one-time on-device model download, so that part works without a network. Slack itself still needs a connection to send the message.
Install Talk DAT!, click into the message box, and hold Ctrl+Win. Free to use, with no account needed to dictate.
