Speech-to-text for Slack: dictate messages 5× faster
Type less in Slack. SpeechFlow inserts clean, punctuated messages at your cursor in any channel or DM — no copy-paste, no data stored. Free to start.
Slack is where work happens — but the keyboard slows you down. You speak at 150–180 words per minute and type at 40–60, so long channel replies, threaded debates and detailed DMs cost you real time every day. SpeechFlow closes that gap: hold a key, speak naturally, and clean punctuated text lands straight in your Slack message box — no dictation window, nothing stored.
The problem: Slack is high-volume, low-tolerance
Slack rewards fast, clear communication. But fast for the keyboard means short — which pushes you toward terse replies that miss nuance, or longer ones that take too long to type. Context switches pile up. Threads get abandoned. The real cost isn't any one message; it's the cumulative drag of a hundred half-finished replies across the day.
Apple's built-in dictation can technically type into Slack, but it outputs raw, punctuation-free text full of “um”s and false starts. You end up editing almost as much as you would have typed, erasing the benefit.
How SpeechFlow works in Slack
SpeechFlow is a native macOS app (Apple Silicon, ~50 MB) that works at the system cursor in any app — Slack included. Here's all there is to it:
- Click into the Slack message box — channel reply, thread, DM or Huddle note — wherever your cursor lands.
- Hold Control and speak naturally, at normal conversation pace.
- Release. A cleanup LLM strips fillers, adds punctuation, smooths the tone and inserts the finished text right where your cursor sits.
Because it types at the cursor rather than through any Slack API, it works equally in the Slack Mac app and Slack in any browser — no configuration, no plugin.
What to dictate in Slack
| Slack surface | What to dictate | Why it helps |
|---|---|---|
| Channel replies | Full-context answers to questions, feedback on proposals, status announcements | Say what you actually mean without spending five minutes typing it out |
| Threads | Detailed follow-ups, async debate contributions, long decision summaries | Threads reward thoroughness — dictation makes thorough fast |
| Direct messages | Quick check-ins, project updates, async briefs to teammates | More personal and complete than a few clipped sentences |
| Status updates | Your Slack status description or standup message in a dedicated channel | Speak the update once; a clean sentence appears, ready to send |
| Canvases & bookmarks | Meeting recaps, shared notes, decision logs inside Slack Canvases | Dictate long-form content without leaving Slack |
Why SpeechFlow over Slack's built-in options
Slack's native audio messages are fine for quick thoughts, but the other person has to listen in real time — they can't skim, search or quote you in a reply. SpeechFlow converts your voice into readable, searchable, quotable text. A few concrete differences:
- Clean output — the LLM cleanup pass removes fillers and adds punctuation, so messages read as if you typed them carefully.
- Tone control — the same cleanup adapts formality: a casual DM sounds different from a channel announcement, automatically.
- Privacy — zero data retention. With BYOK, your voice goes directly to your chosen provider (OpenAI, Gemini or Groq); no SpeechFlow server ever stores it.
- Works everywhere — the same shortcut that fills your Slack box works in Notion, Gmail and every other Mac app. See the Notion guide and Gmail guide for the same workflow in other tools.
For the full picture on AI-powered dictation on Mac, the AI dictation overview covers SpeechFlow's approach in depth.
FAQ
Does SpeechFlow work in the Slack desktop app and in Slack on the web?
Yes. It types at the system cursor, so it works in the native Slack Mac app and in any browser where you have Slack open.
Can I use it in Slack threads and DMs, not just main channels?
Yes — click into any Slack text field (channel message box, thread reply, DM, Canvas) and the shortcut works exactly the same way.
Does it store my Slack messages or voice?
No. SpeechFlow has zero data retention. In BYOK mode your audio goes directly to your chosen AI provider; nothing passes through or is stored on a SpeechFlow server.
Is there a free plan?
Yes — 2,500 words per week at no cost, no credit card required. Pro is €10/month or €70/year; BYOK is a one-time €69 for lifetime access.
Does SpeechFlow need any Slack integration or permission to install?
No. There is no Slack app to install and no workspace admin approval needed — SpeechFlow inserts text through the keyboard, so Slack simply receives normal typed input.
Stop typing every Slack message from scratch. Try SpeechFlow free — 2,500 words a week, no card required.