How to Set Up Offline Speech Recognition on Windows — A Complete Guide
Most speech recognition tools send your audio to the cloud. That’s a problem if you care about privacy, work with sensitive data, have unreliable internet, or simply don’t want your voice recordings on someone else’s server.
The good news: fully offline, local speech recognition on Windows is now genuinely good, thanks to OpenAI’s Whisper AI. Here’s how to set it up.
Why Go Offline?
- Privacy — audio never leaves your machine; important for healthcare, legal, corporate, and personal use
- Reliability — no dependence on internet connectivity or cloud service uptime
- Speed — no network round trip; transcription happens instantly on your hardware
- Cost — no API fees or subscription requirements for the transcription itself
- Compliance — satisfies data residency and privacy regulations (HIPAA, GDPR considerations)
Option 1: ScribAI (Easiest — 60 Seconds)
ScribAI bundles Whisper AI into a native Windows app with push-to-talk dictation. No Python, no command line, no manual model downloads.
Setup steps
- Download ScribAI (99 MB installer)
- Run the installer — no admin rights needed
- Open ScribAI → Settings → select Local mode
- Choose a Whisper model (Tiny for speed, Base for balance, Small for accuracy)
- ScribAI downloads the model automatically (one-time, ~75–500 MB)
- Hold Ctrl+Win+A and speak — text appears at your cursor
That’s it. From this point forward, all speech recognition happens on your PC. No internet needed. No audio sent anywhere.
Choosing a model
- Tiny (~75 MB) — fastest, good for short messages on older hardware
- Base (~150 MB) — best balance of speed and accuracy for most users
- Small (~500 MB) — highest local accuracy, needs a decent CPU (GPU optional)
No GPU is required for any model. A modern Intel or AMD processor handles Tiny and Base easily. Small benefits from a GPU but works without one.
Option 2: Whisper via Python (For Developers)
If you’re a developer who wants to use Whisper directly for transcribing audio files or building custom pipelines:
Prerequisites
- Python 3.8+ installed
- pip (Python package manager)
- Optional: NVIDIA GPU + CUDA for faster processing
Installation
- Open a terminal: pip install openai-whisper
- Install ffmpeg (required for audio processing): winget install ffmpeg
- Test with a file: whisper audio.wav --model base --language en
This transcribes audio files offline. It does not provide real-time dictation — you’d need to build recording, hotkey, and clipboard-paste functionality yourself. That’s essentially what ScribAI does on top of Whisper.
Option 3: Windows Offline Speech Recognition
Windows has a built-in offline speech recognition option in Settings → Privacy → Speech. You can download an offline speech pack for your language. This enables basic offline dictation via Win+H.
Limitations
- Significantly lower accuracy than Whisper
- Limited language support for offline packs
- Still uses the toggle-based Win+H interface
- No model selection or quality control
For casual use it’s fine. For serious dictation work, Whisper-based solutions are meaningfully better. See our detailed comparison.
Hardware Requirements for Offline Whisper
| Model | RAM Needed | CPU | GPU | Speed (30s audio) |
|---|---|---|---|---|
| Tiny | ~200 MB | Any modern | Not needed | ~2–4 sec |
| Base | ~400 MB | Any modern | Not needed | ~4–8 sec |
| Small | ~1 GB | i5/Ryzen 5+ | Helps (~2× faster) | ~6–15 sec |
Speeds are approximate and depend on your specific hardware. Most users on modern PCs won’t notice any meaningful delay with Tiny or Base models.
Privacy: What “Offline” Actually Means
When ScribAI runs in Local mode:
- Audio is captured from your microphone only while you hold the hotkey
- Audio is processed by Whisper on your CPU/GPU
- The transcription result is placed on your clipboard and pasted
- Audio is immediately discarded — not saved to disk, not logged, not transmitted
No network requests are made during transcription. You can verify this by disconnecting from the internet entirely — Local mode works identically.
Read the full details in our privacy policy.
Get Offline Dictation in 60 Seconds
Download ScribAI, select Local mode, choose a model. That’s it — fully offline Whisper AI dictation for free.
⬇ Download ScribAI Free (99 MB)