Context-aware AI grammar, a model that learns your writing style, and 99% accuracy out of the box — no training, no typos, no manual editing.
The Problem
Converting speech to text is the easy part. The hard part — grammar, context, style, domain knowledge — is where most tools fail.
Basic transcription hears phonemes, not meaning. It can't distinguish "there", "their", and "they're" from context, misses homophones, and produces technically correct but semantically wrong text.
Spoken language is full of run-ons, sentence fragments, and filler words. Without an AI layer to clean it up, raw transcription dumps stream-of-consciousness text that still needs manual editing.
Industry jargon, proper nouns, and specialised terminology are mangled by generic models. A lawyer saying "habeas corpus" or an accountant saying "amortisation schedule" gets nonsense output.
Generic tools transcribe the same mistakes session after session. Without on-device learning, you correct the same errors indefinitely and the product never gets better for your use case.
Core Features
Two AI layers work in concert — Deepgram Nova-3 for world-class transcription, then Claude or GPT-4o for intelligent post-processing.
Every dictation session is post-processed by Claude Sonnet or GPT-4o (your own API key). The AI understands context, fixes grammar, removes fillers, applies correct punctuation, and produces document-ready text — not raw transcription.
Voxlen's flywheel engine learns your vocabulary, correction patterns, and preferred phrasing locally — on your device, never on a server. Over sessions it pre-loads your most-used terms and adapts grammar corrections to match your exact writing style.
Words appear as you speak with sub-200ms latency using Deepgram Nova-3's streaming API. No waiting for a recording to finish — dictate naturally and watch your words arrive instantly in any app on your system.
Dictate in one language and have text appear in another. Voxlen supports real-time translation across 30+ languages using the same AI post-processing pipeline. Ideal for multilingual professionals.
Your audio and transcripts never touch Voxlen's servers. Audio goes directly to your chosen provider (Deepgram or OpenAI) under your own API key. For maximum privacy, Privileged Mode processes everything on-device with zero network calls.
One global hotkey works in any app — Word, Outlook, your CRM, browser, chat tool. Voxlen uses OS-level keyboard simulation to inject text without clipboard access, so dictation works everywhere, every time.
Comparison
How Voxlen stacks up against Dragon NaturallySpeaking, Otter.ai, and OpenAI Whisper.
| Feature | Voxlen | Dragon NaturallySpeaking | Otter.ai | Whisper (OpenAI) |
|---|---|---|---|---|
| AI Grammar Correction | ✓ Claude / GPT-4o | ✗ None | ~ Basic | ✗ None |
| On-Device Style Learning | ✓ Always on | ~ Voice profile only | ✗ No | ✗ No |
| Real-Time Streaming | ✓ <200ms | ✓ Yes | ✓ Yes | ✗ Batch only |
| Works on Mac | ✓ Yes | ✗ Discontinued | ✓ Web only | ~ CLI/API only |
| Offline / On-Device Mode | ✓ Privileged Mode | ✓ Yes | ✗ Cloud only | ✓ Yes |
| Universal Hotkey (any app) | ✓ Yes | ✓ Yes | ✗ No | ✗ No |
| Real-Time Translation | ✓ 30+ languages | ✗ No | ~ Limited | ✓ Yes |
| Pricing | $0–$29/mo | $699+ one-time | $16.99/mo | API cost only |
How It Works
Voxlen stacks the world's best speech recognition with the world's best language models for an output no single model can match.
Press your global hotkey anywhere on your system. Voxlen captures your audio and streams it in real-time to Deepgram Nova-3 — the most accurate publicly available speech recognition model — giving you a raw transcript in under 200ms.
The raw transcript is sent to Claude Sonnet or GPT-4o (using your API key). The AI applies grammar correction, removes filler words, resolves contextual ambiguities, and formats the text for your target document type — all in under a second.
The polished, document-ready text is injected directly into whatever app has focus — no clipboard, no paste, just seamless text insertion. Meanwhile, the on-device flywheel logs your patterns to make the next session even more accurate.
Pricing
No per-seat fees, no annual lock-in. Cancel any time.
Free
$0
Forever free
Pro
$29/mo
Billed monthly · cancel any time
Professional
$79/mo
Per team · up to 5 users
Lifetime
$599
One-time payment · yours forever
FAQ