Aqua Voice vs Paraspeech summary
Aqua Voice is a managed cloud app built on Avalon, Aqua's proprietary speech model, tuned for accuracy (97.3% on the AISpeak benchmark) and available on Mac, Windows, and iPhone with real-time, screen-aware dictation. Paraspeech is a local-first Mac app (plus an iOS/iPad beta) that runs speech recognition on your device by default and adds on-device AI rewriting, with either a subscription or a lifetime option. The honest tradeoff: Aqua needs an internet connection and is a subscription ($8/month billed annually, $96/year, with a free 1,000-word Starter tier), while Paraspeech keeps your data on-device and offers a one-time purchase, but publishes no accuracy benchmark and has no Windows support or screen context.
Two philosophies: managed cloud accuracy vs local-first privacy
Aqua Voice is built around a single idea: put the best possible speech model behind every dictation, everywhere. That means running Avalon, Aqua's proprietary model, as a managed cloud service. You don't download or manage anything, updates are instant, and the same accuracy follows you from your Mac to Windows to your iPhone. The cost is a hard dependency: Aqua needs an internet connection to work.
Paraspeech starts from the opposite end. It keeps transcription on your device by default, so your audio and text never have to leave your Mac, and it layers on a local model for AI rewriting. That is a real privacy win, and it works offline once the models are downloaded. The tradeoffs are the ones local-first designs usually carry: it is Mac-first (with an iOS and iPad beta), there is no Windows app, and on-device models don't come with a published accuracy benchmark to compare against.
What speech model does Paraspeech use?
Paraspeech is openly local-first: it states plainly that supported Mac modes run speech recognition on your device using downloadable local models, and that in those modes your audio and text stay on your Mac. It also discloses a local Qwen model for its on-device AI text rewriting. What it does not publish is exactly which open speech model powers the transcription itself, so we won't guess at one. Subscription plans also add an optional faster cloud mode on top of the local default.
This matters because the model is where dictation quality lives. A local model has to be small enough to run on your laptop, which usually means trading some accuracy (especially on names, jargon, and technical terms) for privacy and offline use. Aqua takes the other side of that trade: Avalon runs in the cloud with no size ceiling, which is how it reaches the accuracy numbers below.
We built Avalon on a benchmark of real clips of developers and AI researchers talking naturally, and measured it against Whisper Large v3:
Model
AISpeak accuracy
Avalon (ours)
97.3%
Whisper Large v3
65.1%
Avalon debuted at #1 among proprietary systems on the public OpenASR leaderboard at its October 2025 debut. On the AISpeak benchmark it scores 97.3%, versus 65.1% for OpenAI's Whisper Large v3, a widely used open reference model. We show this as Aqua's own published proof point. It is a comparison against Whisper as a reference model, not a statement about which model Paraspeech runs, since Paraspeech does not publicly name its transcription model.
See the OpenASR leaderboard, or try Aqua Voice free.
Where Paraspeech wins
Privacy is the clearest one. In Paraspeech's local Mac modes, your audio and text stay on your device, and it works offline once the models are downloaded. If you handle sensitive material or simply don't want dictation leaving your machine, that on-device default is something Aqua's cloud model cannot match: Aqua always sends audio to its servers to transcribe with Avalon.
It is also friendlier to buy once. Paraspeech offers a lifetime purchase (for its local on-device models) alongside its $8.99/month or $89/year subscription. If you would rather avoid a recurring bill, that one-time option is appealing, though the current lifetime price isn't clearly published on their pricing page. Paraspeech also advertises 100+ languages, more than Aqua's 49, and adds on-device AI rewriting via a local model.
For Mac users who want everything to happen locally by default, Paraspeech is squarely built for that world, and it is honest about being Mac-first while its iOS and iPad apps are still in beta.
Where Aqua Voice is better
Higher published accuracy
Avalon scores 97.3% on the AISpeak benchmark and debuted #1 among proprietary systems on the public OpenASR leaderboard at its October 2025 debut. Paraspeech publishes no accuracy benchmark, and local on-device models typically trade some accuracy for privacy, especially on names and technical terms.
Truly cross-platform
Aqua runs on Mac, Windows, and iPhone as a shipping App Store app. Paraspeech is Mac-first with an iOS and iPad beta and no Windows app at all, so if your work spans a PC or you want a mature mobile app, Aqua covers more ground.
Screen-aware, real-time dictation
Aqua reads the context on your screen and formats in real time, so dictated text lands correctly in the app you are using. Paraspeech offers system-wide dictation but without screen context, so it cannot adapt to what you are doing in the same way.
Nothing to download or manage
Because Avalon runs in the cloud, Aqua works instantly with no local models to download, size, or keep updated. Paraspeech downloads local models on first run, and you manage which ones you keep on disk.
Aqua Voice vs Paraspeech: Feature-by-feature comparison
Aqua Voice
Paraspeech
Speech model
Avalon (proprietary, cloud)
Local on-device speech models (transcription model not publicly named)
Cost
$8/mo ($96/yr), free tier
$8.99/mo or $89/yr; lifetime (price not published)
Public benchmark
97.3% (AISpeak)
None published
Technical-term accuracy
Avalon tuned for jargon, code, and names
Depends on local model; no public benchmark
Setup / Processing
Cloud, nothing to download
Downloads local models on first run; on-device after setup
Works offline
❌ (needs internet)
✅ (on-device modes after model download)
Mac
✅
✅
Windows
✅
❌
iPhone
✅ (App Store)
Beta (iOS / iPad)
Real-time + screen context
✅ screen-aware
❌ no screen context
Languages
49
100+
Best for
Cross-platform users who want top accuracy and screen context
Mac users who want fully private, on-device dictation
How to decide
Pick Aqua Voice if: Choose Aqua Voice if you work across Mac, Windows, and iPhone, want the highest published accuracy (97.3% on AISpeak), and value screen-aware, real-time dictation that works with nothing to download. Aqua runs its proprietary Avalon model in the cloud, so it needs an internet connection, and it is $8/month billed annually ($96/year) with a free Starter tier of 1,000 lifetime words.
Pick Paraspeech if: Choose Paraspeech if you are Mac-only (or Mac plus the iOS beta), want your audio and text to stay on your device by default, and prefer a one-time lifetime option over a subscription. Its local-first design is a genuine privacy advantage, and it supports 100+ languages, though it publishes no accuracy benchmark and has no Windows app or screen context.
Aqua Voice is free to start, so you can compare it against Paraspeech on the words you actually dictate before paying anything.
Frequently asked questions
Does Paraspeech use OpenAI Whisper?
Paraspeech does not publicly name the specific speech model behind its transcription, so we don't state that it uses Whisper or any other named model. What it does disclose is that it runs local, on-device speech models on supported Macs, and that it uses a local Qwen model for AI text rewriting. Aqua Voice uses its own proprietary cloud model, Avalon.
Is Paraspeech available on Windows?
No. Paraspeech is Mac-first, with an iOS and iPad beta, and no Windows app as of this writing. Aqua Voice runs on Mac, Windows, and iPhone.
Does Aqua Voice work offline?
No. Aqua is a managed cloud app: it runs Avalon on Aqua's servers, so it needs an internet connection. Paraspeech's local Mac modes are designed to work offline once the models are downloaded, which is one of its main advantages.
How much does each one cost?
Aqua Voice Pro is $8/month billed annually ($96/year), with a free Starter tier of 1,000 lifetime words and a developer API for Avalon at $0.39/hour. Paraspeech is $8.99/month or $89/year with a 7-day free trial, plus a lifetime purchase for its local models (the lifetime price isn't clearly published on their pricing page).
Which one is more accurate?
Aqua publishes 97.3% on the AISpeak benchmark, and Avalon debuted #1 among proprietary systems on the public OpenASR leaderboard at its October 2025 debut. Paraspeech publishes no accuracy benchmark, and local on-device models generally trade some accuracy for privacy. If raw accuracy on technical terms and names matters most, Aqua has the stronger published case.
Is my audio private with Aqua Voice?
Aqua sends audio to its servers to transcribe with Avalon, and Aqua is SOC 2 Type II certified. If your priority is that audio never leaves your device at all, Paraspeech's on-device default is built for exactly that, and it is the honest reason to pick it over Aqua.
How many languages does each support?
Aqua Voice supports 49 languages. Paraspeech advertises 100+ languages across its local and broader models. If you need a long-tail language, check both against your specific one before deciding.