The best AI tools for Windows in 2026
Ten Windows tools, A to Z, sorted by the question that matters on this platform: does it work outside the browser, and does it need a global hotkey to do it.
Windows has a different problem from macOS. There is more already built in — Voice Access and Copilot ship with the OS, and Microsoft 365 Copilot is already licensed at a great many companies — and there is correspondingly less room for a third-party tool that only does what Word already does.
Where the third-party tools still win is outside the Microsoft estate: an IDE, a terminal, a browser-based CRM, a chat client, a PDF. Listed alphabetically, with what each reaches and what it does not.
The list below is in alphabetical order, not ranked. aiCat is one of the tools in it, so any ranking we published would be worth what you would expect — instead, every entry says plainly which situation it is the right answer for, and which it is not.
What was actually compared
- Whether it works outside Office and the browser
- Global hotkeys, and whether they can be changed
- Language coverage beyond English
- Price, including whether a business licence is required
- Whether anything can run offline or on-premise
All 10, A to Z
| Tool | Price from | What it is | Languages | Strongest at |
|---|---|---|---|---|
| aiCat | Free · Premium from $6/mo | Every app, OS-wide | Any language the model speaks | One key that proof-reads, translates, explains, detects, dictates and reads aloud |
| ChatGPT | Free · Plus from $20/mo | Chat assistant | Multilingual | General reasoning that is still at or near the top of the field; Long, open-ended sessions where the task changes as you go |
| DeepL | Free · Pro from ~$9/mo | Translator | 35+, European pairs strongest | Translation quality between European languages that is still the reference point for everyone else; Whole-document translation with the layout kept |
| Dragon | One-off from ~$500 · mobile from ~$15/mo | Professional dictation | Several, English strongest | Accuracy after training on your voice, still the benchmark in medical and legal dictation; Deep voice control of the computer, not only text entry |
| Grammarly | Free · Pro from ~$12/mo | Writing assistant | English-first | Deep grammar, spelling and clarity checking in English; A browser extension plus Office, Google Docs and desktop surfaces |
| LanguageTool | Free · Premium from ~$5/mo | Grammar checker | 30+, genuinely multilingual | Grammar and style checking across thirty-odd languages, not just English; An open-source core you can self-host, which very few competitors offer |
| Microsoft Copilot | Free · business from ~$30/user/mo | Workspace assistant | Multilingual | Deeply wired into Word, Excel, Outlook and Teams; Answers grounded in your organisation's own files |
| QuillBot | Free (word-capped) · from ~$10/mo | Paraphraser | Several, English strongest | Named paraphrase modes with a synonym slider you can actually feel; A summariser and a citation generator in the same account |
| Windows Voice Access | Free | Built-in dictation | Several, English strongest | Free and built in, with full voice control of the OS as well as text; On-device processing on recent builds |
| Wispr Flow | Free (word-capped) · Pro from ~$12/mo | Dictation app | Many, English-first | Dictation typed straight into whatever application you are in; Tidying the filler words and false starts out of what you said |
The list, A to Z
aiCat
For the half of a Windows day that is not Office
Why: Global hotkeys that act on the selection in any application — an IDE, a terminal, a browser-based CRM, a chat client — with dictation on the neighbouring key. Free to start, Premium from $6/month.
Watch out: An installer per machine, and it is newer than the incumbents on this list.
Download for free →ChatGPT
The Windows app everybody already has
Why: A solid desktop app and the strongest general reasoning here, which is what you want for the questions that are actually questions.
Watch out: It does not act on your selection or type into your document. $20/month regardless of use.
aiCat vs ChatGPT →DeepL
For Windows work that crosses European languages
Why: A Windows app with its own selection shortcut, glossaries, and the best raw quality between European pairs.
Watch out: Around 35 languages and a separate subscription from about $9/month.
aiCat vs DeepL →Dragon
For dictation that is a professional obligation
Why: After voice training it is still the accuracy benchmark in medical and legal work, with custom vocabularies and voice control of the machine.
Watch out: Complicated licensing, a one-off cost in the hundreds, an afternoon to set up, and a Windows-centred future.
How the hotkey works on Windows →Grammarly
For English writing across Office and the browser
Why: Windows app, Office add-ins and a browser extension, with the deepest English style engine and team style guides.
Watch out: Stops where the integrations stop, and English-first. From about $12/month.
aiCat vs Grammarly →LanguageTool
For a Windows network where text must stay inside it
Why: The only tool here you can self-host on your own Windows Server at no licence cost, checking thirty-plus languages deterministically.
Watch out: Grammar and style only, and the AI-assisted parts are thinner than the rule engine.
aiCat vs LanguageTool →Microsoft Copilot
The default, if your day is Word, Excel, Outlook and Teams
Why: Deeply wired into the applications a great many Windows companies already run, grounded in the organisation's own files, and often already licensed.
Watch out: From about $30 per user per month for business, usually annual, and it has nothing to say outside Microsoft's applications.
How the hotkey works on Windows →QuillBot
For Windows writing that is mostly rewriting
Why: Predictable paraphrase modes, a summariser and citations, available anywhere a browser is.
Watch out: Paste-based, word-capped free tier, and nothing outside the browser. Premium from about $10/month.
aiCat vs QuillBot →Windows Voice Access
Free, built in, and better than its reputation
Why: On-device on recent Windows 11 builds, types into any application, and controls the OS by voice for anyone who needs that.
Watch out: Windows 11 only, and what you said is what you get — no cleanup, no punctuation from context.
How the hotkey works on Windows →Wispr Flow
For Windows dictation where the output has to be clean
Why: Types tidied English into any Windows application, removing filler and false starts, with a personal dictionary for names and jargon.
Watch out: English-first, a waveform rather than live words, and a free tier capped by words per week. Pro from about $12/month.
aiCat vs Wispr Flow →Hands-on notes
First-person impressions from using these, not a benchmark. They are here because everything above this point is a table, and a table cannot tell you which tool you will still be opening in three months.
Windows laptop, a lot of the day in an IDE and a browser-based helpdesk — which is exactly the ground Copilot does not cover. Install was quick, and unusually for a Windows utility it did not ask for anything alarming. Two things stuck: dictation and text editing are the same pair of keys, so I speak a reply and clean it up without changing tools, and it quietly retains the context I have given it and reuses it where it fits. It is a download with an installer rather than a web app, which is the honest trade-off — and the right one if you want the assistant present in every window rather than in one of them.
Inside Word and Outlook it is genuinely strong and it was already paid for, which is most of its argument. Alt-tab to the IDE and it is not there.
Set it up for a friend who dictates clinical notes. After training it is still more accurate than anything else I have watched, and the setup took an afternoon and cost more than a year of everything else on this page.
Free, built in, and better than it was. For a paragraph of plain text it is enough; for anything you would send to a customer it needs editing afterwards.
One of them is a hotkey. Try it on the text you have open
Free to start with 10 aiCatCoins, no card. Premium starts from $6/month. macOS, Windows and Linux.
aiCat pricing at a glance
| Plan | Price | aiCatCoins / month | Max selection | What it unlocks |
|---|---|---|---|---|
| Free | $0 | 10 | 500 chars | Everything aiCat does, plus free dictation and your own memory |
| Premium | from $6/mo (list $10) | 3 000 | 5 000 chars | Think More, read-aloud, encrypted memory, premium models |
| Team + Offline | from $18/member | 12 000 | 50 000 chars | Edit your memory, MCP access, local models, team sync |
| Enterprise | from $90/member | 150 000 | Unlimited | SSO, audit, best coin rate |
Shortlist of one? Start with the one that costs nothing to try
aiCat's free tier includes every task, 10 aiCatCoins a month, and coins bought outright never expire. macOS, Windows and Linux.
Frequently asked
Is Copilot enough on its own?
If your working day is Word, Excel, Outlook and Teams, quite possibly. If a meaningful part of it is an IDE, a terminal, a browser-based tool or a chat client, Copilot has nothing to say there.
What works in a terminal or a Java IDE?
Very little. aiCat reads the selection at the OS level, which covers them; most other tools rely on browser extensions or Office add-ins.
Is the built-in Windows dictation good enough?
For plain text entry, increasingly yes, and it is free. What it does not do is clean up filler words, punctuate from context, or switch language mid-sentence.
Which operating systems does aiCat support?
macOS (Apple Silicon and Intel), Windows 10/11, and Linux as AppImage, .deb or .rpm.
Is my text sent anywhere?
Only the text you explicitly act on is sent to the model you selected, for that one request. Your history is stored locally on your device. Team + Offline can run a local model so nothing leaves the machine at all.