Your words stay yours
With Ollama or LM Studio, the model runs on your PC. Drafts, emails and notes are never uploaded to a third party for processing.
Local AI writing assistant
A local AI writing assistant for Windows — rewrite, translate, ask
Select text in any app, press a hotkey, and let a language model rewrite, translate, summarize or answer — without switching to a browser. Choose how it runs: free NeuroSwitcher Cloud with nothing to set up, your own OpenAI or OpenRouter key, or fully local with Ollama or LM Studio. You decide where your writing goes — up to keeping it entirely on your own PC.
Side by side
NeuroSwitcher vs Grammarly vs ChatGPT (web).
| Feature | NeuroSwitcher | Grammarly | ChatGPT (web) |
|---|---|---|---|
| Price | Free (beta), BYO model/key | Freemium + sub | Freemium + sub |
| Works on selected text via hotkey | ✓ Any app | Some apps | ✗ Copy-paste |
| Can run locally / offline | ✓ Ollama / LM Studio | ✗ Cloud | ✗ Cloud |
| Your text can stay on your PC | ✓ With local model | ✗ No | ✗ No |
| Choose the model | ✓ Local or OpenAI / OpenRouter | ✗ No | Limited |
| Rewrite / tone / tidy | ✓ Presets + custom | ✓ Yes | ✓ Yes |
| Translate selection | ✓ Yes | Limited | ✓ Manual |
| Ask / answer about selection | ✓ Mini-chat + Replace | ✗ No | ✓ In browser |
| No subscription required | ✓ Local is free | ✗ For premium | ✗ For Plus |
| Bundled with dictation + layout fixing | ✓ Yes | ✗ No | ✗ No |
Comparison reflects publicly known details as of 2026; other products may change.
Why local
Why run your writing assistant locally.
No subscription tax
A local model costs nothing per request, and free NeuroSwitcher Cloud has a daily quota. Bring your own cloud key only when you want a bigger model, and pay the provider directly at their rates.
In-place, not tab-hopping
Rewrite or translate right where you're writing. No copying into a browser, no pasting back — the result is applied inline or offered with a Replace button.
Works across your languages
Rewrite English, translate to Russian, tidy German — with presets you can edit and a free-form "ask anything" mode over your selection.
How it works
Select, hotkey, done.
Highlight text in any app and press the rewrite hotkey to transform it in place, or the ask hotkey to open a small chat window about the selection — with Copy and Replace buttons. Pick a preset (tidy, formal, casual, bullet points, translate) or type your own instruction. Run it on free NeuroSwitcher Cloud, your own OpenAI / OpenRouter key, or a local model via Ollama or LM Studio. Full details on the AI text assistant page.
Fair is fair
When another tool is the better fit.
Grammarly's real-time grammar coaching and polished suggestions are excellent if you write mostly in English and don't mind the cloud. ChatGPT's web app is unbeatable for long, open-ended conversations. NeuroSwitcher is for people who want quick, in-place edits on selected text, the option to keep everything local, and a single tool that also handles dictation and wrong-layout typing.
FAQ
Common questions.
Is there an AI writing assistant that runs locally?
Yes. NeuroSwitcher's AI text assistant can use a local LLM through Ollama or LM Studio, so your selected text is processed on your own machine. You can also point it at your own OpenAI or OpenRouter key for a cloud model.
What is a good offline alternative to Grammarly?
NeuroSwitcher works on selected text in any Windows app via a hotkey and can run against a local model, so it doesn't require uploading your writing. It rewrites, tidies, translates, summarizes and answers about the selection.
Do I have to copy and paste into ChatGPT?
No. Select text in place, press a hotkey, and the result is applied inline or shown in a small chat window with a Replace button — in your editor, email, chat or browser.
Which models and providers are supported?
Three options: built-in NeuroSwitcher Cloud (free daily quota, no setup or key), your own OpenAI / OpenRouter key, or local Ollama and LM Studio (no key needed). You choose the model per provider, and any cloud keys stay in your local config. See the AI assistant page.
Free beta
Bring AI to your text, privately.
Download NeuroSwitcher for Windows 10 and 11, connect a local model or your own key, and rewrite, translate and ask on selected text anywhere. It also adds offline voice dictation and wrong-layout correction.
Download NeuroSwitcher