Comparison
Plexon and ChatGPT
A hosted assistant with a desktop app.
Both are assistants you talk to and both have a desktop app. The difference is where the work happens and who holds the data afterwards.
Sources checked 2026-07 at the oldest · ChatGPT’s own site
Where ChatGPT is the better choice
It is the one everybody already has
Your colleagues can open a shared link and it just works. Nothing here matches that, and for a lot of conversations it is the only thing that matters.
Frontier models the day they ship
OpenAI ships its newest model into ChatGPT first. Anything routing to multiple providers is behind by definition.
Mobile and web everywhere
Plexon is a desktop application. If you want the same conversation on a phone, a tablet and a borrowed laptop, that is not what this is.
Nothing to install
A browser tab has no install step, no update step and no machine to be tied to.
Side by side
Every cell in the ChatGPT column carries a source link and the month it was checked. If a row would read the same for both under a neutral label, it is not a difference and it is not here.
| Plexon | ChatGPT | |
|---|---|---|
| What it is | ||
| Form factor | A desktop app with a local daemon doing the work | A hosted service with web, mobile and desktop clients src |
| Models | ||
| Choice of provider | Ten providers, or your own key, or a model on your own machine | OpenAI models src |
| Local models | Ollama, LM Studio, vLLM and any compatible endpoint | No src |
| Where your data lives | ||
| Conversation storage | On your machine. The server holds no session state. | Vendor cloud, with enterprise retention controls src |
| Reach into your apps | ||
| Whose account the connector uses | Yours, signed in locally | Connected through the platform src |
| Doing work unattended | ||
| Runs on a schedule | Cron or interval, per sub-agent, with every run snapshotted | Scheduled tasks src |
| What you see | ||
| Dashboards of live widgets | Boards fed by tools, workflows or a spreadsheet | No src |
| Packaging and distribution | ||
| Private company distribution | Company marketplaces, plus a sign-in gated internal one | Internal GPTs inside Team and Enterprise workspaces src |
You can use both
These are not exclusive. Plexon connects to plenty of things you might also reach through ChatGPT, and plenty of people keep a browser tab open for quick questions and use a desktop assistant for work that touches their own files.