Cloud AI assistant · comparison
00 vs ChatGPT
ChatGPT is a polished cloud assistant powered by OpenAI's models. 00 is a free macOS app for building AI agents you actually own — running locally, using any model, and acting across your own channels.
| 00 | ChatGPT | |
|---|---|---|
| Runs on your Mac / offline | Yes — local models run fully offline | No — cloud service |
| Where your data lives | On your device | On OpenAI's servers |
| Models | Any — local, Anthropic, OpenAI, Google & more | OpenAI models |
| Number of agents | As many as you want, each customised | One assistant (plus custom GPTs) |
| Messaging channels | WhatsApp, Instagram, Signal, email, phone… | Not built in |
| Custom identity | Custom pixel-art face per agent | Name + instructions |
| Encrypted local key vault | Yes | — |
| Price | Free app — pay providers directly, or nothing for local | Free tier; paid plans |
Why choose 00
- Own your agents and your data — everything can run on your Mac.
- Not locked to one provider: use local models, or bring keys for OpenAI, Anthropic, Google and more.
- Put an agent where people already are — WhatsApp, Instagram, email, even phone calls.
- Free to run, and truly free with local models.
When ChatGPT may fit better
- You want the simplest cloud chatbot with OpenAI's newest models and zero setup.
- You don't need local/offline use, ownership, or messaging-channel automation.
Try 00 — it's free.
Build an agent you own in under a minute, on your Mac.
Frequently asked
Is 00 a good ChatGPT alternative?
Yes — if you want AI agents you own that run locally and can act across your messaging channels, rather than a single cloud assistant.
Can I use GPT models in 00?
Yes. Add your OpenAI API key and pick a GPT model for any agent — or run entirely on local models instead.
Does 00 send my data to OpenAI?
Only if you choose an OpenAI model and add your key; then requests go directly from your Mac to OpenAI. Run a local model and nothing leaves your device.
Is 00 free?
The app is free. You only pay the model providers or channels you choose to connect — or nothing at all with local models.
More comparisons
This comparison reflects 00's perspective and our understanding of publicly available information; other products change often — check their own sites for the latest. 00 is an independent project and is not affiliated with, endorsed by, or sponsored by ChatGPT or its makers. All names and trademarks belong to their respective owners.