ChatGPT builder · comparison
00 vs Custom GPTs
Custom GPTs let you shape a ChatGPT assistant with instructions and tools. 00 lets you build a private crew of agents you own — running on your Mac, using any model, and acting across your channels.
| 00 | Custom GPTs | |
|---|---|---|
| Runs locally / offline | Yes | No — inside ChatGPT (cloud) |
| Models | Any — local or any provider | OpenAI models |
| Needs a ChatGPT subscription | No | Often, to build or use |
| What you build | A crew — each agent with its own brain, memory, channels & face | Personas that live inside ChatGPT |
| Messaging channels | WhatsApp, Instagram, email, phone… | Not built in |
| Meeting transcription | Yes — live, on-device | — |
| Where your data lives | On your device | On OpenAI's servers |
| Sharing | It's your private app | Publishable in the GPT Store |
Why choose 00
- Own it and run it locally, on any model — not just OpenAI's.
- One agent per context — different models, separate memories and workspaces, even different billing per agent.
- Give an agent real reach across your channels, with an approval step before anything sends.
- No subscription required.
When Custom GPTs may fit better
- You want to publish a shareable GPT in OpenAI's store and stay inside the ChatGPT ecosystem.
Try 00 — it's free.
Build an agent you own in under a minute, on your Mac.
Frequently asked
Is 00 like building a Custom GPT?
Similar idea — you shape an agent's behaviour, knowledge and tools — but 00's agents run on your Mac, use any model, and can act across your channels.
Can I move my Custom GPT to 00?
You can recreate its instructions and give it skills in 00; there's no direct import, but the setup takes about a minute.
Do 00 agents work outside a chat window?
Yes — they answer on 19 channels (WhatsApp, Instagram, email, even phone), run on schedules, transcribe your meetings, and ask for approval at the notch before anything goes out.
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 Custom GPTs or its makers. All names and trademarks belong to their respective owners.