Free, Pro, or your own instance

Free and Pro run on big-agi.com, signed in: Free is the product, Pro adds a subscription on top. Open is the same core, MIT-licensed, deployed and updated by you. The list of AI services is identical in all three.

What each tier includes

	Open - you host it	Free	Pro
800+ models, on your keys	New models land here first
Beam - several models on one question
AI Inspector - the literal request, as sent
Personas	-
Rambles	-
Browsing, web search, premium voice	You supply and run them
Account, cloud backup, sync	-	Account only - no backup, no sync	1 GB: personas and chats, unlimited devices
Email support from the builder	-	-

Teams arrange the Business plan by contact on big-agi.com.

Who bills you

Two bills, and only one is ours.

Bill	Who charges you	For what
Model usage	Your AI service, directly	Every request, priced per token
Big-AGI Pro	Big-AGI, $10.99/mo	Backup, sync, 1 GB, email support

Big-AGI never meters, caps, or takes a cut of model usage. Host Open and you pay whoever runs the machine, nothing to us.

The key behind the first bill comes from an AI service account you create, not the service's consumer chat account. Fund it there, by card or prepaid credit. Cap the spend in the service's console: connect an AI service, keep your key safe.

Keeping the subscription you already pay

If your subscription works for you, keep it. ChatGPT, Claude and Gemini give a lot away free, and their paid plans are subsidised - good deals for what they cover.

Big-AGI runs on API keys, not on those subscriptions: connect an AI service walks the console. Consider it when you want several models on one question, vendors side by side, or a local model next to the cloud ones. The consumer extras - voice on a phone, memory, connectors, research agents - have no equivalent here. Feature by feature: the comparison page.

Switching later

Chats and settings move in every direction as one file: back up, restore and import. One caveat, one direction: personas built on the hosted app carry more than the Open creator holds, so they arrive simplified on your own instance.

When this doesn't work

Sync is the only thing a server refuses:

Message	What it means	What to do
Sync not available	You are not subscribed to Pro.	Subscribe, or keep working locally; local data is untouched.
Storage quota exceeded. Please upgrade your plan or free up space.	You are at 100% of cloud space: uploads stop, reads and deletes still work.	Delete synced items, or move to the larger quota.

Missing chats: Where did my chats go?. Devices: Will my chats appear on my other devices?.

Related

• Your first chat
• Connect an AI service
• Subscribe, change, or cancel Pro
• Back up, restore and import