Billing

Sentio charges usage via Sentio Units and bills monthly (or optional annually with discount).

The billing model is as follow:

All usage inside processor bill to the owner of project
All API usage bill to the caller of API (identify by API key)
Every UI usage is free of charge.

Sentio Units

Every logical metrics in watching stage costs 4000 Sentio Units
Every logical event-logs and entities in watching stage costs 8000 Sentio Units
Every logical webhook in watching stage costs 8000 Sentio Units
Every node RPC costs 25 in watching state Sentio Units (List will be updated)
- EVM calls involving the state.
- get table item for Aptos
All above cost zero in Backfill stage
All visualizations cost zero Sentio Unit
Every Sentio GraphQL API request costs 100 Sentio Unit
Every Sentio SQL API request costs 1000 Sentio Units

✅
"Logical" means the emission from the processor. We do not charge the actual physical storage data, which could often be more than what users actually submit in processor.

Backfill

Processors are running in 2 stages. First Backfill and then Watching

We DO NOT charge any Sentio Units for backfill and only charge processing latest.

Concurrent Backfill

Since backfill is free, we limit the concurrent backfill one user can run. Currently, free tier can run 1 concurrent backfill.

How the usage of multi-version is computed?

If you enabled multi-version (say the 2 versions are X and Y, X being the new version), the backfill stage is always free. Once version X reaches the state of Watching, the Sentio units usage of both X and Y will be counted until you switch to the active version to X. (then the usage of Y will no longer be counted). Similarly, if you abandon version X, then the usage of X will no longer be counted.

Limits

Number of Series

We limit the total number of #series you can submit in one processor. Current the limit is set to 10,000.

Number of Projects

Free tier users can have at most 3 projects.

Number of Alerts

Free tier users can have at most 3 alerts.