# API: Usage-based API billing

[Changelog](https://supermemory.ai/changelog) · [API](https://supermemory.ai/changelog/api)

APIMay 8, 2026

## Usage-based API billing[#](https://supermemory.ai/changelog/usage-based-api-billing)

API billing now follows metered usage instead of relying only on fixed quotas.

### Improvements

* The file upload endpoint now accepts customId and entityContext, matching the memory add endpoint.
* Usage analytics now report token usage per API key for tracking against plan limits.

### Fixes

* Fixed an issue where document metadata updates didn't appear in search results.
* Fixed an issue where chat in the web app used the default model instead of the selected one.

## Start building with supermemory.

Memory and continual learning for any model, any harness. Available through our API, plugins, and MCP.

[Build with supermemory ](https://console.supermemory.ai/)