# AiTokenUsageEvent
## Properties
**provider** | [**models::AiProvider**](AIProvider.md) | |
**model** | **String** | |
**session_id** | Option<**String**> | | [optional]
**input_tokens** | Option<**i32**> | | [optional]
**cache_read_tokens** | Option<**i32**> | | [optional]
**cache_write_tokens** | Option<**i32**> | | [optional]
**output_tokens** | Option<**i32**> | | [optional]
**reported_cost_nano_usd** | Option<**i32**> | only set by providers that bill back an exact figure | [optional]
**requests** | Option<**i32**> | | [optional]
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