# TruncationObject
## Properties
**r#type** | **String** | The truncation strategy to use for the thread. The default is `auto`. If set to `last_messages`, the thread will be truncated to the n most recent messages in the thread. When set to `auto`, messages in the middle of the thread will be dropped to fit the context length of the model, `max_prompt_tokens`. |
**last_messages** | Option<**i32**> | The number of most recent messages from the thread when constructing the context for the run. | [optional]
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