Building an internal agent: Context window compaction

· · Dec. 27, 2025, 12:40 a.m.
Summary
This blog post discusses the challenges and solutions related to context window compaction in AI models, particularly ChatGPT 4.1. It details the necessity for efficient handling of long-running workflows and large inputs to prevent context window exhaustion. The author shares their iterative approach to implementing a more robust system for managing context, including newly added tools and message structures to enhance functionality. Overall, the improvements seem to work effectively for internal agent tasks.