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How Compaction Works in Pi
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Overview
Compaction in Pi occurs during long coding sessions to manage memory and context. Large language models (LLMs) have limited context windows due to the constraints of their transformer architecture, affecting the amount of input they can process.
Summary from earendil.com.
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How Compaction Works in Pi
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Hacker News · earendil.com
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Based on 5 sampled comments from this thread. Analyzed 2026-08-14.
- Praise: Custom extensions in Pi allow users to dictate what gets summarized, empowering developers to tailor the conversation history management to their needs.
- Praise: OMP's shift to using images for context compaction is revolutionary, cutting down on traditional costs while still maintaining context.
- Praise: Some commenters are excited about the potential of subagents to manage context better, which could enhance the overall efficiency of interactions.
- Concern: Many users express dissatisfaction with existing compaction solutions, feeling they lack control over what gets summarized, leading to frustrating conversations.
- Concern: There's skepticism about whether the new image-based compaction will work well with models lacking image processing capabilities, raising concerns about accessibility.
- Concern: Commenters worry that the chain of summaries might still overflow context windows, suggesting that current methods may not be robust enough for extensive dialogues.