How Pi Prevents Context Overflow with Smart Compaction

How Compaction Works in Pi

Coding agents like Pi, Claude Code, and Codex hit context window limits as conversations grow. Pi's solution: compaction, which summarizes older turns into a structured brief while keeping recent messages intact. This post explains the mechanics—from the compaction prompt that acts like a shift handoff to the impact on prompt caching—and notes that Pi's extensibility lets users swap in custom compaction logic.