As conversations grow, you'll eventually approach context window limits. This guide explains how context windows work and introduces strategies for managing them effectively. For long-running.

Every Claude Code session has a limited context window (typically 200k tokens). When you exceed a certain usage threshold, the AI's response accuracy tends to decrease.

TL;DR: /context renders a visual snapshot of your current sessions context window, token usage, MCP tool traces, and loaded memory files (CLAUDE.md), so you can trim, control, and.

Understanding the Context

Claude Code now surfaces a live context window breakdown directly in the session interface no terminal command needed. You can see exactly how full your context window is,.

Context tracking A content script reads visible conversation messages from the DOM and estimates token count using a character-based heuristic (~3.5 chars/token), tracking usage against the 200K.

What Is the Context Window? The context window is the amount of text Claude Code can "see" at once. Think of it as working memory. Everything in your current conversation (your messages, Claude's.

You can check your current context usage in Claude Code by running the context command, which shows you a breakdown of how tokens are being spent across the system prompt,.

Key Insights

Context window size varies by Claude 4.5 model tier and deployment. Claude 4.5 models share a common architecture but differ in available context capacity depending on tier and.

Context Compass solves this problem with visual progress bars that show exactly how much conversation space you have left in each Claude chat, right in your sidebar.

When the context window reaches its limit, one of two things happens: earlier content gets summarized or dropped, or Claude stops accepting input until you clear the conversation. Either.