Explore the context window changedcontext-window
Nearest release: v2.1.293, published 9 hours after upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Upstream edited this page at 7 Oct 2026 07:30 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 7 Oct 2026 07:37 UTC.
Upstream edited
Recorded here
Lines+1added
Lines−1removed
From line
1,580
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits19to this page, all time
The whole hunk
from line 1580, old and new numbered
/
from line 1580
15801580
15811581The session walks through a realistic flow with representative token counts:
15821582
1583* **Before you type anything**: CLAUDE.md, auto memory, MCP tool names, and skill descriptions all load into context. [AGENTS.md files](/docs/en/memory#agents-md) can load too, on their own or alongside CLAUDE.md. Your own setup may add more here, like an [output style](/docs/en/output-styles) or text from [`--append-system-prompt`](/docs/en/cli-reference).
1583* **Before you type anything**: CLAUDE.md, auto memory, MCP tool names, and skill descriptions all load into context. [AGENTS.md files](/docs/en/memory#agents-md) can load in place of CLAUDE.md. Your own setup may add more here, like an [output style](/docs/en/output-styles) or text from [`--append-system-prompt`](/docs/en/cli-reference).
15841584* **As Claude works**: each file read adds to context, [path-scoped rules](/docs/en/memory#path-specific-rules) load automatically alongside matching files, and a [PostToolUse hook](/docs/en/hooks-guide) fires after each edit.
15851585* **The follow-up prompt**: a [subagent](/docs/en/sub-agents) handles the research in its own separate context window, so the large file reads stay out of yours. Only the summary and a small metadata trailer come back.
15861586* **At the end of the walkthrough**: you run `/compact`, which replaces the conversation with a structured summary. Most startup content reloads automatically; the table below shows what happens to each mechanism.
No line in this hunk matches that.