Anthropic added a line to its own change log that was not there before, reading "We've increased rate limits on the 1M token context window for Claude Sonnet 4 on the Claude API.".

AnthropicCHANGELOGADDEDMON AUG 31, 21:25

The line, as the page carries it

+We've increased rate limits on the 1M token context window for Claude Sonnet 4 on the Claude API.

The record

DOCUMENThttps://platform.claude.com/docs/en/release-notes/overview
SOURCEanthropic-release-notes
ROWWe've increased rate limits on the 1M token context window for Claude Sonnet 4 on the Claude API.
OPERATIONadded
BEFORENothing was recorded because the row did not exist.
AFTERWe've increased rate limits on the 1M token context window for Claude Sonnet 4 on the Claude API.
READ AT2026-08-31T21:25:21.887Z
SIGNALSmodelId, limit

What went out

    When a lab changes a document

    The engine refetches every registered document on a schedule and files the line that moved. Model cards, system cards, pricing pages, API changelogs and deprecation notices all change without an announcement. Leave an address and Context Window writes when one does.