Claude API rate limit docs updated with 2026-10-21 version link

This documentation page outlines rate limiting mechanisms, throughput metrics, and usage controls across Claude API services, covering request-per-minute constraints, cached token accounting, and workspace spend ceilings. The recent revision introduces a navigation entry pointing toward migration instructions for the 2026-10-21 interface release, while shortening the cloud permission reference title from its prior AWS platform phrasing. Aside from navigation updates, the textual modifications are purely editorial: informal phrasing was replaced with formal language, prepositions denoting distribution were standardized, and numerical symbols such as '80%' were written out as '80 percent.' In practice, existing thresholds, operational quotas, and financial protections remain identical. Developers will not observe adjustments to their actual numeric throughput caps, batch queue capacities, or error response handling. Workspace administrative controls and prompt caching benefits—where cached tokens continue to be excluded from input token rate counts—function exactly as before. The text alone does not disclose what specific behavioral changes accompany the 2026-10-21 release, nor whether that interface revision alters how headers, quotas, or background processing are handled.