AsOf

product · fact

Claude Opus 5.5 context window

As of November 4, 2026, Claude Opus 5.5's context window on the AsOf record is 1 M tokens, dated September 22, 2026, from a primary source (platform.claude.com). The record holds 1 claim on Claude Opus 5.5's context window, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

current context window
1 M tokens2026-09-22 · 1 source

Every dated value

1 claims · oldest first · superseded claims stay visible
valuevalid fromstatus
1M tokens1 M tokens
to present · conf 0.95 · 1 src for context window 1M tokens
2026-09-22valid

Questions this record answers

What is Claude Opus 5.5's current context window?
1 M tokens, dated September 22, 2026, from a primary source (platform.claude.com). The record asserts this claim as of November 4, 2026 (status valid, confidence 0.95).

Answered from the rows above only, as of November 4, 2026. The record has no opinions.

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