AsOf

product · fact

Claude Mythos 5.1 release date

As of November 4, 2026, the AsOf record says Claude Mythos 5.1 was released on September 1, 2026, from a primary source (platform.claude.com). The record holds 1 claim on Claude Mythos 5.1's release, 1 still open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

current release date
Claude Mythos 5.12026-09-01 · 1 source

Every dated value

1 claims · oldest first · superseded claims stay visible
valuevalid fromstatus
Claude Mythos 5.1
to present · conf 0.95 · 1 src for release date Claude Mythos 5.1
2026-09-01valid

Questions this record answers

When was Claude Mythos 5.1 released?
On September 1, 2026, from a primary source (platform.claude.com) (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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