Anthropic · announcementIntroducing Claude 2.1

valid_from

2023-11-21

valid_to

null (still holds)

confidence

0.50

superseded_by

null

first seen

2026-10-27

last updated

2026-10-28

Sources

• Introducing Claude 2.1primary · anthropic.com

/claim/clm_A2BD82F8861B.md/v1/claims/clm_A2BD82F8861Btimelinesubmit a correction