Claude 2.1
200K context and a reputation as the most refusal-happy Claude ever shipped — the peak of the over-cautious era. Split from Claude 2 per the version rule.
Sources
Official
tk — to collect
Writing & commentary
tk — to collect
Tweets
tk — fleet pass pending; mirror to archive
Official record
- Released Nov 2023: 200K context, reduced-hallucination claims, tool use beta.
- Widely memed for declining benign requests; the caution reference point every later Claude was measured against.
- tk — fill from primary sources
History
tk — context of the world at release; events and entanglements
Impressions
tk — day-of and longitudinal vibes to collect