{"artifact":{"id":"art-claude21-20231121","dedupe_key":"29890bfb42d09489c0e15144d21fdd35f81546370ae7f29a28a5cf343efa3343","canonical_url":"https://www.anthropic.com/news/claude-2-1","evidence_locator":"","artifact_type":"long_context_tool_model_release","title":"Claude 2.1","summary":"Claude 2.1 became available with 200K context, system prompts and beta tool use.","creator_entities":["Anthropic"],"released_at":"2023-11-21T00:00:00.000Z","content_hash":null,"metadata":{"historical_scope":"2023-Q4"},"created_at":"2026-10-08T17:00:00.102Z","updated_at":"2026-10-08T17:00:00.102Z"},"sources":[{"id":"src-claude21-20231121","dedupe_key":"d1a98285dafa0979d7ee1bd654fbcf18088dc207de31fd516fe1c7381fa45122","name":"Introducing Claude 2.1","publisher":"Anthropic","url":"https://www.anthropic.com/news/claude-2-1","evidence_locator":"","source_type":"model_release","primary_or_secondary":"primary","retrieved_at":"2026-10-08T15:42:00.000Z","published_at":"2023-11-21T00:00:00.000Z","author":"Anthropic","metadata":{"language":"en","jurisdiction":"global","time_precision":"day"},"created_at":"2026-10-08T17:00:00.094Z","updated_at":"2026-10-08T17:00:00.094Z"}]}