{"id":"clm_E6D59A90B884","entity":"claude","predicate":"default_model","value":"Claude Sonnet 4","value_json":{"note":"free users; end = Sonnet 4.5 launch (no page found that names Sonnet 4.5 the app default, so Sep 2025-Feb 2026 is a gap)","check":{"by":"research, quote read on the page","on":"2026-11-04","url":"https://www.anthropic.com/news/claude-4","quote":"Pro, Max, Team, and Enterprise Claude plans include both models and extended thinking, with Sonnet 4 also available to free users.","outcome":"checked","dated_by":"page"},"ended":{"on":"2025-09-29","url":"https://support.claude.com/en/articles/12138966-release-notes","quote":"September 29, 2025 Claude Sonnet 4.5 launch We released our newest model, Sonnet 4.5."},"value_as":"Claude Sonnet 4"},"valid_from":"2025-05-22","valid_to":"2025-09-29","published":"2025-05-22","recorded":"2026-11-04","confidence":0.95,"status":"superseded","assertable":true,"superseded_by":"clm_50F23B443136","supersedes":["clm_328D98B8AB9E"],"first_seen_at":"2026-11-04T02:40:06.661518+00:00","updated_at":"2026-11-04T02:40:23.583789+00:00","sources":[{"url":"https://www.anthropic.com/news/claude-4","tier":"primary","publisher":"Anthropic","published_at":"2025-05-22T00:00:00+00:00"},{"url":"https://support.claude.com/en/articles/12138966-release-notes","tier":"primary","publisher":"Anthropic (news)","published_at":null}],"evidence":{"by":"page-read","on":"2026-11-04","quote":"Pro, Max, Team, and Enterprise Claude plans include both models and extended thinking, with Sonnet 4 also available to free users.","url":"https://www.anthropic.com/news/claude-4"},"legend":{"dates":"valid_from: when the claim took effect (a period figure: the day its period closed). published: the earliest day a source on the record published it (a filing's filing date, a post's date; null when no source carries one). recorded: the day AsOf first held it. A figure can take effect weeks before it is published.","why_not":{},"checked_by":{"page-read":"its source page states the value and the date"}}}