{"id":"clm_C6F0F4D4273B","entity":"claude","predicate":"released","value":"API version 2026-10-21","value_json":{"feed":"claude-platform-release-notes","item":"https://platform.claude.com/docs/en/release-notes/overview#2026-10-21","tags":{"v":2,"ai":false,"by":"claude-haiku-5-5","on":"2026-10-31","themes":["developer_platform"],"release_kind":"developer_tool"},"check":{"on":"2026-10-31","url":"https://platform.claude.com/docs/en/release-notes/overview#2026-10-21","pages":1,"quote":"October 21, 2026  We’ve released API version 2026-10-21 . Migrating to API version 2026-10-21 shows how to upgrade.","outcome":"checked"},"evidence":"We’ve released API version 2026-10-21 . Migrating to API version 2026-10-21 shows how to upgrade. · We’ve released new versions of the client SDKs and the ant CLI that send API version 2026-10-21 by default: Python SDK 2.0.0, TypeScript SDK 1.0.0, C# SDK 13.0.0, Go SDK 2.0.0, Java SDK 3.0.0, PHP SDK","extracted_by":"claude-haiku-5-5","primary_source":true},"valid_from":"2026-10-21","valid_to":null,"published":"2026-10-21","recorded":"2026-10-31","confidence":0.7,"status":"valid","assertable":true,"superseded_by":null,"supersedes":[],"first_seen_at":"2026-10-31T02:13:24.022264+00:00","updated_at":"2026-10-31T03:22:07.868345+00:00","sources":[{"url":"https://platform.claude.com/docs/en/release-notes/overview#2026-10-21","tier":"primary","publisher":"Anthropic","published_at":"2026-10-21T00:00:00+00:00"}],"evidence":{"by":"page-read","on":"2026-10-31","quote":"October 21, 2026  We’ve released API version 2026-10-21 . Migrating to API version 2026-10-21 shows how to upgrade.","url":"https://platform.claude.com/docs/en/release-notes/overview#2026-10-21","excerpt":"We’ve released API version 2026-10-21 . Migrating to API version 2026-10-21 shows how to upgrade. · We’ve released new versions of the client SDKs and the ant CLI that send API version 2026-10-21 by default: Python SDK 2.0.0, TypeScript SDK 1.0.0, C# SDK 13.0.0, Go SDK 2.0.0, Java SDK 3.0.0, PHP SDK"},"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"}}}