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Map / Core AI / Foundation Models / Claude / Opus

Claude Opus

by Anthropic · part of Claude · Text

Anthropic's largest model line, for the hardest reasoning, long-running agentic coding and knowledge work.

Latest version

Opus 5.522 Sep 2026 · 36 days ago

Versions

9since Claude 3 Opus in March 2024

Typical gap

65 daysmedian between versions, last 12 months

All versions

VersionReleasedAfter previousStatusSource
Claude Opus 5.522 Sep 202660 daysLatestanthropic.com
Claude Opus 524 Jul 202657 daysanthropic.com
Claude Opus 4.828 May 202642 daysanthropic.com
Claude Opus 4.716 Apr 202670 daysanthropic.com
Claude Opus 4.65 Feb 202673 daysanthropic.com
Claude Opus 4.524 Nov 2025111 daysanthropic.com
Claude Opus 4.15 Aug 202575 daysRetiredanthropic.com
Claude Opus 422 May 2025444 daysRetiredanthropic.com
Claude 3 OpusClaude Opus 34 Mar 2024FirstRetiredanthropic.com

Dates from Anthropic's own announcements; each row links to its source.

The Claude family

2023202420252026TodayOpusClaude 3 Opus (Claude Opus 3), 4 Mar 20243Claude Opus 4, 22 May 20254Claude Opus 4.1, 5 Aug 20254.1Claude Opus 4.5, 24 Nov 20254.5Claude Opus 4.6, 5 Feb 20264.6Claude Opus 4.7, 16 Apr 20264.7Claude Opus 4.8, 28 May 2026Claude Opus 5, 24 Jul 20265Claude Opus 5.5, 22 Sep 20265.5SonnetClaude 3 Sonnet (Claude Sonnet 3), 4 Mar 20243Claude 3.5 Sonnet (Claude Sonnet 3.5), 20 Jun 20243.5Claude 3.7 Sonnet (Claude Sonnet 3.7), 24 Feb 20253.7Claude Sonnet 4, 22 May 20254Claude Sonnet 4.5, 29 Sep 20254.5Claude Sonnet 4.6, 17 Feb 20264.6Claude Sonnet 5, 30 Jun 20265Claude Sonnet 5.5, 28 Sep 20265.5HaikuClaude 3 Haiku (Claude Haiku 3), 13 Mar 20243Claude 3.5 Haiku (Claude Haiku 3.5), 4 Nov 20243.5Claude Haiku 4.5, 15 Oct 20254.5Claude Haiku 5.5, 7 Oct 20265.5FableClaude Fable 5, 9 Jun 20265Claude Fable 5.1, 1 Sep 20265.1LegacyClaude 1, 14 Mar 20231Claude 2, 11 Jul 20232Claude 2.1, 21 Nov 20232.1

VersionPreviewLatest version

Questions

What is the latest version of Claude Opus?

Claude Opus 5.5, released on 22 Sep 2026.

When was Claude Opus 5 released?

Claude Opus 5 came out on 24 Jul 2026.

When was Claude Opus 4.8 released?

Claude Opus 4.8 came out on 28 May 2026.

When was Claude Opus 4.7 released?

Claude Opus 4.7 came out on 16 Apr 2026.

How often is there a new Claude Opus?

Over the last 12 months a new version came about every 65 days (the median gap). 9 versions have come out since Claude 3 Opus in March 2024.