Anthropic · model releaseClaude Opus 5

validasserted

Valid from: 2026-07-24
Valid until: still holds
Published: 2026-07-24
Recorded by AsOf: 2026-10-29
Checked: 2026-10-31 · its source page states the value and the date
Confidence: 0.70

Sources

“Claude Opus 5 is available today. It’s a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.”— what the page says, read 2026-10-31

Claude Platform release notes, July 24, 2026primary · platform.claude.com · 2026-07-24
Introducing Claude Opus 5primary · anthropic.com · 2026-07-24

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