AsOf

Anthropic · releasedClaude Mythos 5

validasserted
Valid from
2026-06-09
Valid until
still holds
Published
2026-06-09
Recorded by AsOf
2026-10-31
Checked
2026-10-31 · its source page states the value and the date
Confidence
0.70

Sources

“June 9, 2026 We’ve launched Claude Fable 5 ( claude-fable-5 ), our most capable model open to all customers, alongside Claude Mythos 5 ( claude-mythos-5 ) for Project Glasswing participants.”— what the page says, read 2026-10-31