Benchmark Snapshot

Mythos leads 17 of 18 published comparisons

Anthropic's unreleased Claude Mythos Preview tops nearly every comparable row in its April 7 system card. All figures are reported by Anthropic and have not been independently verified.

17/18 Rows where Mythos leads the best publicly reported competitor

+13.1 Median lead on rows Mythos leads, in benchmark points

Reading guide: each row shows Mythos's lead over the best competitor Anthropic listed for that benchmark. Mythos Preview Best publicly reported competitor No clear lead

Source Note

Source: Anthropic, Claude Mythos Preview System Card, April 7, 2026, Table 6.3.A plus benchmark-specific sections. See also the accompanying technical report on software vulnerabilities and exploits. Mythos numbers were run by Anthropic on Anthropic's own harness; competitor figures are drawn from each vendor's published materials and have not been independently verified. CyberGym is shown here as +16 points on a 0-100 rescaling of Anthropic's published 0.83 vs. 0.67 pass@1 scores.