Anthropic Releases Claude Opus 5 System Card

Anthropic has released the system card for Claude Opus 5. Internal evaluations indicate that the new model outperforms the previous Mythos 5 in several research tasks and shows significantly enhanced cybersecurity capabilities.

2026-07-25 ~ 2026-07-25 · 3 related posts

• Anthropic publishes the Claude Opus 5 system card — tokenbender · 2026-07-25
• Anthropic’s Claude Opus 5 system card shows gains over Mythos 5 on internal evals — tokenbender · 2026-07-25
• Claude Opus 5 System Card Reveals Major Cybersecurity Capabilities — tokenbender · 2026-07-25