Claude Opus 5 Sets New Record in Prompt Injection Resistance

Anthropic's Claude Opus 5 achieves near-perfect scores on the Gray Swan IPI benchmark, setting a new record for resistance against indirect prompt injection attacks.

2026-07-25 ~ 2026-07-25 · 2 related posts

• Claude Opus 5 tops a prompt-injection robustness chart and drops attacks near zero — EricBuess · 2026-07-25
• Anthropic says Opus 5 is its hardest model to trick with prompt injection — cedric_chee · 2026-07-25