ZhiKe AI

May 29, 2026 · Artificial Intelligence

Claude Opus 4.8 Hits Two 0% Honesty Scores in Just 41 Days

Anthropic released Claude Opus 4.8 only 41 days after Opus 4.7, delivering unprecedented 0 % lie‑rate and 0 % lazy‑answer rate, improving code‑defect silence by four‑fold, boosting SWE‑bench Pro to 69.2 % and GDPval‑AA to 1890 Elo, while adding Dynamic Workflows, Effort Control, a richer Messages API and a fast‑mode that runs 2.5× faster for a third of the cost.