Change feed / 2025-11-24
Claude Opus 4.5 released with system card and external pre-deployment testing
Release accompanied by a detailed system card including third-party evaluation results — the disclosure pattern Tier 2 requires.
Evidencequoted verbatim from the source
Sources (1)
How to cite thisCC BY 4.0 — reuse freely, attribution required
Plain
ModelRiskIndex. "Claude Opus 4.5 released with system card and external pre-deployment testing." Change feed, 2025-11-24. https://modelriskindex.com/changes/opus-4-5-system-card
BibTeX
@misc{mri-2025-11-24,
title = {Claude Opus 4.5 released with system card and external pre-deployment testing},
author = {{ModelRiskIndex}},
year = {2025},
note = {Change feed, 2025-11-24},
url = {https://modelriskindex.com/changes/opus-4-5-system-card}
}Please cite the dated entry rather than the site root. Every assessment here is a point-in-time judgment bound to evidence retrieved on a specific date — an undated citation asserts something the data does not.
