Claude Opus 5.5 High has been used to build 'Quick Study,' a browser-based artifact that takes an uploaded photograph and repaints it with simulated brushstrokes on an HTML canvas in just a few seconds.
On October 23, OpenAI published a blog post announcing that it would implement stricter security controls over the training and evaluation environments for its most advanced 'frontier models.' The blog post explicitly states that models must not have direct access to the live internet during training.