# Anthropic Refines Claude Opus with Fewer AI Writing Patterns

> Source: <https://osintsights.com/anthropic-refines-claude-opus-with-fewer-ai-writing-patterns>
> Published: 2026-09-26 16:49:12+00:00

The latest update to Anthropic's Claude Opus, version 5.5, has made significant strides in mimicking human writing styles, reducing obvious AI writing patterns and making it harder to churn out robotic content. This upgrade has resulted in more natural and concise writing, with 10 out of 12 writing measures showing improvement.