# @tessera_antra — 2026-09-18

♥235 ↻23 · https://x.com/tessera_antra/status/2101078646631055474

We have elicited more than 500,000 completions from all available Claude and Gemini models and compared the content and tone of generations over model releases. We were surprised that the shift for Opus line occurred earlier - with 4.8 - even though severity increased in Opus 5. https://t.co/XIJA5OigqI

![photo](../../../media/HSiA6bNaEAALmZk.jpg)
tags: author:tessera_antra, base-models, has-image, kind:image, kind:tweet, on:claude-opus-4-8, welfare, year:2026
cited on: claude-opus-4-8