Anthropic Just Dropped Claude Opus 4.8.

Here Is Everything That Changed

Anthropic released Claude Opus 4.8 today, and it outperforms its predecessor across most major benchmarks while beating OpenAI’s GPT-5.5 and Google’s Gemini 3.1 Pro in several key categories.

The model still lags Mythos, Anthropic’s most advanced model, but Anthropic says Mythos-class models are expected in the coming weeks.

The release cadence is worth n…