Anthropic has officially launched Claude Opus 4.8 - a direct challenger to OpenAI’s GPT-5.5 and Google’s Gemini 3.1 Pro

DeepSWE puts GPT-5.5 atop the AI coding leaderboard while raising new questions about Claude Opus, SWE-Bench Pro, and benchmark leakage.

Anthropic releases Claude Opus 4.8 with sharper judgement and fewer uncaught code flaws. Mythos-class models coming in weeks. Series H raises $65B at $965B valuation.

A Mythos-class model is expected in the coming weeks.