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

Anthropic's latest flagship AI model Claude Opus 4.8 arrives with sharper reasoning, tighter alignment, and a price tag that hasn't budged.

Latest model is much better at admitting uncertainty

Here's how you can put Anthropic's claims to the test.