Public release date: Fable 5 was made publicly available on June 9, 2026, marking Anthropic's first open release of a ...

Anthropic said the broad release is possible because of new safeguards that block responses in specific high-risk areas.

Queries about dangerous topics such as cybersecurity or bioweapons will be steered to an older Opus model.

Back in April, Anthropic unveiled its Claude Mythos AI model that it said was too powerful to publicly release.

On Thursday, Anthropic launched Claude Opus 4.8, the latest and most advanced version of its flagship AI model. It’s available everywhere at the same price as its predecessor, Opus 4.7 ($5 per million ...