Anthropic Releases Opus 5 with Capabilities Close to Fable 5's The tech industry has been abuzz with news about OpenAI's security incident, but a more significant development went largely unnoticed: Anthropic's latest release of Claude Opus 5.
This new model is being touted as a rival to Fable 5, the public facing Mythos class model that drew the ire of the US government. Anthropic claims that Opus 5 comes close to Fable 5's capabilities in many domains.
However, it's unclear how close is close enough, given that Fable 5 was taken offline for a few weeks due to concerns over its potential use by malicious actors.