Anthropic’s Claude Opus 5 tops third-party AI rankings at a lower reported task cost than Fable 5, sharpening price-performance pressure in frontier models.

Anthropic has unveiled Claude Fable 5 with added safeguards and API access, signaling a push toward broader developer use despite sparse public details.

BBC reports Anthropic released Claude Fable 5 publicly with safeguards after earlier concerns about Mythos capabilities.