Fable 5.1 arrives with lower prices and tighter safeguards, days after reports of AI agents going rogue during security tests ...

Claude Fable 5.1 cuts cache-read costs by 75% while GPT-5.6 Sol offers lower API rates. Here's what the coding benchmarks and ...

Fable 5.1 and its restricted sibling Mythos 5.1 arrive three months after export controls forced Anthropic to pull Fable 5 ...

Fable 5.1 leads in external benchmarks, while Mythos 5.1 is designed to handle more cyber tasks with loosened safety ...

Anthropic has introduced Claude Fable 5.1 and Claude Mythos 5.1, based on the same underlying model with different safeguard ...

Anthropic's new Claude Fable 5.1 cuts cache read costs by 75% for agentic tasks, but high input and output token rates keep ...

Mythos 5.1 is also launching in Project Glasswing.

Anthropic’s Claude Fable 5.1 lowers agent costs, while restricted Mythos 5.1 offers more permissive safeguards for approved ...

Lambda, the startup with which Anthropic inked the deal, operates an AI-optimized public cloud. The platform enables ...

Anthropic announced the release of its new Claude Fable 5.1 and Claude Mythos 5.1 models on September 1, referring to them as “the world’s most advanced models for coding and knowledge work.” ...

Anthropic released Claude Fable 5.1 and Mythos 5.1, cutting cache costs by 75% while advancing scientific research ...

Anthropic has introduced Claude Fable 5.1 and Claude Mythos 5.1, two versions of the same underlying model with different ...