Fable 5 restored globally July 1 after 19 days under US export controls. Anthropic deployed a new cybersecurity classifier ...

Anthropic's new Claude Fable 5 is the same base model as Mythos but with guardrails attached ...

Anthropic has announced Claude Sonnet 5, a Sonnet-class model designed for agentic AI workflows. It is built to plan tasks, ...

On benchmarks, Opus 4.8 is a step up rather than a leap. It scores 88.6% on SWE-bench Verified (vs. 87.6% for Opus 4.7), 69.2% on the harder SWE-bench Pro (vs. 64.3%), and 74.6% on Terminal-Bench 2.1 ...

Microsoft has reportedly restricted the use of Anthropic's first widely available Mythos-class AI model, Claude Fable 5. But the reason behind this may not be what you think.

A developer reverse-engineering Anthropic's Claude Code binary discovered on June 30, 2026, that the tool had been silently encoding hidden signals into its AI system prompts for at least three months ...

The release includes an embedded MCP server that exposes Spring project analytics to AI coding assistants, along with first-class support for Spring AI and automated property refactoring.

Meet Claude Fable 5, Anthropic’s version of Claude Mythos for everyday users.

ESP32s are surprisingly good AI lie detectors.