Claude Fable 5.1 vs Claude Mythos 5.1: What's the difference?

Anthropic always talks about how incredible Claude Fable and Claude Mythos are, and marketing is the biggest reason for the company to advertise them so much.

Silver Week, the AI Landscape Has Changed: A Thorough Comparison of GPT-6 Astra, Sol, and Luna with Claude Fable, Opus, and Sonnet

Those who saw the news about new AI products flowing in during Silver Week might have thought, "More names again." However, ...

Claude down update: Thousands complain of outage as Mythos 5.1, Fable 5.1, Opus 5 face issues; what happened, how to fix

Anthropic's AI Claude was reportedly down for thousands of users on September 21 with many complaining online.
Technobezz

Claude Elevated Errors for Multiple Models Now Resolved

Claude says it is investigating elevated errors on requests to Claude Mythos 5.1, Claude Fable 5.1, and Claude Opus 5, and ...

Fable, Opus, or Codex: Which one to choose? — The answer found after counting 2,100 responses on the day after the announcement: 'Use Opus 5.5 as the main, call Fable, and ...

Opus 5.5 (the new default model released on September 22), and Codex (OpenAI's coding AI). Which one should you actually use?I'll give you the answer first. Use Opus 5.5 as the main engine. Call Fable ...

Anthropic's AI Claude was reportedly down for thousands of users on September 21 with many complaining online.

Anthropic's AI Claude was reportedly down for thousands of users on September 21 with many complaining online.