Surprise upset: GPT-5.5 beats Claude Fable 5 on brutal new Agents’ Last Exam benchmark

The victory of GPT-5.5 aligns with recent third-party analysis suggesting that OpenAI's models are currently superior at ...
The Next Web

Fable 5 was beating GPT 5.5 on every major benchmark. Then the US government pulled it offline.

Anthropic's Fable 5 led every major AI benchmark over OpenAI's GPT 5.5 before a US export control directive forced it offline three days after launch.

A Complete Beginner’s Guide to Setting Up and Using ChatGPT 5.5

Master ChatGPT 5.5 with this comprehensive beginner guide. Discover how to use the Codex app to build spreadsheets, ...

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

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

Anthropic Apologizes for Claude Fable 5 Secret Censorship—But the Fix Has a Catch

One day after the AI community erupted over invisible performance sabotage on Claude Fable 5, Anthropic has reversed course.
ExtremeTech

Anthropic's Claude Fable 5 Is the Dr. Jekyll to Mythos' Mr. Hyde

Fable 5 uses strict rules to block responses to sensitive topics such as cybersecurity and biological threats.
PRIMETIMER

Hacks season 5 episode 10 (finale) ending explained: Why does Deborah Vance abandon her assisted suicide plan?

Discover the epic ending of Hacks season 5 episode 10. Learn why Deborah Vance changes her mind about her tragic plan in Paris, how Ava handles the truth, and how the acclaimed comedy series wraps up ...
Infosecurity Magazine

Infosecurity Europe: Mythos Outperforms GPT5.5 on Google Chrome Vulnerability Exploits, Says New Benchmark

A Bugcrowd researcher has unveiled ExploitBench, an independent benchmark of AI models for vulnerability exploitation ...
Every

Vibe Check: Fable 5 Is the Best Coding Model in the World

Fable 5 is generally available across Claude.ai, Claude Code, and the desktop app at $10 per million input tokens and $50 per ...