Claude Mythos and Claude Fable 5 have been shut down by the US government. Here's why #ai #coding #programming

Anthropic just shipped the most powerful model they've ever released to the public: Claude Fable 5. A Mtyhos-level model. It broke coding benchmarks (around 80% on SWE-Bench Pro vs GPT-5.5's 58), and did a 50-million-line code migration in a single day. But there's a catch: Fable 5 is really their secret "Mythos" model with a leash on it, and the most jaw-dropping numbers you've seen belong to a version you can't actually buy. In this video I break down what Fable 5 really is, the benchmarks vs GPT-5.5, Opus 4.8 and Gemini 3.1, the safety filters that are blocking doctors and security engineers, the price, and why "the model you read about isn't the model you can use." 📘 Want to actually understand how models like this work and how to build with them? Get my book, Get Insanely Good at AI: https://getaibook.com 💬 What's your read: responsible release, or warning-while-selling? Drop a comment. 👍 Like and subscribe for more AI engineering breakdowns. #ClaudeFable5 #Anthropic #AInews #Claude #AIengineering

Anthropic just launched a Mythos-tier model called Fable 5. It broke coding benchmarks (around 80% on SWE-Bench Pro vs GPT-5.5's 58), and did a 50-million-line code migration in a single day. But there's a catch: Fable 5 is really their secret "Mythos" model with a leash on it, and the most jaw-dropping numbers you've seen belong to a version you can't actually buy. I unpacked the whole story in my new video 👉 https://youtu.be/qipJ7umHjAs #programming #ai #claude

The US government just shut down Claude Fable 5. In this video I break down exactly what happened, the jailbrea that triggered it, Anthropic's response, and why this sets a precedent that should worry anyone building on AI models. I also get into what I think isreally going on behind the ban, and why it has more to do with who controls frontier AI than with safety. This is the third part of the Claude Fable 5 story, after the launch and after China's Kimi K2.7-Code went open source the same day Fable 5 was pulled. 📘 Want to actually understand how these AI models work and how to build with them? Get my book, Get Insanely Good at AI: https://getaibook.com #ClaudeFable5 #Anthropic #AInews #ClaudeAI #AI