Four frontier models, ten tasks, one government shutdown. We ran Claude Fable 5 through the homelab benchmark harness three hours before Anthropic pulled the plug — and it came in second. Here's the full bakeoff.

I had 3 days with it. That's all anyone got. Claude Fable 5 launched June 9. I immediately threw it...

Four frontier models, ten tasks, one government shutdown. We ran Claude Fable 5 through the homelab benchmark harness three hours before Anthropic pulled the plug — and it came in…

Claude Fable 5 hit 95% SWE-bench Verified before the US government forced a global shutdown 72 hours after launch. Benchmarks, API details, and what to do now.

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.

On Friday afternoon a government order hit Anthropic, and by Saturday morning Fable 5 and Mythos 5...

Fable 5 crushed every benchmark, redefined what AI coding assistants could do, and disappeared before most developers even got to try it. Here's what we lost.