AnthropicのFable 5が復活 — しかしセーフティフィルターが無害なコードまでブロック
Anthropicは、ジェイルブレイクをめぐる2週間の禁止措置を経てFable 5への世界的アクセスを復元したが、新たなセーフティ修正により、無害なプログラミング作業まで誤ってブロックされるようになった。
anthropic lifted the suspension on fable 5 following a two-week government investigation into a vulnerability that allowed the model to generate software exploits. the fix involved training a classifier that blocks the specific jailbreak technique in over 99 percent of cases, though users will experience increased refusals on routine coding tasks. the less restricted mythos 5 remains limited to us government-approved partners, while anthropic admits making models impervious to jailbreaks is probably impossible. the company is establishing a 24/7 monitoring team and a hackerone program to handle future vulnerabilities, signaling a shift toward tighter government integration on frontier model safety.