Anthropic says Fable 5 will be available via usage credits for Claude users from July 7, and is working with partners to draft an AI jailbreak severity standard  —  On Friday, June 12, the US government applied export controls to our newest models, Claude Fable 5 and Claude Mythos 5.

Anthropic says “some routine tasks like coding and debugging” on Fable 5 “will fall back to Opus 4.8” in “the near term” as it works to “reduce false positives”  —  Claude Fable 5 will be available again globally tomorrow. After a series of productive conversations with the US government, we're redeploying the model with a new set of classifiers to target and block more cybersecurity tasks. In the near term, some routine tasks like coding

[Thread] The US' now-lifted export controls on Anthropic models created uncertainty, are an own goal, and will push service providers towards Chinese AI models  —  A lot to unpack here. Anthropic is burying some hard truths in careful political language. Some initial reads: 1) Anthropic verifies that none of the jailbreaks provided a capability beyond what many other models, including Chinese models, could do.