Claude reportedly designs quantum circuits beating published designs; a model reportedly resolves NIST curve seed mystery

Anthropic research reports Claude designed quantum circuits for eight primitives with up to 17x gate reduction over published designs. Separately, a model reportedly traced NSA-supplied NIST P-curve seeds to 1990s Unix timestamps from lrand48, rather than a backdoor. A user reports Claude Opus 5.5 re-derived a published one-loop quantum gravity calculation in about 10 hours and caught errors, but the final result did not change.