Verified facts
- Claude Mythos 5 receives natural-language specifications, then an evaluator checks circuit correctness and cost.
- The eight tasks cover chemistry, optimization, simulation and number theory. The authors report improvements over the best published circuits, sometimes by an order of magnitude.
- For modular inversion, the work describes a reversible divsteps variant, tested numerically and with Lean formalization of a decoding formula.
What changes
The scientific interest lies in generation plus verification, not a suddenly available quantum machine.
Practical implication
Distinguish algorithmic discovery from the timeline for industrial applications.
Availability
Public results and paper; no announcement of a commercial quantum computer or general Mythos 5 access.
Limits and uncertainty
These are design improvements and estimated resource reductions, not a demonstration of quantum advantage on production hardware. Author-reported results were not reproduced here.