one idea is obvious: multi-model approach. it partially done today for safety checks. the same can be done for correctness. one model produces result, different

one idea is obvious: multi-model approach. it partially done today for safety checks. the same can be done for correctness. one model produces result, different model only checks the correctness. optionally several results, second model checks correctness and selects the best. this is more expensive, but should give better final output. not sure, this may have been already done.