MathArena Apex: Results as Published

MathArena Apex is a small set of final-answer competition mathematics problems that frontier models could not solve when it was built. The launch set (18 August 2025) has 12 problems filtered from nearly 100 competitions, mostly from 2025: six from final-answer competitions and six converted from proof-based ones such as the IMO and team selection tests. A candidate problem was dropped if any of four frontier-model attempts answered it. The score is final-answer accuracy averaged over problems and repeated attempts, and the maintainers add problems over time.

Every number here is read from the same catalog file as the benchmark table, data version 2026103001, and is the number the table shows for that model and test. Where one page printed a model under several setups, each value is listed. The catalog is public in armanobosyan/sugra-llm-benchmarks; a wrong number can be reported from the table, with Report an error under the value, or as an issue in that repository.