A challenging mathematical olympiad competition featuring problems that test advanced mathematical reasoning and problem-solving skills at the olympiad level.
BenchLM is tracking BRUMO 2025 in the local dataset, but exact-source verification records for these rows are still being attached. To avoid a blank benchmark page, BenchLM shows the current tracked rows below as a display-only reference table.
These tracked rows are useful for inspection and spot-checking, but until exact-source attachments are completed they should not be treated as fully verified public benchmark rows.
BenchLM mirrors the published tracked score view for BRUMO 2025. GPT-5.4 leads the public snapshot at 97% , followed by GPT-5.2 Pro (97%) and GPT-5.1-Codex-Max (96%). BenchLM does not use these results to rank models overall.
GPT-5.4
OpenAI
gpt-5-4
GPT-5.2 Pro
OpenAI
gpt-5-2-pro
GPT-5.1-Codex-Max
OpenAI
gpt-5-1-codex-max
The published BRUMO 2025 snapshot is tightly clustered at the top: GPT-5.4 sits at 97%, while the third row is only 1.0 points behind. The broader top-10 spread is 1.0 points, so many of the published scores sit in a relatively narrow band.
107 models have been evaluated on BRUMO 2025. The benchmark falls in the Math category. This category carries a 5% weight in BenchLM.ai's overall scoring system. Within that category, BRUMO 2025 contributes 25% of the category score, so strong performance here directly affects a model's overall ranking.
Year
2025
Tasks
Olympiad problems
Format
Mathematical olympiad
Difficulty
Mathematical olympiad level
BRUMO represents the Bulgarian tradition of mathematical excellence, featuring problems that require deep mathematical insight and creative problem-solving approaches.
Version
BRUMO 2025 2025
Refresh cadence
Quarterly
Staleness state
Current
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
A challenging mathematical olympiad competition featuring problems that test advanced mathematical reasoning and problem-solving skills at the olympiad level.
GPT-5.4 currently leads the published BRUMO 2025 snapshot with a tracked score of 97%. BenchLM shows this benchmark for display only and does not use it in overall rankings.
107 AI models are included in BenchLM's mirrored BRUMO 2025 snapshot, based on the public leaderboard captured on April 20, 2026.
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