Benchmark Almanac

IMC 2025

Gemini 2.5 Pro Jun 2025 94.5% Not in model cards

Models write proofs for the 10 problems of the 2025 International Mathematics Competition for University Students. Human judges grade each proof.

MathArena graded only three Gemini systems, all above the gold threshold of 56 percent.

Made by IMC (contest) , MathArena (evaluation) Released Aug 2025 Written proofs All tasks public Last model added Jun 2025 Scores refreshed 2 Nov 2026
Level
University Undergraduates and entry-level professionals
Scored
Graded by people Human experts grade or compare the outputs.
Answers
Written proof
2
Entries on its own leaderboard, 1 model we track

Gemini 2.5 Pro leads with 94.5%

Best score per entry from the benchmark's own leaderboard, read on 2 Nov 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.

  1. 1 Gemini 2.5 Pro Jun 2025 94.5%
  2. 2 Gemini IMO Deep Think 93%
#EntryScoreSettingDateSource
1 Gemini 2.5 Pro Jun 2025 94.5% agent Jun 2025 Official leaderboard
2 Gemini IMO Deep Think 93% Official leaderboard

The best score passed 85% in Jun 2025

All the scores we have, one dot each, so a model tested at several settings appears more than once.

On the benchmark’s own leaderboard
0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Gemini 2.5 Pro 0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Gemini 2.5 Pro

No lab model card reports it yet

We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark.

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