Benchmark Almanac

IMC 2025

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.

Released
August 2025
Kind
Written proofs
Level
University
Scored
Graded by people
Answers
Written proof
Tasks
All public
Strongest model tested
Gemini 2.5 Pro Jun 2025 #96 on the capability index
Last model added
June 2025
Scores refreshed
November 12th, 2026
2
Entries on MathArena’s leaderboard, 1 model we track

Gemini 2.5 Pro leads with 94.5%

Best score per entry from MathArena’s leaderboard, read on November 12th, 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%

Source: MathArena’s leaderboard

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

Gemini 2.5 Pro on the official leaderboard passed 85% in June 2025

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

On MathArena’s 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

Source: MathArena’s leaderboard

No lab model card reports it yet

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.

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