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math benchmark

USAMO25 Leaderboard

USAMO25 is a benchmark based on six proof-based mathematical problems from the 2025 United States of America Mathematical Olympiad.

Updated Sep 5, 2026

Models3
Model coverage3
MetricScore
EvidenceB

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  • FAQ

USAMO25 Ranking

Higher score ranks better on this benchmark.

3 rows
Columns

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Rank
Model
Score
Percentile
Participants
Evidence
Evaluated
Rank01ModelANClaude Mythos PreviewAnthropicScore97.60%Percentile100.00%Participants3EvidenceCEvaluatedSep 8, 2026
Rank02ModelXAGrok-4 HeavyxAIScore61.90%Percentile50.00%Participants3EvidenceCEvaluatedSep 8, 2026
Rank03ModelXAGrok-4xAIScore37.50%Percentile0.00%Participants3EvidenceCEvaluatedSep 8, 2026

USAMO25 Highlights

The leading models and scores on this benchmark.

USAMO25 Score Distribution

A closer view of the leading scores on this benchmark.

USAMO25

The Top AI Models for USAMO25

The first five results on this benchmark, with official price and output speed added where the model identity can be matched.

What is USAMO25?

What USAMO25 measures and how its scores work.

USAMO25 is a math benchmark consisting of six challenging problems from the 2025 United States of America Mathematical Olympiad.

It measures mathematical problem-solving, formal mathematical reasoning, and proof generation beyond simple numerical computation.

Scores are shown in ratio. This benchmark is not independently verified and has an evidence level of B.

Family
USAMO25
Modality
text
Primary category
math
Score direction
higher
LLMBoard eligible
No
Evaluation key
overall

LLM Stats. Benchmark scores retain their original unit. Overall score eligibility is shown separately.

FAQ

Common questions about USAMO25.

Which model scores highest on USAMO25?

Claude Mythos Preview is currently ranked first with 97.60%.

What are the top three models on USAMO25?

The current leaders are Claude Mythos Preview (97.60%), Grok-4 Heavy (61.90%), and Grok-4 (37.50%).

Which USAMO25 model has the lowest official input price?

No matched official input price is currently available.

Which models are fastest among USAMO25 results?

The fastest matched records are Grok-4 (100.00 tok/s via xAI).

Does the highest score result prove overall model quality?

No. This benchmark measures one defined capability or task. The overall LLMBoard score uses a separate aggregation across eligible benchmark evidence.

What does USAMO25 measure?

It measures mathematical problem-solving, formal mathematical reasoning, and proof generation beyond simple numerical computation.

Is a higher score better?

Yes. Higher values rank better for this benchmark.

How many models are compared?

3 model results are currently shown.

Does this benchmark affect the overall score?

No. This benchmark is shown for reference but does not contribute to the overall score.

Rank #1Claude Mythos Preview97.60%
Rank #2Grok-4 Heavy61.90%
Rank #3Grok-437.50%

Ranking basisThis usamo25 AI model leaderboard uses descending score in the benchmark original unit. The leaderboard ranking keeps matched price and speed data separate from benchmark evidence.

  1. 01
    AN
    Claude Mythos PreviewAnthropic
    Score
    97.60%

    Strengths

    • Ranks #1 of 3 compared models
    • 100th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures USAMO25, not total model capability
  2. 02
    XA
    Grok-4 HeavyxAI
    Score
    61.90%

    Strengths

    • Ranks #2 of 3 compared models
    • 50th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures USAMO25, not total model capability
  3. 03
    XA
    xAI
    Score
    37.50%
    Speed
    Up to 100.00 tok/s via xAI

    Strengths

    • Ranks #3 of 3 compared models
    • 0th percentile on this benchmark
    • C evidence result

    Considerations

    • This result measures USAMO25, not total model capability

Selection summary

Best AI Models for USAMO25

Claude Mythos Preview currently leads USAMO25 with 97.60%. It is the top model on this specific benchmark, while the best LLM for the broader task should also be checked against other benchmarks, price, and runtime.

Use this leaderboard with the supporting benchmark results and coverage details above. A leaderboard position summarizes the selected ranking signal; it does not replace workload-specific testing.

Grok-4
Benchmark rank #1Claude Mythos Preview97.60%
Benchmark rank #2Grok-4 Heavy61.90%
Benchmark rank #3Grok-437.50% · Up to 100.00 tok/s via xAI