Mathematics · Allen Institute for AI

Molmo 8B on AIME 2025: score, rank and what it means

Molmo 8B scores 35.5 on AIME 2025, placing it #564 of 600 models in the index. The benchmark average is 63.6 and the leader is Claude Opus 4.5 Pro at 91.4.

Score
35.5
0–100 scale
Rank
#564
of 600
Percentile
6th
within the index
Benchmark avg
63.6
all models
Leader
91.4
Claude Opus 4.5 Pro
Gap to leader
55.9
points

Score distribution

The chart shows the top 10 models on AIME 2025, with Molmo 8B highlighted. Longer bars mean higher scores.

Claude Opus 4.5 Pro 91.4
GPT-5.2 Pro 91.0
GPT-5.1 Pro 90.6
GPT-5.2 90.6
o4 Reasoning 90.3
o4 Pro 89.9
Claude Opus 4.5 89.8
Gemini 3 Pro Max 89.6
Claude Opus 4.5 Max 89.3
Claude Opus 4.5 Reasoning 88.9

Top 10 leaderboard

#ModelProviderContextInput / 1MAvg score
1 Claude Opus 4.5 Pro Anthropic 200000 $20.98 89.1
2 GPT-5.2 Pro OpenAI 2000000 $21.32 89.6
3 GPT-5.1 Pro OpenAI 200000 $19.77 87.8
4 GPT-5.2 OpenAI 2000000 $19.71 88.0
5 o4 Reasoning OpenAI 1000000 $19.69 87.5
6 o4 Pro OpenAI 1000000 $19.37 87.3
7 Claude Opus 4.5 Anthropic 400000 $19.42 87.7
8 Gemini 3 Pro Max Google DeepMind 2000000 $20.57 87.9
9 Claude Opus 4.5 Max Anthropic 1000000 $20.90 87.8
10 Claude Opus 4.5 Reasoning Anthropic 2000000 $20.91 88.2

What this score means

On AIME 2025, Molmo 8B sits at #564 of 600. The leader, Claude Opus 4.5 Pro, scores 91.4, so the gap to the top is 55.9 points. The median model in this index scores 67.6, which puts Molmo 8B below the midpoint.

Allen Institute for AI models average 50.2 on this benchmark. Molmo 8B is 14.8 points below that provider line, so it is a weaker result than the average Allen Institute for AI model.

Among small open-weight models, the average is 41.6. Molmo 8B is 6.1 points below that group. This is the more useful comparison if you are shortlisting within the same tier rather than across the whole index.

Read a 35.5 as a relative signal, not an absolute guarantee. Benchmark scores depend on prompt format, evaluation harness and contamination controls. Use this page to narrow the shortlist, then test the model on your own data.

Price context

At $0.44 per million input tokens, Molmo 8B is below the median input price of $4.00 across the 600 models scored on AIME 2025. The models immediately around it in the ranking are shown below so you can compare score and price together.

ModelProviderContextInput / 1MAvg score
Llama 3 DeepInfra 1.5B DeepInfra 32768 $0.48 48.8
Hunyuan-Large 1.5B Tencent 8192 $0.54 50.5
StableLM 2 8B Stability AI 32768 $0.38 47.0
Llama 3.1 1.5B Meta AI 4096 $0.53 50.7
Molmo 8B Allen Institute for AI 32768 $0.44 49.9
Llama 3 Modal 1.5B Modal 4096 $0.42 49.7
Llama 3 Baseten 1.5B Baseten 4096 $0.42 48.2

Other benchmarks for Molmo 8B

BenchmarkScoreRankPercentileRelative
MMLU-Pro 55.7 569 5th
GPQA Diamond 47.9 540 10th
SWE-bench Verified 33.6 567 6th
HumanEval 54.0 549 9th
MATH-500 49.2 560 7th
LiveCodeBench 35.6 568 5th
IFEval 60.2 572 5th
TruthfulQA 58.2 545 9th
HellaSwag 69.1 545 9th
MMMU 50.4 549 9th
Arena Elo 1186.2 568 5th

FAQ

What score does Molmo 8B get on AIME 2025?

Molmo 8B scores 35.5 on AIME 2025 in this index. The benchmark average is 63.6 and the top score is 91.4.

How does Molmo 8B rank on AIME 2025?

It ranks #564 of 600 models, in the 6th percentile. The leader is Claude Opus 4.5 Pro at 91.4.

Is Molmo 8B good at AIME 2025?

It is below the median for this benchmark, so test it carefully before relying on it for this capability. The result should be read alongside its price and context window.

How is the AIME 2025 score calculated?

AIME 2025 is a mathematics benchmark. Scores in this index are modelled estimates on a 0–100 scale (or Elo for Arena), derived from capability tier and benchmark difficulty. They are not official leaderboard results.

What does Molmo 8B cost?

Molmo 8B costs $0.44 per million input tokens and $2.29 per million output tokens.

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