Noometry

Model comparison

GPT-4.1 mini vs Molmo 2 8b

Molmo 2 8b is the stronger model overall, scoring 39.1 to 33.6 on the Noometry Index.

Last verified . 5 shared benchmarks.

GPT-4.1 mini OpenAI

33.6

Rank #240 Confirmed

Molmo 2 8b Allen Institute for AI (Ai2)

39.1

Rank #174 Confirmed

Summary

  • They share 5 benchmarks with published results for both. GPT-4.1 mini scores higher in 3 categories and Molmo 2 8b in 2 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Molmo 2 8b leads 25.6 to 10.8.
  • Molmo 2 8b has downloadable open weights; the other is API-only.

Side by side

GPT-4.1 miniMolmo 2 8b
ProviderOpenAIAllen Institute for AI (Ai2)
Noometry Index33.639.1
Released2025-04-14—
WeightsProprietaryOpen
Context window1.05M—
Max output33K—
Input $ / M tokens$0.40—
Output $ / M tokens$1.60—
Results tracked475

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Category by category

Coding Not comparable

GPT-4.1 mini: 30.6 (#293), Molmo 2 8b: —

BenchmarkGPT-4.1 miniMolmo 2 8b
SWE-bench Verified (bash only)23.9%—
Aider Polyglot32.4%—
SciCode40.4%—
WeirdML37.6%—
BigCodeBench Instruct48.9%—
LMArena Coding1367—
CadEval16%—

Agentic & Tool Use Not comparable

GPT-4.1 mini: 33.3 (#55), Molmo 2 8b: —

BenchmarkGPT-4.1 miniMolmo 2 8b
Berkeley Function Calling Leaderboard50.5%—

Reasoning Molmo 2 8b leads

GPT-4.1 mini: 10.8 (#340), Molmo 2 8b: 25.6 (#146)

BenchmarkGPT-4.1 miniMolmo 2 8b
LMArena Hard Prompts13491287
ARC-AGI-20%—
Kagi LLM Benchmark48.6%—
ARC-AGI-13.5%—
CritPt0%—
Chess Puzzles7%—
Mystery Game Puzzles7%—
DTBench68.8%—
LMCA21.1%—
Epoch Capabilities Index135.01—

Math Not comparable

GPT-4.1 mini: 24.1 (#270), Molmo 2 8b: —

BenchmarkGPT-4.1 miniMolmo 2 8b
FrontierMath (Tiers 1-3)6.7%—
OTIS Mock AIME 2024-202544.7%—
Omni-MATH49.1%—
LMArena Math1343—
MATH Level 587.3%—
FrontierMath (Feb 2025 set)4.5%—

Knowledge Not comparable

GPT-4.1 mini: 34.7 (#194), Molmo 2 8b: —

BenchmarkGPT-4.1 miniMolmo 2 8b
GPQA Diamond65.8%—
SimpleQA Verified12.7%—
MMLU-Pro78.3%—
GPQA (HELM)61.4%—
LMArena Expert1338—

Multimodal GPT-4.1 mini leads

GPT-4.1 mini: 35.8 (#82), Molmo 2 8b: 30.2 (#112)

BenchmarkGPT-4.1 miniMolmo 2 8b
LMArena Vision11811081

Multilingual GPT-4.1 mini leads

GPT-4.1 mini: 45.7 (#166), Molmo 2 8b: 42.7 (#190)

BenchmarkGPT-4.1 miniMolmo 2 8b
LMArena Non-English13181276
LMArena Chinese1329—
LMArena French1358—
LMArena German1351—
LMArena Japanese1290—
LMArena Korean1298—
LMArena Russian1324—
LMArena Spanish1319—

Instruction Following GPT-4.1 mini leads

GPT-4.1 mini: 73.7 (#118), Molmo 2 8b: 67.0 (#201)

BenchmarkGPT-4.1 miniMolmo 2 8b
LMArena Instruction Following13331270
IFEval90.4%—

Long Context Not comparable

GPT-4.1 mini: 31.8 (#275), Molmo 2 8b: —

BenchmarkGPT-4.1 miniMolmo 2 8b
Fiction.LiveBench44.4%—
LMArena Longer Query1344—

Writing & Preference Too close to call

GPT-4.1 mini: 48.6 (#199), Molmo 2 8b: 49.4 (#191)

BenchmarkGPT-4.1 miniMolmo 2 8b
LMArena Text13401288
LMArena Creative Writing1300—
EQ-Bench Creative Writing1147—
WildBench83.8%—
LMArena Multi-Turn1354—

Frequently asked questions

Is GPT-4.1 mini better than Molmo 2 8b?

Molmo 2 8b is the stronger model overall, scoring 39.1 to 33.6 on the Noometry Index.

How many benchmarks do GPT-4.1 mini and Molmo 2 8b share?

5 benchmarks have published results for both models. GPT-4.1 mini has 47 scored results on Noometry and Molmo 2 8b has 5.

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