Model comparison
GPT-4.1 mini vs Olmo 2 0325 32b Instruct
GPT-4.1 mini and Olmo 2 0325 32b Instruct score almost the same on the Noometry Index (33.6 vs 32.7), so choose on price, context window or the category you care about most.
Last verified . 16 shared benchmarks.
Allen Institute for AI (Ai2)Summary
- They share 16 benchmarks with published results for both. GPT-4.1 mini scores higher in 4 categories and Olmo 2 0325 32b Instruct in 4 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-4.1 mini leads 34.7 to 19.5.
- The biggest single-benchmark swing is MMLU-Pro: 78.3% for GPT-4.1 mini and 41.4% for Olmo 2 0325 32b Instruct.
- Olmo 2 0325 32b Instruct has downloadable open weights; the other is API-only.
Side by side
| GPT-4.1 mini | Olmo 2 0325 32b Instruct | |
|---|---|---|
| Provider | OpenAI | Allen Institute for AI (Ai2) |
| Noometry Index | 33.6 | 32.7 |
| Released | 2025-04-14 | — |
| Weights | Proprietary | Open |
| Context window | 1.05M | — |
| Max output | 33K | — |
| Input $ / M tokens | $0.40 | — |
| Output $ / M tokens | $1.60 | — |
| Results tracked | 47 | 16 |
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Category by category
Coding Olmo 2 0325 32b Instruct leads
GPT-4.1 mini: 30.6 (#293), Olmo 2 0325 32b Instruct: 35.2 (#227)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Coding | 1367 | 1210 |
| SWE-bench Verified (bash only) | 23.9% | — |
| Aider Polyglot | 32.4% | — |
| SciCode | 40.4% | — |
| WeirdML | 37.6% | — |
| BigCodeBench Instruct | 48.9% | — |
| CadEval | 16% | — |
Agentic & Tool Use Not comparable
GPT-4.1 mini: 33.3 (#55), Olmo 2 0325 32b Instruct: —
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| Berkeley Function Calling Leaderboard | 50.5% | — |
Reasoning Olmo 2 0325 32b Instruct leads
GPT-4.1 mini: 10.8 (#340), Olmo 2 0325 32b Instruct: 23.6 (#175)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Hard Prompts | 1349 | 1208 |
| ARC-AGI-2 | 0% | — |
| Kagi LLM Benchmark | 48.6% | — |
| ARC-AGI-1 | 3.5% | — |
| CritPt | 0% | — |
| Chess Puzzles | 7% | — |
| Mystery Game Puzzles | 7% | — |
| DTBench | 68.8% | — |
| LMCA | 21.1% | — |
| Epoch Capabilities Index | 135.01 | — |
Math Olmo 2 0325 32b Instruct leads
GPT-4.1 mini: 24.1 (#270), Olmo 2 0325 32b Instruct: 26.8 (#255)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| Omni-MATH | 49.1% | 16.1% |
| LMArena Math | 1343 | 1208 |
| FrontierMath (Tiers 1-3) | 6.7% | — |
| OTIS Mock AIME 2024-2025 | 44.7% | — |
| MATH Level 5 | 87.3% | — |
| FrontierMath (Feb 2025 set) | 4.5% | — |
Knowledge GPT-4.1 mini leads
GPT-4.1 mini: 34.7 (#194), Olmo 2 0325 32b Instruct: 19.5 (#279)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| MMLU-Pro | 78.3% | 41.4% |
| GPQA (HELM) | 61.4% | 28.7% |
| GPQA Diamond | 65.8% | — |
| SimpleQA Verified | 12.7% | — |
| LMArena Expert | 1338 | — |
Multimodal Not comparable
GPT-4.1 mini: 35.8 (#82), Olmo 2 0325 32b Instruct: —
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Vision | 1181 | — |
Multilingual GPT-4.1 mini leads
GPT-4.1 mini: 45.7 (#166), Olmo 2 0325 32b Instruct: 34.8 (#248)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Non-English | 1318 | 1160 |
| LMArena Chinese | 1329 | 1192 |
| LMArena Russian | 1324 | 1187 |
| LMArena French | 1358 | — |
| LMArena German | 1351 | — |
| LMArena Japanese | 1290 | — |
| LMArena Korean | 1298 | — |
| LMArena Spanish | 1319 | — |
Instruction Following GPT-4.1 mini leads
GPT-4.1 mini: 73.7 (#118), Olmo 2 0325 32b Instruct: 61.5 (#244)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| IFEval | 90.4% | 78% |
| LMArena Instruction Following | 1333 | 1186 |
Long Context Olmo 2 0325 32b Instruct leads
GPT-4.1 mini: 31.8 (#275), Olmo 2 0325 32b Instruct: 36.2 (#234)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Longer Query | 1344 | 1194 |
| Fiction.LiveBench | 44.4% | — |
Writing & Preference GPT-4.1 mini leads
GPT-4.1 mini: 48.6 (#199), Olmo 2 0325 32b Instruct: 42.1 (#236)
| Benchmark | GPT-4.1 mini | Olmo 2 0325 32b Instruct |
|---|---|---|
| LMArena Text | 1340 | 1218 |
| LMArena Creative Writing | 1300 | 1199 |
| WildBench | 83.8% | 73.4% |
| LMArena Multi-Turn | 1354 | 1221 |
| EQ-Bench Creative Writing | 1147 | — |
Frequently asked questions
Is GPT-4.1 mini better than Olmo 2 0325 32b Instruct?
GPT-4.1 mini and Olmo 2 0325 32b Instruct score almost the same on the Noometry Index (33.6 vs 32.7), so choose on price, context window or the category you care about most.
Is GPT-4.1 mini or Olmo 2 0325 32b Instruct better for coding?
Olmo 2 0325 32b Instruct scores higher on coding benchmarks: 35.2 versus 30.6 in the Noometry coding category.
How many benchmarks do GPT-4.1 mini and Olmo 2 0325 32b Instruct share?
16 benchmarks have published results for both models. GPT-4.1 mini has 47 scored results on Noometry and Olmo 2 0325 32b Instruct has 16.