Model comparison
Olmo 2 0325 32b Instruct vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 32.7 on the Noometry Index.
Last verified . 11 shared benchmarks.
Allen Institute for AI (Ai2)
StepFunSummary
- They share 11 benchmarks with published results for both. Olmo 2 0325 32b Instruct scores higher in 0 categories and Step 5 Preview in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Step 5 Preview leads 41.2 to 19.5.
- Olmo 2 0325 32b Instruct has downloadable open weights; the other is API-only.
Side by side
| Olmo 2 0325 32b Instruct | Step 5 Preview | |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | StepFun |
| Noometry Index | 32.7 | 47.9 |
| Released | — | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 16 | 18 |
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Category by category
Coding Step 5 Preview leads
Olmo 2 0325 32b Instruct: 35.2 (#227), Step 5 Preview: 51.8 (#36)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1210 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
Reasoning Step 5 Preview leads
Olmo 2 0325 32b Instruct: 23.6 (#175), Step 5 Preview: 40.0 (#57)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1208 | 1465 |
| CritPt | — | 20.9% |
Math Step 5 Preview leads
Olmo 2 0325 32b Instruct: 26.8 (#255), Step 5 Preview: 46.1 (#72)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Math | 1208 | 1470 |
| ProofBench | — | 42% |
| Omni-MATH | 16.1% | — |
Knowledge Step 5 Preview leads
Olmo 2 0325 32b Instruct: 19.5 (#279), Step 5 Preview: 41.2 (#112)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| MMLU-Pro | 41.4% | — |
| GPQA (HELM) | 28.7% | — |
| LMArena Expert | — | 1470 |
Multimodal Not comparable
Olmo 2 0325 32b Instruct: —, Step 5 Preview: 41.0 (#41)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Step 5 Preview leads
Olmo 2 0325 32b Instruct: 34.8 (#248), Step 5 Preview: 53.8 (#54)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1160 | 1432 |
| LMArena Chinese | 1192 | 1519 |
| LMArena Russian | 1187 | 1436 |
| LMArena Spanish | — | 1439 |
Instruction Following Step 5 Preview leads
Olmo 2 0325 32b Instruct: 61.5 (#244), Step 5 Preview: 76.0 (#50)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1186 | 1444 |
| IFEval | 78% | — |
Long Context Step 5 Preview leads
Olmo 2 0325 32b Instruct: 36.2 (#234), Step 5 Preview: 44.5 (#64)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1194 | 1455 |
Writing & Preference Step 5 Preview leads
Olmo 2 0325 32b Instruct: 42.1 (#236), Step 5 Preview: 62.8 (#71)
| Benchmark | Olmo 2 0325 32b Instruct | Step 5 Preview |
|---|---|---|
| LMArena Text | 1218 | 1442 |
| LMArena Creative Writing | 1199 | 1410 |
| LMArena Multi-Turn | 1221 | 1447 |
| WildBench | 73.4% | — |
Frequently asked questions
Is Olmo 2 0325 32b Instruct better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 32.7 on the Noometry Index.
Is Olmo 2 0325 32b Instruct or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 35.2 in the Noometry coding category.
How many benchmarks do Olmo 2 0325 32b Instruct and Step 5 Preview share?
11 benchmarks have published results for both models. Olmo 2 0325 32b Instruct has 16 scored results on Noometry and Step 5 Preview has 18.