Model comparison
OLMo 2 Furious 13B vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
Allen Institute for AI (Ai2)
StepFunSummary
- The widest gap is in reasoning, where Step 5 Preview leads 40.0 to 15.5.
- OLMo 2 Furious 13B has downloadable open weights; the other is API-only.
Side by side
| OLMo 2 Furious 13B | Step 5 Preview | |
|---|---|---|
| Provider | Allen Institute for AI (Ai2) | StepFun |
| Noometry Index | 29.7 | 47.9 |
| Released | 2024-12-31 | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 12 | 18 |
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Category by category
Coding Step 5 Preview leads
OLMo 2 Furious 13B: 28.6 (#313), Step 5 Preview: 51.8 (#36)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
| LiveBench Coding | 10.4% | — |
| LMArena Coding | — | 1480 |
Reasoning Step 5 Preview leads
OLMo 2 Furious 13B: 15.5 (#314), Step 5 Preview: 40.0 (#57)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LiveBench Reasoning | 16.3% | — |
| LMArena Hard Prompts | — | 1465 |
| LiveBench Data Analysis | 20.6% | — |
| LiveBench | 22.1% | — |
Math Step 5 Preview leads
OLMo 2 Furious 13B: 23.1 (#273), Step 5 Preview: 46.1 (#72)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| ProofBench | — | 42% |
| Omni-MATH | 15.6% | — |
| LiveBench Math | 13.6% | — |
| LMArena Math | — | 1470 |
Knowledge Step 5 Preview leads
OLMo 2 Furious 13B: 18.3 (#283), Step 5 Preview: 41.2 (#112)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| MMLU-Pro | 31% | — |
| GPQA (HELM) | 31.6% | — |
| LMArena Expert | — | 1470 |
Multimodal Not comparable
OLMo 2 Furious 13B: —, Step 5 Preview: 41.0 (#41)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Not comparable
OLMo 2 Furious 13B: —, Step 5 Preview: 53.8 (#54)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LMArena Non-English | — | 1432 |
| LMArena Chinese | — | 1519 |
| LMArena Russian | — | 1436 |
| LMArena Spanish | — | 1439 |
Instruction Following Step 5 Preview leads
OLMo 2 Furious 13B: 60.9 (#248), Step 5 Preview: 76.0 (#50)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LiveBench Instruction Following | 60.6% | — |
| IFEval | 73% | — |
| LMArena Instruction Following | — | 1444 |
Long Context Not comparable
OLMo 2 Furious 13B: —, Step 5 Preview: 44.5 (#64)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | — | 1455 |
Writing & Preference Step 5 Preview leads
OLMo 2 Furious 13B: 42.9 (#230), Step 5 Preview: 62.8 (#71)
| Benchmark | OLMo 2 Furious 13B | Step 5 Preview |
|---|---|---|
| LMArena Text | — | 1442 |
| LMArena Creative Writing | — | 1410 |
| WildBench | 68.9% | — |
| LMArena Multi-Turn | — | 1447 |
| LiveBench Language | 11.2% | — |
Frequently asked questions
Is OLMo 2 Furious 13B better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.7 on the Noometry Index.
Is OLMo 2 Furious 13B or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 28.6 in the Noometry coding category.
How many benchmarks do OLMo 2 Furious 13B and Step 5 Preview share?
0 benchmarks have published results for both models. OLMo 2 Furious 13B has 12 scored results on Noometry and Step 5 Preview has 18.