Model comparison
o1-mini vs Step 3
Step 3 is the stronger model overall, scoring 40.5 to 34.0 on the Noometry Index.
Last verified . 15 shared benchmarks.
StepFunSummary
- They share 15 benchmarks with published results for both. o1-mini scores higher in 0 categories and Step 3 in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 3 leads 28.4 to 8.8.
- Step 3 has downloadable open weights; the other is API-only.
Side by side
| o1-mini | Step 3 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 34.0 | 40.5 |
| Released | 2024-09-12 | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 39 | 17 |
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Category by category
Coding Step 3 leads
o1-mini: 35.5 (#224), Step 3: 40.1 (#147)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Coding | 1362 | 1367 |
| Aider Polyglot | 32.9% | — |
| WeirdML | 36.3% | — |
| LiveBench Coding | 48% | — |
| HumanEval+ | 89% | — |
| MBPP+ | 78.8% | — |
Agentic & Tool Use Not comparable
o1-mini: 24.6 (#118), Step 3: —
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| Cybench | 10% | — |
Reasoning Step 3 leads
o1-mini: 8.8 (#346), Step 3: 28.4 (#105)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Hard Prompts | 1333 | 1355 |
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 18.1% | — |
| Kagi LLM Benchmark | — | 62.3% |
| ARC-AGI-1 | 14% | — |
| LiveBench Reasoning | 72.3% | — |
| LiveBench Data Analysis | 57.9% | — |
| Epoch Capabilities Index | 135.82 | — |
| LiveBench | 57.8% | — |
Math Step 3 leads
o1-mini: 35.4 (#186), Step 3: 37.6 (#148)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Math | 1358 | 1366 |
| OTIS Mock AIME 2024-2025 | 46.9% | — |
| LiveBench Math | 62% | — |
| MATH Level 5 | 89.2% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Step 3 leads
o1-mini: 34.9 (#192), Step 3: 36.8 (#164)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Expert | 1316 | 1333 |
| GPQA Diamond | 62.4% | — |
| Confabulations | 18.6% | — |
Multimodal Not comparable
o1-mini: —, Step 3: 35.5 (#86)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Vision | — | 1177 |
Multilingual Step 3 leads
o1-mini: 43.6 (#182), Step 3: 46.3 (#159)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Non-English | 1289 | 1327 |
| LMArena Chinese | 1314 | 1397 |
| LMArena German | 1278 | 1371 |
| LMArena Korean | 1223 | 1269 |
| LMArena Russian | 1283 | 1331 |
| LMArena Spanish | 1303 | 1371 |
| LMArena French | 1293 | — |
| LMArena Japanese | 1245 | — |
Instruction Following Step 3 leads
o1-mini: 66.7 (#206), Step 3: 70.4 (#164)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1304 | 1332 |
| LiveBench Instruction Following | 65.4% | — |
Long Context Too close to call
o1-mini: 40.1 (#161), Step 3: 40.3 (#157)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Longer Query | 1320 | 1326 |
Writing & Preference Step 3 leads
o1-mini: 48.4 (#202), Step 3: 54.3 (#151)
| Benchmark | o1-mini | Step 3 |
|---|---|---|
| LMArena Text | 1317 | 1350 |
| LMArena Creative Writing | 1244 | 1321 |
| LMArena Multi-Turn | 1314 | 1341 |
| Short-Story Creative Writing | 64.9% | — |
| LiveBench Language | 40.9% | — |
Frequently asked questions
Is o1-mini better than Step 3?
Step 3 is the stronger model overall, scoring 40.5 to 34.0 on the Noometry Index.
Is o1-mini or Step 3 better for coding?
Step 3 scores higher on coding benchmarks: 40.1 versus 35.5 in the Noometry coding category.
How many benchmarks do o1-mini and Step 3 share?
15 benchmarks have published results for both models. o1-mini has 39 scored results on Noometry and Step 3 has 17.