Model comparison
o1-mini vs Step 3.7 Flash
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 34.0 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in reasoning, where Step 3.7 Flash leads 21.6 to 8.8.
- Step 3.7 Flash has downloadable open weights; the other is API-only.
Side by side
| o1-mini | Step 3.7 Flash | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 34.0 | 37.3 |
| Released | 2024-09-12 | 2026-05-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.18 |
| Output $ / M tokens | — | $1.11 |
| Results tracked | 39 | 5 |
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Category by category
Coding Step 3.7 Flash leads
o1-mini: 35.5 (#224), Step 3.7 Flash: 40.0 (#150)
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| Aider Polyglot | 32.9% | — |
| SciCode | — | 40% |
| WeirdML | 36.3% | — |
| LiveBench Coding | 48% | — |
| LMArena Coding | 1362 | — |
| ALE-Bench | — | 694.12 |
| HumanEval+ | 89% | — |
| MBPP+ | 78.8% | — |
Agentic & Tool Use Not comparable
o1-mini: 24.6 (#118), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| Cybench | 10% | — |
Reasoning Step 3.7 Flash leads
o1-mini: 8.8 (#346), Step 3.7 Flash: 21.6 (#219)
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| ARC-AGI-2 | 0.8% | — |
| SimpleBench | 18.1% | — |
| NYT Connections (extended) | — | 39.7% |
| ARC-AGI-1 | 14% | — |
| CritPt | — | 2.3% |
| LiveBench Reasoning | 72.3% | — |
| LMArena Hard Prompts | 1333 | — |
| LiveBench Data Analysis | 57.9% | — |
| Epoch Capabilities Index | 135.82 | — |
| LiveBench | 57.8% | — |
Math Step 3.7 Flash leads
o1-mini: 35.4 (#186), Step 3.7 Flash: 42.9 (#82)
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| OTIS Mock AIME 2024-2025 | 46.9% | — |
| LiveBench Math | 62% | — |
| LMArena Math | 1358 | — |
| MATH Level 5 | 89.2% | — |
| FrontierMath (Feb 2025 set) | 1.7% | — |
Knowledge Not comparable
o1-mini: 34.9 (#192), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| GPQA Diamond | 62.4% | — |
| Confabulations | 18.6% | — |
| LMArena Expert | 1316 | — |
Multilingual Not comparable
o1-mini: 43.6 (#182), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1289 | — |
| LMArena Chinese | 1314 | — |
| LMArena French | 1293 | — |
| LMArena German | 1278 | — |
| LMArena Japanese | 1245 | — |
| LMArena Korean | 1223 | — |
| LMArena Russian | 1283 | — |
| LMArena Spanish | 1303 | — |
Instruction Following Not comparable
o1-mini: 66.7 (#206), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| LiveBench Instruction Following | 65.4% | — |
| LMArena Instruction Following | 1304 | — |
Long Context Not comparable
o1-mini: 40.1 (#161), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1320 | — |
Writing & Preference Not comparable
o1-mini: 48.4 (#202), Step 3.7 Flash: —
| Benchmark | o1-mini | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1317 | — |
| LMArena Creative Writing | 1244 | — |
| Short-Story Creative Writing | 64.9% | — |
| LMArena Multi-Turn | 1314 | — |
| LiveBench Language | 40.9% | — |
Frequently asked questions
Is o1-mini better than Step 3.7 Flash?
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 34.0 on the Noometry Index.
Is o1-mini or Step 3.7 Flash better for coding?
Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 35.5 in the Noometry coding category.
How many benchmarks do o1-mini and Step 3.7 Flash share?
0 benchmarks have published results for both models. o1-mini has 39 scored results on Noometry and Step 3.7 Flash has 5.