Model comparison
o3-mini vs Step 1o Turbo 202506
Step 1o Turbo 202506 is the stronger model overall, scoring 39.1 to 36.7 on the Noometry Index.
Last verified . 13 shared benchmarks.
StepFunSummary
- They share 13 benchmarks with published results for both. o3-mini scores higher in 4 categories and Step 1o Turbo 202506 in 4 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 1o Turbo 202506 leads 25.7 to 16.3.
Side by side
| o3-mini | Step 1o Turbo 202506 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 36.7 | 39.1 |
| Released | 2024-12-20 | — |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 100K | — |
| Input $ / M tokens | $1.10 | — |
| Output $ / M tokens | $4.40 | — |
| Results tracked | 51 | 14 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding o3-mini leads
o3-mini: 41.4 (#116), Step 1o Turbo 202506: 38.6 (#158)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Coding | 1378 | 1339 |
| Aider Polyglot | 60.4% | — |
| SciCode | 39.8% | — |
| GSO | 1.3% | — |
| WeirdML | 43.7% | — |
| LiveBench Coding | 82.7% | — |
| CadEval | 54% | — |
Agentic & Tool Use Not comparable
o3-mini: 29.3 (#79), Step 1o Turbo 202506: —
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| Cybench | 22.5% | — |
Reasoning Step 1o Turbo 202506 leads
o3-mini: 16.3 (#295), Step 1o Turbo 202506: 25.7 (#127)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Hard Prompts | 1366 | 1336 |
| ARC-AGI-2 | 3% | — |
| SimpleBench | 22.8% | — |
| ARC-AGI-1 | 34.5% | — |
| CritPt | 0.3% | — |
| Chess Puzzles | 17% | — |
| LiveBench Reasoning | 89.6% | — |
| Mystery Game Puzzles | 7% | — |
| DTBench | 68.8% | — |
| LiveBench Data Analysis | 70.6% | — |
| LMCA | 19% | — |
| Epoch Capabilities Index | 140.35 | — |
| ForecastBench | 59.6 | — |
| LiveBench | 75.9% | — |
Math Step 1o Turbo 202506 leads
o3-mini: 27.6 (#236), Step 1o Turbo 202506: 33.9 (#163)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Math | 1396 | 1318 |
| FrontierMath (Tiers 1-3) | 18.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 76.9% | — |
| LiveBench Math | 77.3% | — |
| MATH Level 5 | 96.5% | — |
| FrontierMath (Feb 2025 set) | 12.4% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge o3-mini leads
o3-mini: 38.3 (#135), Step 1o Turbo 202506: 35.5 (#174)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Expert | 1364 | 1308 |
| GPQA Diamond | 77% | — |
| SimpleQA Verified | 15.3% | — |
| Confabulations | 17.9% | — |
Multimodal Not comparable
o3-mini: —, Step 1o Turbo 202506: 35.4 (#75)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Vision | — | 1186 |
Multilingual Too close to call
o3-mini: 45.9 (#159), Step 1o Turbo 202506: 45.5 (#168)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Non-English | 1319 | 1313 |
| LMArena Chinese | 1379 | 1380 |
| LMArena German | 1303 | 1315 |
| LMArena Russian | 1304 | 1327 |
| LMArena French | 1333 | — |
| LMArena Japanese | 1286 | — |
| LMArena Korean | 1314 | — |
| LMArena Spanish | 1321 | — |
Instruction Following o3-mini leads
o3-mini: 75.3 (#67), Step 1o Turbo 202506: 69.4 (#171)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Instruction Following | 1338 | 1311 |
| LiveBench Instruction Following | 84.4% | — |
Long Context Step 1o Turbo 202506 leads
o3-mini: 33.8 (#251), Step 1o Turbo 202506: 41.1 (#141)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Longer Query | 1343 | 1350 |
| Fiction.LiveBench | 50% | — |
Writing & Preference Step 1o Turbo 202506 leads
o3-mini: 50.4 (#177), Step 1o Turbo 202506: 53.4 (#154)
| Benchmark | o3-mini | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Text | 1337 | 1336 |
| LMArena Creative Writing | 1286 | 1308 |
| LMArena Multi-Turn | 1320 | 1341 |
| Short-Story Creative Writing | 61.7% | — |
| LiveBench Language | 50.7% | — |
Frequently asked questions
Is o3-mini better than Step 1o Turbo 202506?
Step 1o Turbo 202506 is the stronger model overall, scoring 39.1 to 36.7 on the Noometry Index.
Is o3-mini or Step 1o Turbo 202506 better for coding?
o3-mini scores higher on coding benchmarks: 41.4 versus 38.6 in the Noometry coding category.
How many benchmarks do o3-mini and Step 1o Turbo 202506 share?
13 benchmarks have published results for both models. o3-mini has 51 scored results on Noometry and Step 1o Turbo 202506 has 14.