Model comparison
o3-pro vs Step 1o Turbo 202506
o3-pro is the stronger model overall, scoring 42.9 to 39.7 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in long context, where o3-pro leads 72.2 to 41.0.
Side by side
| o3-pro | Step 1o Turbo 202506 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 42.9 | 39.7 |
| Released | 2025-06-10 | — |
| Weights | Proprietary | Proprietary |
| Context window | 200K | — |
| Max output | 100K | — |
| Input $ / M tokens | $20 | — |
| Output $ / M tokens | $80 | — |
| Results tracked | 12 | 14 |
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Category by category
Coding o3-pro leads
o3-pro: 55.5 (#24), Step 1o Turbo 202506: 39.2 (#160)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| Aider Polyglot | 84.9% | — |
| WeirdML | 58.2% | — |
| LMArena Coding | — | 1339 |
Reasoning Step 1o Turbo 202506 leads
o3-pro: 23.8 (#171), Step 1o Turbo 202506: 26.8 (#129)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| ARC-AGI-2 | 4.9% | — |
| Kagi LLM Benchmark | 72.1% | — |
| ARC-AGI-1 | 59.3% | — |
| LMArena Hard Prompts | — | 1335 |
| DTBench | 86.9% | — |
| LMCA | 38.5% | — |
| Epoch Capabilities Index | 147.42 | — |
Math Not comparable
o3-pro: —, Step 1o Turbo 202506: 36.6 (#164)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Math | — | 1318 |
Knowledge Step 1o Turbo 202506 leads
o3-pro: 29.5 (#238), Step 1o Turbo 202506: 36.1 (#176)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| Confabulations | 14.2% | — |
| Vectara Hallucination Rate | 23.3% | — |
| LMArena Expert | — | 1308 |
Multimodal Not comparable
o3-pro: —, Step 1o Turbo 202506: 36.1 (#80)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Vision | — | 1186 |
Multilingual Not comparable
o3-pro: —, Step 1o Turbo 202506: 45.3 (#173)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Non-English | — | 1313 |
| LMArena Chinese | — | 1380 |
| LMArena German | — | 1314 |
| LMArena Russian | — | 1327 |
Instruction Following Not comparable
o3-pro: —, Step 1o Turbo 202506: 69.2 (#176)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Instruction Following | — | 1310 |
Long Context o3-pro leads
o3-pro: 72.2 (#1), Step 1o Turbo 202506: 41.0 (#146)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| Fiction.LiveBench | 97.2% | — |
| LMArena Longer Query | — | 1348 |
Writing & Preference o3-pro leads
o3-pro: 57.1 (#133), Step 1o Turbo 202506: 53.1 (#160)
| Benchmark | o3-pro | Step 1o Turbo 202506 |
|---|---|---|
| LMArena Text | — | 1336 |
| LMArena Creative Writing | — | 1307 |
| Short-Story Creative Writing | 84.4% | — |
| LMArena Multi-Turn | — | 1340 |
Frequently asked questions
Is o3-pro better than Step 1o Turbo 202506?
o3-pro is the stronger model overall, scoring 42.9 to 39.7 on the Noometry Index.
Is o3-pro or Step 1o Turbo 202506 better for coding?
o3-pro scores higher on coding benchmarks: 55.5 versus 39.2 in the Noometry coding category.
How many benchmarks do o3-pro and Step 1o Turbo 202506 share?
0 benchmarks have published results for both models. o3-pro has 12 scored results on Noometry and Step 1o Turbo 202506 has 14.