Model comparison
Chatgpt 4o Latest 20250326 vs Step 3
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 40.5 on the Noometry Index.
Last verified . 17 shared benchmarks.
StepFunSummary
- They share 17 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 9 categories and Step 3 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Chatgpt 4o Latest 20250326 leads 62.6 to 54.3.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 75% for Chatgpt 4o Latest 20250326 and 62.3% for Step 3.
- Step 3 has downloadable open weights; the other is API-only.
Side by side
| Chatgpt 4o Latest 20250326 | Step 3 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 43.8 | 40.5 |
| Released | — | — |
| Weights | Proprietary | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 17 |
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Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.6 (#122), Step 3: 40.1 (#147)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Coding | 1413 | 1367 |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 33.8 (#71), Step 3: 28.4 (#105)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| Kagi LLM Benchmark | 75% | 62.3% |
| LMArena Hard Prompts | 1424 | 1355 |
Math Too close to call
Chatgpt 4o Latest 20250326: 38.6 (#134), Step 3: 37.6 (#148)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Math | 1407 | 1366 |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.2 (#137), Step 3: 36.8 (#164)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Expert | 1401 | 1333 |
| Confabulations | 16.6% | — |
Multimodal Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 39.6 (#58), Step 3: 35.5 (#86)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Vision | 1243 | 1177 |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 52.9 (#76), Step 3: 46.3 (#159)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Non-English | 1419 | 1327 |
| LMArena Chinese | 1457 | 1397 |
| LMArena German | 1423 | 1371 |
| LMArena Korean | 1396 | 1269 |
| LMArena Russian | 1429 | 1331 |
| LMArena Spanish | 1434 | 1371 |
| LMArena French | 1446 | — |
| LMArena Japanese | 1405 | — |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.0 (#107), Step 3: 70.4 (#164)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1332 |
Long Context Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 43.1 (#107), Step 3: 40.3 (#157)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Longer Query | 1413 | 1326 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.6 (#72), Step 3: 54.3 (#151)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 3 |
|---|---|---|
| LMArena Text | 1429 | 1350 |
| LMArena Creative Writing | 1405 | 1321 |
| LMArena Multi-Turn | 1454 | 1341 |
| EQ-Bench Creative Writing | 1501 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Step 3?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.8 to 40.5 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Step 3 better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.6 versus 40.1 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Step 3 share?
17 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Step 3 has 17.