Model comparison
Chatgpt 4o Latest 20250326 vs Step 2 16k Exp 202412
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 38.6 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. Chatgpt 4o Latest 20250326 scores higher in 8 categories and Step 2 16k Exp 202412 in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Chatgpt 4o Latest 20250326 leads 62.8 to 52.5.
Side by side
| Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | OpenAI | StepFun |
| Noometry Index | 43.2 | 38.6 |
| Released | — | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 12 |
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Category by category
Coding Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 41.0 (#122), Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1413 | 1316 |
Reasoning Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 32.8 (#64), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1424 | 1299 |
| Kagi LLM Benchmark | 75% | — |
Math Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 35.8 (#134), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1407 | 1305 |
Knowledge Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 38.7 (#131), Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1400 | 1279 |
| Confabulations | 16.6% | — |
Multimodal Not comparable
Chatgpt 4o Latest 20250326: 38.9 (#54), Step 2 16k Exp 202412: —
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1243 | — |
Multilingual Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 53.1 (#72), Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1419 | 1290 |
| LMArena Chinese | 1456 | 1331 |
| LMArena Russian | 1429 | 1324 |
| LMArena French | 1447 | — |
| LMArena German | 1424 | — |
| LMArena Japanese | 1406 | — |
| LMArena Korean | 1397 | — |
| LMArena Spanish | 1435 | — |
Instruction Following Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 74.2 (#102), Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1403 | 1287 |
Long Context Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 43.1 (#104), Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1413 | 1307 |
Writing & Preference Chatgpt 4o Latest 20250326 leads
Chatgpt 4o Latest 20250326: 62.8 (#68), Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | Chatgpt 4o Latest 20250326 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1429 | 1321 |
| LMArena Creative Writing | 1406 | 1328 |
| LMArena Multi-Turn | 1454 | 1292 |
| EQ-Bench Creative Writing | 1501 | — |
Frequently asked questions
Is Chatgpt 4o Latest 20250326 better than Step 2 16k Exp 202412?
Chatgpt 4o Latest 20250326 is the stronger model overall, scoring 43.2 to 38.6 on the Noometry Index.
Is Chatgpt 4o Latest 20250326 or Step 2 16k Exp 202412 better for coding?
Chatgpt 4o Latest 20250326 scores higher on coding benchmarks: 41.0 versus 37.9 in the Noometry coding category.
How many benchmarks do Chatgpt 4o Latest 20250326 and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Chatgpt 4o Latest 20250326 has 21 scored results on Noometry and Step 2 16k Exp 202412 has 12.