Model comparison
Grok 4.1 vs Step 2 16k Exp 202412
Grok 4.1 is the stronger model overall, scoring 41.5 to 39.2 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. Grok 4.1 scores higher in 7 categories and Step 2 16k Exp 202412 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Grok 4.1 leads 62.4 to 52.3.
Side by side
| Grok 4.1 | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | xAI | StepFun |
| Noometry Index | 41.5 | 39.2 |
| Released | 2025-11-17 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 19 | 12 |
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Category by category
Coding Step 2 16k Exp 202412 leads
Grok 4.1: 33.7 (#253), Step 2 16k Exp 202412: 38.5 (#174)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1445 | 1316 |
| LMArena WebDev | 1214 | — |
Agentic & Tool Use Not comparable
Grok 4.1: 34.1 (#49), Step 2 16k Exp 202412: —
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| Cybench | 39% | — |
Reasoning Grok 4.1 leads
Grok 4.1: 29.5 (#91), Step 2 16k Exp 202412: 25.9 (#142)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1299 |
Math Grok 4.1 leads
Grok 4.1: 38.9 (#120), Step 2 16k Exp 202412: 36.3 (#169)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1422 | 1304 |
Knowledge Grok 4.1 leads
Grok 4.1: 39.5 (#133), Step 2 16k Exp 202412: 35.2 (#187)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1417 | 1279 |
Multilingual Grok 4.1 leads
Grok 4.1: 53.4 (#68), Step 2 16k Exp 202412: 43.7 (#181)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1425 | 1290 |
| LMArena Chinese | 1465 | 1331 |
| LMArena Russian | 1434 | 1324 |
| LMArena French | 1448 | — |
| LMArena German | 1446 | — |
| LMArena Japanese | 1397 | — |
| LMArena Korean | 1407 | — |
| LMArena Spanish | 1438 | — |
Instruction Following Grok 4.1 leads
Grok 4.1: 73.8 (#111), Step 2 16k Exp 202412: 67.9 (#192)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1400 | 1287 |
Long Context Grok 4.1 leads
Grok 4.1: 43.2 (#100), Step 2 16k Exp 202412: 39.7 (#170)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1416 | 1307 |
Writing & Preference Grok 4.1 leads
Grok 4.1: 62.4 (#75), Step 2 16k Exp 202412: 52.3 (#173)
| Benchmark | Grok 4.1 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1437 | 1321 |
| LMArena Creative Writing | 1411 | 1328 |
| LMArena Multi-Turn | 1437 | 1292 |
Frequently asked questions
Is Grok 4.1 better than Step 2 16k Exp 202412?
Grok 4.1 is the stronger model overall, scoring 41.5 to 39.2 on the Noometry Index.
Is Grok 4.1 or Step 2 16k Exp 202412 better for coding?
Step 2 16k Exp 202412 scores higher on coding benchmarks: 38.5 versus 33.7 in the Noometry coding category.
How many benchmarks do Grok 4.1 and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Step 2 16k Exp 202412 has 12.