Model comparison
Grok 3 vs Step 2 16k Exp 202412
Grok 3 is the stronger model overall, scoring 39.6 to 38.6 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. Grok 3 scores higher in 6 categories and Step 2 16k Exp 202412 in 2 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Grok 3 leads 46.0 to 34.6.
Side by side
| Grok 3 | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | xAI | StepFun |
| Noometry Index | 39.6 | 38.6 |
| Released | 2025-04-09 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 40 | 12 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Grok 3 leads
Grok 3: 41.5 (#113), Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1432 | 1316 |
| Aider Polyglot | 53.3% | — |
| WeirdML | 37.2% | — |
Agentic & Tool Use Not comparable
Grok 3: 30.2 (#69), Step 2 16k Exp 202412: —
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| BALROG | 29.5% | — |
Reasoning Step 2 16k Exp 202412 leads
Grok 3: 13.8 (#322), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1433 | 1299 |
| ARC-AGI-2 | 0% | — |
| SimpleBench | 36.1% | — |
| Kagi LLM Benchmark | 61.3% | — |
| ARC-AGI-1 | 5.5% | — |
| Epoch Capabilities Index | 138.34 | — |
Math Grok 3 leads
Grok 3: 36.2 (#122), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1390 | 1305 |
| OTIS Mock AIME 2024-2025 | 55.6% | — |
| Omni-MATH | 46.4% | — |
| MATH Level 5 | 88.7% | — |
| FrontierMath (Feb 2025 set) | 3.8% | — |
| FrontierMath Tier 4 (v1) | 0% | — |
Knowledge Grok 3 leads
Grok 3: 46.0 (#76), Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1420 | 1279 |
| GPQA Diamond | 75.8% | — |
| MMLU-Pro | 78.8% | — |
| Confabulations | 14.2% | — |
| Vectara Hallucination Rate | 5.8% | — |
| GPQA (HELM) | 65% | — |
Multilingual Grok 3 leads
Grok 3: 52.5 (#81), Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1411 | 1290 |
| LMArena Chinese | 1448 | 1331 |
| LMArena Russian | 1416 | 1324 |
| LMArena French | 1460 | — |
| LMArena German | 1431 | — |
| LMArena Japanese | 1389 | — |
| LMArena Korean | 1374 | — |
| LMArena Spanish | 1417 | — |
Instruction Following Grok 3 leads
Grok 3: 75.2 (#69), Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1409 | 1287 |
| IFEval | 88.4% | — |
Long Context Too close to call
Grok 3: 38.7 (#187), Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1439 | 1307 |
| Fiction.LiveBench | 58.3% | — |
Writing & Preference Grok 3 leads
Grok 3: 56.0 (#136), Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | Grok 3 | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1426 | 1321 |
| LMArena Creative Writing | 1414 | 1328 |
| LMArena Multi-Turn | 1424 | 1292 |
| Short-Story Creative Writing | 76.4% | — |
| EQ-Bench Creative Writing | 1186 | — |
| WildBench | 84.9% | — |
Frequently asked questions
Is Grok 3 better than Step 2 16k Exp 202412?
Grok 3 is the stronger model overall, scoring 39.6 to 38.6 on the Noometry Index.
Is Grok 3 or Step 2 16k Exp 202412 better for coding?
Grok 3 scores higher on coding benchmarks: 41.5 versus 37.9 in the Noometry coding category.
How many benchmarks do Grok 3 and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Grok 3 has 40 scored results on Noometry and Step 2 16k Exp 202412 has 12.