Model comparison
Grok 2 Mini 2024 08 13 vs Step 3.5 Flash
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 37.7 on the Noometry Index.
Last verified . 17 shared benchmarks.
StepFunSummary
- They share 17 benchmarks with published results for both. Grok 2 Mini 2024 08 13 scores higher in 1 category and Step 3.5 Flash in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Step 3.5 Flash leads 58.8 to 47.3.
- Step 3.5 Flash has downloadable open weights; the other is API-only.
Side by side
| Grok 2 Mini 2024 08 13 | Step 3.5 Flash | |
|---|---|---|
| Provider | xAI | StepFun |
| Noometry Index | 37.7 | 42.3 |
| Released | 2024-08-13 | 2026-01-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.10 |
| Output $ / M tokens | — | $0.30 |
| Results tracked | 17 | 19 |
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Category by category
Coding Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 37.0 (#199), Step 3.5 Flash: 42.4 (#105)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Coding | 1269 | 1436 |
Reasoning Grok 2 Mini 2024 08 13 leads
Grok 2 Mini 2024 08 13: 24.8 (#159), Step 3.5 Flash: 22.2 (#202)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Hard Prompts | 1255 | 1411 |
| NYT Connections (extended) | — | 28.4% |
Math Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 35.4 (#185), Step 3.5 Flash: 42.6 (#84)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Math | 1265 | 1408 |
| MathArena Final-Answer Competitions | — | 66.8% |
Knowledge Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 33.9 (#200), Step 3.5 Flash: 39.6 (#132)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Expert | 1238 | 1421 |
Multilingual Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 41.4 (#208), Step 3.5 Flash: 50.5 (#119)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Non-English | 1257 | 1385 |
| LMArena Chinese | 1262 | 1447 |
| LMArena French | 1286 | 1421 |
| LMArena German | 1273 | 1405 |
| LMArena Japanese | 1213 | 1354 |
| LMArena Korean | 1195 | 1352 |
| LMArena Russian | 1261 | 1385 |
| LMArena Spanish | 1279 | 1419 |
Instruction Following Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 65.5 (#220), Step 3.5 Flash: 73.1 (#124)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Instruction Following | 1245 | 1385 |
Long Context Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 38.4 (#196), Step 3.5 Flash: 42.8 (#117)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Longer Query | 1266 | 1402 |
Writing & Preference Step 3.5 Flash leads
Grok 2 Mini 2024 08 13: 47.3 (#211), Step 3.5 Flash: 58.8 (#113)
| Benchmark | Grok 2 Mini 2024 08 13 | Step 3.5 Flash |
|---|---|---|
| LMArena Text | 1281 | 1403 |
| LMArena Creative Writing | 1242 | 1357 |
| LMArena Multi-Turn | 1265 | 1405 |
Frequently asked questions
Is Grok 2 Mini 2024 08 13 better than Step 3.5 Flash?
Step 3.5 Flash is the stronger model overall, scoring 42.3 to 37.7 on the Noometry Index.
Is Grok 2 Mini 2024 08 13 or Step 3.5 Flash better for coding?
Step 3.5 Flash scores higher on coding benchmarks: 42.4 versus 37.0 in the Noometry coding category.
How many benchmarks do Grok 2 Mini 2024 08 13 and Step 3.5 Flash share?
17 benchmarks have published results for both models. Grok 2 Mini 2024 08 13 has 17 scored results on Noometry and Step 3.5 Flash has 19.