Model comparison
Gemma 2B vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 43.8 to 29.1 on the Noometry Index.
Last verified . 0 shared benchmarks.
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StepFunSummary
- The widest gap is in coding, where Step 5 Preview leads 50.6 to 28.9.
- Gemma 2B has downloadable open weights; the other is API-only.
Side by side
| Gemma 2B | Step 5 Preview | |
|---|---|---|
| Provider | StepFun | |
| Noometry Index | 29.1 | 43.8 |
| Released | 2024-02-21 | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 23 | 3 |
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Category by category
Coding Step 5 Preview leads
Gemma 2B: 28.9 (#300), Step 5 Preview: 50.6 (#40)
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena WebDev | — | 1569 |
| SciCode | — | 58.9% |
| LMArena Coding | 1010 | — |
| HumanEval+ | 20.7% | — |
| MBPP+ | 34.1% | — |
Reasoning Step 5 Preview leads
Gemma 2B: 17.9 (#275), Step 5 Preview: 38.0 (#58)
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| CritPt | — | 20.9% |
| LMArena Hard Prompts | 989 | — |
| BIG-Bench Hard | 35.2% | — |
| Epoch Capabilities Index | 93.57 | — |
| HellaSwag | 71.4% | — |
| PIQA | 77.3% | — |
| WinoGrande | 65.4% | — |
Math Not comparable
Gemma 2B: 27.6 (#237), Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena Math | 1009 | — |
| GSM8K | 17.7% | — |
Knowledge Not comparable
Gemma 2B: —, Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| ARC (AI2) Challenge | 42.1% | — |
| BoolQ | 69.4% | — |
| MMLU | 42.3% | — |
| TriviaQA | 53.2% | — |
Multilingual Not comparable
Gemma 2B: 23.1 (#289), Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 958 | — |
| LMArena Chinese | 986 | — |
| LMArena Russian | 937 | — |
Instruction Following Not comparable
Gemma 2B: 48.8 (#297), Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 971 | — |
Long Context Not comparable
Gemma 2B: 29.9 (#286), Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 981 | — |
Writing & Preference Not comparable
Gemma 2B: 24.1 (#303), Step 5 Preview: —
| Benchmark | Gemma 2B | Step 5 Preview |
|---|---|---|
| LMArena Text | 1002 | — |
| LMArena Creative Writing | 986 | — |
| LMArena Multi-Turn | 945 | — |
Frequently asked questions
Is Gemma 2B better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 43.8 to 29.1 on the Noometry Index.
Is Gemma 2B or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 50.6 versus 28.9 in the Noometry coding category.
How many benchmarks do Gemma 2B and Step 5 Preview share?
0 benchmarks have published results for both models. Gemma 2B has 23 scored results on Noometry and Step 5 Preview has 3.