Model comparison
Gemini 1.5 Flash 8B vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.9 on the Noometry Index.
Last verified . 14 shared benchmarks.
Google
StepFunSummary
- They share 14 benchmarks with published results for both. Gemini 1.5 Flash 8B scores higher in 0 categories and Step 5 Preview in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 5 Preview leads 46.1 to 14.2.
Side by side
| Gemini 1.5 Flash 8B | Step 5 Preview | |
|---|---|---|
| Provider | StepFun | |
| Noometry Index | 29.9 | 47.9 |
| Released | 2024-10-03 | 2026-09-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 21 | 18 |
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Category by category
Coding Step 5 Preview leads
Gemini 1.5 Flash 8B: 35.5 (#225), Step 5 Preview: 51.8 (#36)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1218 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
Reasoning Step 5 Preview leads
Gemini 1.5 Flash 8B: 20.0 (#244), Step 5 Preview: 40.0 (#57)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1209 | 1465 |
| CritPt | — | 20.9% |
| DTBench | 50% | — |
Math Step 5 Preview leads
Gemini 1.5 Flash 8B: 14.2 (#302), Step 5 Preview: 46.1 (#72)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Math | 1207 | 1470 |
| OTIS Mock AIME 2024-2025 | 4.6% | — |
| ProofBench | — | 42% |
Knowledge Step 5 Preview leads
Gemini 1.5 Flash 8B: 16.0 (#289), Step 5 Preview: 41.2 (#112)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1185 | 1470 |
| GPQA Diamond | 33% | — |
Multimodal Step 5 Preview leads
Gemini 1.5 Flash 8B: 28.2 (#115), Step 5 Preview: 41.0 (#41)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Vision | 1044 | 1267 |
Multilingual Step 5 Preview leads
Gemini 1.5 Flash 8B: 38.5 (#229), Step 5 Preview: 53.8 (#54)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1215 | 1432 |
| LMArena Chinese | 1231 | 1519 |
| LMArena Russian | 1236 | 1436 |
| LMArena Spanish | 1212 | 1439 |
| LMArena French | 1234 | — |
| LMArena German | 1206 | — |
| LMArena Japanese | 1150 | — |
| LMArena Korean | 1140 | — |
Instruction Following Step 5 Preview leads
Gemini 1.5 Flash 8B: 62.8 (#236), Step 5 Preview: 76.0 (#50)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1199 | 1444 |
Long Context Step 5 Preview leads
Gemini 1.5 Flash 8B: 37.0 (#225), Step 5 Preview: 44.5 (#64)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1219 | 1455 |
Writing & Preference Step 5 Preview leads
Gemini 1.5 Flash 8B: 42.8 (#232), Step 5 Preview: 62.8 (#71)
| Benchmark | Gemini 1.5 Flash 8B | Step 5 Preview |
|---|---|---|
| LMArena Text | 1226 | 1442 |
| LMArena Creative Writing | 1218 | 1410 |
| LMArena Multi-Turn | 1185 | 1447 |
Frequently asked questions
Is Gemini 1.5 Flash 8B better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 29.9 on the Noometry Index.
Is Gemini 1.5 Flash 8B or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 35.5 in the Noometry coding category.
How many benchmarks do Gemini 1.5 Flash 8B and Step 5 Preview share?
14 benchmarks have published results for both models. Gemini 1.5 Flash 8B has 21 scored results on Noometry and Step 5 Preview has 18.