Model comparison
Llama 3-8B vs Step 5 Preview
Step 5 Preview is the stronger model overall, scoring 47.9 to 25.5 on the Noometry Index.
Last verified . 13 shared benchmarks.
Meta
StepFunSummary
- They share 13 benchmarks with published results for both. Llama 3-8B scores higher in 0 categories and Step 5 Preview in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 5 Preview leads 46.1 to 8.8.
- Llama 3-8B has downloadable open weights; the other is API-only.
Side by side
| Llama 3-8B | Step 5 Preview | |
|---|---|---|
| Provider | Meta | StepFun |
| Noometry Index | 25.5 | 47.9 |
| Released | 2024-04-18 | 2026-09-16 |
| Weights | Open | Proprietary |
| Context window | — | 1.02M |
| Max output | — | 66K |
| Input $ / M tokens | — | $1 |
| Output $ / M tokens | — | $2.70 |
| Results tracked | 34 | 18 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Step 5 Preview leads
Llama 3-8B: 31.0 (#289), Step 5 Preview: 51.8 (#36)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Coding | 1152 | 1480 |
| LMArena WebDev | — | 1564 |
| SciCode | — | 58.9% |
| BigCodeBench Instruct | 31.9% | — |
| BigCodeBench Complete | 36.9% | — |
| HumanEval+ | 56.7% | — |
| MBPP+ | 54.8% | — |
Reasoning Step 5 Preview leads
Llama 3-8B: 14.3 (#326), Step 5 Preview: 40.0 (#57)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Hard Prompts | 1133 | 1465 |
| CritPt | — | 20.9% |
| Chess Puzzles | 0% | — |
| DTBench | 43.9% | — |
| Adversarial NLI | 57.3% | — |
| Epoch Capabilities Index | 116.45 | — |
| ForecastBench | 58.6 | — |
| WinoGrande | 75.7% | — |
Math Step 5 Preview leads
Llama 3-8B: 8.8 (#323), Step 5 Preview: 46.1 (#72)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Math | 1151 | 1470 |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| ProofBench | — | 42% |
| MATH Level 5 | 6.1% | — |
Knowledge Step 5 Preview leads
Llama 3-8B: 7.8 (#308), Step 5 Preview: 41.2 (#112)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Expert | 1113 | 1470 |
| GPQA Diamond | 26.1% | — |
| ARC (AI2) Challenge | 82.8% | — |
| MMLU | 68.8% | — |
| OpenBookQA | 82.6% | — |
| TriviaQA | 67.7% | — |
Multimodal Not comparable
Llama 3-8B: —, Step 5 Preview: 41.0 (#41)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Vision | — | 1267 |
Multilingual Step 5 Preview leads
Llama 3-8B: 30.8 (#261), Step 5 Preview: 53.8 (#54)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Non-English | 1098 | 1432 |
| LMArena Chinese | 1076 | 1519 |
| LMArena Russian | 1109 | 1436 |
| LMArena Spanish | 1173 | 1439 |
| LMArena French | 1159 | — |
| LMArena German | 1104 | — |
| LMArena Japanese | 967 | — |
| LMArena Korean | 1004 | — |
Instruction Following Step 5 Preview leads
Llama 3-8B: 58.4 (#260), Step 5 Preview: 76.0 (#50)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Instruction Following | 1127 | 1444 |
Long Context Step 5 Preview leads
Llama 3-8B: 34.2 (#251), Step 5 Preview: 44.5 (#64)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Longer Query | 1128 | 1455 |
Writing & Preference Step 5 Preview leads
Llama 3-8B: 37.5 (#256), Step 5 Preview: 62.8 (#71)
| Benchmark | Llama 3-8B | Step 5 Preview |
|---|---|---|
| LMArena Text | 1166 | 1442 |
| LMArena Creative Writing | 1150 | 1410 |
| LMArena Multi-Turn | 1152 | 1447 |
Frequently asked questions
Is Llama 3-8B better than Step 5 Preview?
Step 5 Preview is the stronger model overall, scoring 47.9 to 25.5 on the Noometry Index.
Is Llama 3-8B or Step 5 Preview better for coding?
Step 5 Preview scores higher on coding benchmarks: 51.8 versus 31.0 in the Noometry coding category.
How many benchmarks do Llama 3-8B and Step 5 Preview share?
13 benchmarks have published results for both models. Llama 3-8B has 34 scored results on Noometry and Step 5 Preview has 18.