Model comparison
Claude 3 Opus vs Step 2 16k Exp 202412
Step 2 16k Exp 202412 is the stronger model overall, scoring 38.6 to 29.3 on the Noometry Index.
Last verified . 12 shared benchmarks.
StepFunSummary
- They share 12 benchmarks with published results for both. Claude 3 Opus scores higher in 0 categories and Step 2 16k Exp 202412 in 8 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 2 16k Exp 202412 leads 33.6 to 13.9.
Side by side
| Claude 3 Opus | Step 2 16k Exp 202412 | |
|---|---|---|
| Provider | Anthropic | StepFun |
| Noometry Index | 29.3 | 38.6 |
| Released | 2024-02-29 | — |
| Weights | Proprietary | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 46 | 12 |
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Category by category
Coding Step 2 16k Exp 202412 leads
Claude 3 Opus: 32.4 (#261), Step 2 16k Exp 202412: 37.9 (#170)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Coding | 1264 | 1316 |
| WeirdML | 19.2% | — |
| BigCodeBench Instruct | 45.5% | — |
| LiveBench Coding | 38.6% | — |
| BigCodeBench Complete | 57.4% | — |
| HumanEval+ | 77.4% | — |
| MBPP+ | 73.3% | — |
Agentic & Tool Use Not comparable
Claude 3 Opus: 24.3 (#110), Step 2 16k Exp 202412: —
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| Cybench | 10% | — |
| METR Time Horizons | 29.5% | — |
Reasoning Step 2 16k Exp 202412 leads
Claude 3 Opus: 14.2 (#318), Step 2 16k Exp 202412: 24.8 (#140)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1299 |
| SimpleBench | 23.5% | — |
| Chess Puzzles | 5% | — |
| EnigmaEval | 0.8% | — |
| LiveBench Reasoning | 40.6% | — |
| DTBench | 61.6% | — |
| LiveBench Data Analysis | 57.9% | — |
| LMCA | 17% | — |
| Epoch Capabilities Index | 126.91 | — |
| ForecastBench | 58.4 | — |
| LiveBench | 49.2% | — |
| WinoGrande | 88.5% | — |
Math Step 2 16k Exp 202412 leads
Claude 3 Opus: 13.9 (#293), Step 2 16k Exp 202412: 33.6 (#171)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Math | 1273 | 1305 |
| OTIS Mock AIME 2024-2025 | 4.7% | — |
| LiveBench Math | 43.6% | — |
| MATH Level 5 | 37.5% | — |
Knowledge Step 2 16k Exp 202412 leads
Claude 3 Opus: 24.5 (#262), Step 2 16k Exp 202412: 34.6 (#187)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Expert | 1223 | 1279 |
| GPQA Diamond | 47.2% | — |
| SimpleQA Verified | 12.6% | — |
| Confabulations | 22.7% | — |
| MMLU | 84.6% | — |
Multimodal Not comparable
Claude 3 Opus: 26.6 (#112), Step 2 16k Exp 202412: —
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Vision | 1023 | — |
Multilingual Step 2 16k Exp 202412 leads
Claude 3 Opus: 41.6 (#202), Step 2 16k Exp 202412: 43.9 (#176)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Non-English | 1258 | 1290 |
| LMArena Chinese | 1248 | 1331 |
| LMArena Russian | 1280 | 1324 |
| LMArena French | 1274 | — |
| LMArena German | 1258 | — |
| LMArena Japanese | 1204 | — |
| LMArena Korean | 1187 | — |
| LMArena Spanish | 1246 | — |
Instruction Following Step 2 16k Exp 202412 leads
Claude 3 Opus: 64.3 (#223), Step 2 16k Exp 202412: 68.1 (#187)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Instruction Following | 1248 | 1287 |
| LiveBench Instruction Following | 63.9% | — |
Long Context Step 2 16k Exp 202412 leads
Claude 3 Opus: 38.2 (#197), Step 2 16k Exp 202412: 39.7 (#165)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Longer Query | 1259 | 1307 |
Writing & Preference Step 2 16k Exp 202412 leads
Claude 3 Opus: 47.4 (#208), Step 2 16k Exp 202412: 52.5 (#168)
| Benchmark | Claude 3 Opus | Step 2 16k Exp 202412 |
|---|---|---|
| LMArena Text | 1262 | 1321 |
| LMArena Creative Writing | 1235 | 1328 |
| LMArena Multi-Turn | 1275 | 1292 |
| LiveBench Language | 50.4% | — |
Frequently asked questions
Is Claude 3 Opus better than Step 2 16k Exp 202412?
Step 2 16k Exp 202412 is the stronger model overall, scoring 38.6 to 29.3 on the Noometry Index.
Is Claude 3 Opus or Step 2 16k Exp 202412 better for coding?
Step 2 16k Exp 202412 scores higher on coding benchmarks: 37.9 versus 32.4 in the Noometry coding category.
How many benchmarks do Claude 3 Opus and Step 2 16k Exp 202412 share?
12 benchmarks have published results for both models. Claude 3 Opus has 46 scored results on Noometry and Step 2 16k Exp 202412 has 12.