Model comparison
Step 3.7 Flash vs Yi-1.5-34B
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 30.6 on the Noometry Index.
Last verified . 0 shared benchmarks.
StepFunSummary
- The widest gap is in math, where Step 3.7 Flash leads 42.9 to 27.5.
Side by side
| Step 3.7 Flash | Yi-1.5-34B | |
|---|---|---|
| Provider | StepFun | 01.AI |
| Noometry Index | 37.3 | 30.6 |
| Released | 2026-05-29 | 2024-05-13 |
| Weights | Open | Open |
| Context window | 256K | — |
| Max output | 256K | — |
| Input $ / M tokens | $0.18 | — |
| Output $ / M tokens | $1.11 | — |
| Results tracked | 5 | 21 |
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Category by category
Coding Step 3.7 Flash leads
Step 3.7 Flash: 40.0 (#150), Yi-1.5-34B: 32.4 (#272)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| SciCode | 40% | — |
| BigCodeBench Instruct | — | 33.9% |
| LMArena Coding | — | 1169 |
| BigCodeBench Complete | — | 43.8% |
| ALE-Bench | 694.12 | — |
Reasoning Too close to call
Step 3.7 Flash: 21.6 (#219), Yi-1.5-34B: 22.5 (#191)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| NYT Connections (extended) | 39.7% | — |
| CritPt | 2.3% | — |
| LMArena Hard Prompts | — | 1160 |
Math Step 3.7 Flash leads
Step 3.7 Flash: 42.9 (#82), Yi-1.5-34B: 27.5 (#249)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| MathArena Final-Answer Competitions | 68.5% | — |
| LMArena Math | — | 1182 |
| MATH Level 5 | — | 25.5% |
Knowledge Not comparable
Step 3.7 Flash: —, Yi-1.5-34B: 14.8 (#295)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| GPQA Diamond | — | 32% |
| LMArena Expert | — | 1144 |
Multilingual Not comparable
Step 3.7 Flash: —, Yi-1.5-34B: 32.3 (#256)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Non-English | — | 1121 |
| LMArena Chinese | — | 1213 |
| LMArena French | — | 1156 |
| LMArena German | — | 1111 |
| LMArena Japanese | — | 1021 |
| LMArena Korean | — | 1005 |
| LMArena Russian | — | 1091 |
| LMArena Spanish | — | 1121 |
Instruction Following Not comparable
Step 3.7 Flash: —, Yi-1.5-34B: 59.2 (#257)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Instruction Following | — | 1139 |
Long Context Not comparable
Step 3.7 Flash: —, Yi-1.5-34B: 34.6 (#248)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Longer Query | — | 1143 |
Writing & Preference Not comparable
Step 3.7 Flash: —, Yi-1.5-34B: 37.4 (#257)
| Benchmark | Step 3.7 Flash | Yi-1.5-34B |
|---|---|---|
| LMArena Text | — | 1173 |
| LMArena Creative Writing | — | 1135 |
| LMArena Multi-Turn | — | 1153 |
Frequently asked questions
Is Step 3.7 Flash better than Yi-1.5-34B?
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 30.6 on the Noometry Index.
Is Step 3.7 Flash or Yi-1.5-34B better for coding?
Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 32.4 in the Noometry coding category.
How many benchmarks do Step 3.7 Flash and Yi-1.5-34B share?
0 benchmarks have published results for both models. Step 3.7 Flash has 5 scored results on Noometry and Yi-1.5-34B has 21.