Model comparison
Claude 2.1 vs Step 3.7 Flash
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 25.2 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in math, where Step 3.7 Flash leads 42.9 to 10.2.
- Step 3.7 Flash has downloadable open weights; the other is API-only.
Side by side
| Claude 2.1 | Step 3.7 Flash | |
|---|---|---|
| Provider | Anthropic | StepFun |
| Noometry Index | 25.2 | 37.3 |
| Released | 2023-11-21 | 2026-05-29 |
| Weights | Proprietary | Open |
| Context window | — | 256K |
| Max output | — | 256K |
| Input $ / M tokens | — | $0.18 |
| Output $ / M tokens | — | $1.11 |
| Results tracked | 7 | 5 |
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Category by category
Coding Step 3.7 Flash leads
Claude 2.1: 26.2 (#327), Step 3.7 Flash: 40.0 (#150)
Reasoning Too close to call
Claude 2.1: 21.4 (#221), Step 3.7 Flash: 21.6 (#219)
| Benchmark | Claude 2.1 | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | — | 39.7% |
| CritPt | — | 2.3% |
| DTBench | 51% | — |
| Epoch Capabilities Index | 119.27 | — |
| ForecastBench | 54.2 | — |
Math Step 3.7 Flash leads
Claude 2.1: 10.2 (#315), Step 3.7 Flash: 42.9 (#82)
| Benchmark | Claude 2.1 | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
Knowledge Not comparable
Claude 2.1: 15.4 (#292), Step 3.7 Flash: —
| Benchmark | Claude 2.1 | Step 3.7 Flash |
|---|---|---|
| GPQA Diamond | 33% | — |
| MMLU | 73.5% | — |
Frequently asked questions
Is Claude 2.1 better than Step 3.7 Flash?
Step 3.7 Flash is the stronger model overall, scoring 37.3 to 25.2 on the Noometry Index.
Is Claude 2.1 or Step 3.7 Flash better for coding?
Step 3.7 Flash scores higher on coding benchmarks: 40.0 versus 26.2 in the Noometry coding category.
How many benchmarks do Claude 2.1 and Step 3.7 Flash share?
0 benchmarks have published results for both models. Claude 2.1 has 7 scored results on Noometry and Step 3.7 Flash has 5.