Model record
Step 3.7 Flash model overview
Step 3.7 Flash is a open weights model from StepFun. It was released on May 29, 2026. Its strongest case is apache-licensed weights, while buyers should account for combined weights and api access do not fit the access field.
Step 3.7 Flash benchmark snapshot
| Evaluation | Reported score | What it probes |
|---|---|---|
| MMLU-Pro | Not reported | Broad knowledge and multi-step reasoning |
| GPQA Diamond | Not reported | Graduate-level science reasoning |
| SWE-bench Verified | Not reported | Verified real-repository issue resolution |
| LiveCodeBench | Not reported | Contamination-aware competitive programming |
| SWE-Bench Pro | Not reported | Longer, harder professional software tasks |
| Artificial Analysis Intelligence Index | Not reported | Composite third-party capability index; version matters |
Scores are percentages reported by model creators or benchmark maintainers under varying settings. A blank is preferable to an inferred result. See our methodology.
Step 3.7 Flash strengths
- Apache-licensed weights
- 256K context
- Low active size
Step 3.7 Flash limitations
- Combined weights and API access do not fit the access field
- Cached-input pricing is not represented
Editorial take: Benchmark rank should narrow a shortlist, not close a purchase. Run a private evaluation with representative prompts, failure cases, latency targets, and total token costs.
Source record
Specifications and scores are linked to the best source located during review. Provider-reported results are not presented as third-party lab reproductions.
Source limitation: Official model card: https://huggingface.co/stepfun-ai/Step-3.7-Flash. Pricing: https://platform.stepfun.ai/docs/en/guides/pricing/details
Read StepFun Step 3.7 Flash release ↗