Step-3.5-Flash
Step-3.5-Flash is StepFun's fast, cost-effective text model optimized for quick inference. Built on their Step3 architecture, it offers strong performance across text tasks with low latency and efficient token usage, ideal for production workloads requiring speed and cost efficiency.
Benchmark results
| Benchmark | Score | Tags | Source |
|---|---|---|---|
| AIME 2025 | 97.3% | self-reported llm-stats | link → |
| BrowseComp | 69.0% | self-reported llm-stats | link → |
| IMO-AnswerBench | 85.4% | self-reported llm-stats | link → |
| LiveCodeBench v6 | 86.4% | self-reported llm-stats | link → |
| SWE-Bench Verified | 74.4% | self-reported llm-stats | link → |
| Tau-bench | 88.2% | self-reported llm-stats | link → |
| Terminal-Bench 2.0 | 51.0% | self-reported llm-stats | link → |