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StepFunactive

Step 3.7 Flash

Released at: May 28, 2026

API StatusAvailable for integration
Context Window256,000 tokens
Input Price / MTok$0.20
Output Price / MTok$1.15

Model Overview

StepFun · Active Model

  • Long-Context
  • API Available
  • Vetted Benchmarks
  • Production Ready

Step 3.7 Flash is StepFun's latest high-efficiency multimodal Mixture-of-Experts model. It pairs a 196B-parameter language backbone with a vision encoder for native image and video understanding, activating roughly 11B parameters...

Developer
StepFun
Release Date
May 28, 2026
Context Window
256,000 tokens≈ 341 words
API Access
Publicly AvailableIntegrate via official API
Input Cost
$0.20per million tokens
Output Cost
$1.15per million tokens
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Vetted Benchmarks

mmluScore: 84.5% (Ranked top 64%)
humanevalScore: 86% (Ranked top 64%)
mathScore: 66.8% (Ranked top 66%)
mt_benchScore: 8.9% (Ranked top 63%)
gpqaScore: 44% (Ranked top 68%)
hellaswagScore: 85.8% (Ranked top 69%)

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