BrianOnAIStepFun: Step3
byStepfun-Ai
Step3 is a cutting-edge multimodal reasoning model—built on a Mixture-of-Experts architecture with 321B total parameters and 38B active. It is designed end-to-end to minimize decoding costs while delivering top-tier performance in vision–language reasoning. Through the co-design of Multi-Matrix Factorization Attention (MFA) and Attention-FFN Disaggregation (AFD), Step3 maintains exceptional efficiency across both flagship and low-end accelerators.
Pricing
Input
$0.57 / 1M tokens
Output
$1.42 / 1M tokens
Specifications
Context Window66K tokens
Max Output66K tokens
Modalitymultimodal
Input Typesimage, text
Output Typestext
Strategic Analysis 🔒
Unlock vCAIO insights to make better model decisions:
- Governance Risk Rating (Low / Medium / High)
- Quality Tier Classification
- Best Use Cases & Tags
- Strategic Verdict from vCAIO
- AI-Verified Fit Scoring
Not sure if this model fits your use case?
Describe your task and get AI-verified recommendations in seconds.
Pricing last updated: Invalid Date