stepfun

StepFun has released Step-3.7-Flash, a 198B-parameter sparse Mixture-of-Experts vision-language model that activates 11B parameters per token and delivers up to 400 tokens per second. The model supports a 256K context window, three selectable reasoning levels, and is priced at $0.20 per million input tokens (cache miss) and $1.15 per million output tokens.

StepFun has released Step-3.5-Flash-Base, a text generation model available on Hugging Face under Apache 2.0 license. The model is part of the Step 3.5 series and focuses on efficient inference.