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stepfun-ai / Step-3.5-Flash-Base

Text Generation198B52688Updated Mar 9, 2026
Hugging Face

Downloads

526

Likes

88

Last updated

Mar 9, 2026

License

apache-2.0

Step 3.5 Flash (visit website) is our most capable open-source foundation model, engineered to deliver frontier reasoning and agentic capabilities with exceptional efficiency. We also open-sourced the training codebase (SteptronOss), with support for continue pretrain, SFT, RL…

Tasks & library

  • text generation
  • transformers

Tags

  • transformers
  • step3p5
  • text-generation
  • custom_code

Technical specifications

Parameters198B
Librarytransformers
LanguagesNot available
Licenseapache-2.0