StepFun launches open-weights flagship Step 5 Preview, co-hosts SF launch night with Together AI
togethercompute · x · 2026-10-21
StepFun and Together AI are hosting a Step 5 Preview launch night in San Francisco on Thursday, Oct 22 (6-9 PM), with 250+ already registered.
- Step 5 Preview is StepFun's new open-weights flagship LLM, claiming frontier-level performance for real-world agents with affordable inference
- Pretraining researcher Hongyu Zhou will introduce the model with live Q&A; panelists include Dan Fu (VP of Kernels, Together AI), Mar Hershenson (Pear VC), Saoud Rizwan (founder, Cline) and Joey Wang (engineering lead, Harvey)
- Agenda: model intro, a panel on "what's worth building as models improve," and networking
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