Step 5 Preview Launch Night 🚀 @SF
​We just launched Step 5 Preview, and we'd love for you to be among the first to see it up close.
​Co-hosted by StepFun and Together AI, this launch night brings together founders, developers, and AI builders for a first look at the model, a panel on what comes next, and an evening of conversations over food and drinks.
​Step 5 Preview is StepFun’s new open-weights flagship LLM for real-world agentic work: coding, professional knowledge work, and finance. It delivers frontier-level results at a cost designed to make running agents all day affordable. Available now via API, with open weights releasing October 15.
​Meet the model. Meet fellow builders. Whether you're building agents or curious about what Step 5 Preview can do, join us in San Francisco to explore the model and connect with the people building with AI.
​Meet the Speakers
​Hongyu Zhou Pretraining Researcher @ StepFun
​Dan Fu VP of Kernels @ Together AI
​Mar Hershenson Co-founder & Managing Partner @ Pear VC
​Saoud Rizwan, Founder @ Cline
​Agenda
​6:00 PM · Check-in, bites, drinks & networking
​6:30 PM · Meet Step 5 Preview
​Meet the team behind the model. Pretraining researcher Hongyu Zhou will introduce Step 5 Preview, followed by a live Q&A. Bring your questions about the model and what you need as you build agents.
​7:15 PM · Panel: Build for the Next Model
​As models get better, what's still worth building? Founders and builders on product opportunities and lasting value.
​8:00 PM · Find Your Match
​Meet fellow founders, developers, and builders. Pick a sticker that reflects your role or interests, then use it to start a conversation over food and drinks.
​9:00 PM · Wrap-up
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​Who Should Join
​Developers, founders, researchers, product teams, and investors interested in building with AI. Whether you're already working on agents or exploring what the latest models can do, come for the model and stay for the people.
​About StepFun
​StepFun is a leading foundation model company committed to the long-term pursuit of AGI. Its Step model family spans language, audio, multimodal, and reasoning capabilities. StepFun also works closely with intelligent devices, with its models deployed across smartphones, automotive, and in-car agent experiences.
​Step 5 Preview is StepFun’s latest flagship LLM.
​→ API Platform: platform.stepfun.ai
→ Step 5 Preview: Model overview
→ X: @StepFun_ai
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​About Together AI
​Together AI, the AI Native Cloud, is purpose-built for AI engineers. AI application developers get high-performance inference that scales reliably, fine-tuning and reinforcement learning for creating frontier-level specialized models, and pre-training at massive scale for fully custom intelligence, all around a marketplace of leading open models that teams can run, adapt, and own. Trusted by Cursor, Decagon, ElevenLabs, Salesforce, and Zoom, Together serves 400+ trillion tokens a month.
​→ X: @togethercompute