Stepfun Releases Step-5-Preview with 1M Context Window
October 15, 2026
Step-5-Preview is a flagship model designed for agentic workflows, featuring a 1M token context window. The model scales up to 600B parameters and targets high-performance software engineering and professional financial knowledge tasks.
HOW THIS AFFECTS YOU
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builderYou can leverage the 1M context window for complex, long-form agentic reasoning tasks.
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founderThis provides a specialized alternative for building vertical AI agents in finance and engineering.