StepFun news
The latest StepFun news, : StepFun releases Step 5 Preview open weights with 600B parameters and 1M context.
StepFun is the developer of the Step 5 Preview, a flagship mixture‑of‑experts model designed for agentic software engineering, knowledge work and finance tasks. The model comprises about 600 billion parameters, activates roughly 27 billion per token, supports a 1 million‑token context and is priced at $1 per input, as announced in the latest launch.
4 stories mentioning StepFun since 9 September 2026, newest first, each with its sources and discussion. Follow to see new ones on your front page.
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StepFun releases Step 5 Preview open weights with 600B parameters and 1M context
StepFun has released Step 5 Preview as open weights on Hugging Face and ModelScope. The model is a sparse Mixture-of-Experts with 600B total parameters, 27B active per token, and up to 1M tokens of context. It is…
1 sourceMarkTechPost -
StepFun launches Step 5 Preview with 1M-token context and $1 input pricing
StepFun announced Step 5 Preview, its flagship mixture‑of‑experts model aimed at agentic software engineering, knowledge work, and finance tasks. The model totals about 600 billion parameters but activates roughly 27…
1 sourceMarkTechPost -
This looks promising: stepfun-ai/Step-5-Preview-BF16 · Hugging Face
this looks promising: stepfun-ai/Step-5-Preview-BF16 · Hugging Face Hugging Face Models Datasets Spaces Buckets new Docs Enterprise Pricing Website Tasks HuggingChat Collections Languages Organizations Community Blog…
1 source primary sourcehuggingface.co -
US agencies accuse six Chinese AI firms of large‑scale model theft
U.S. intelligence agencies — the NSA, CISA and the FBI — released a joint statement alleging that six Chinese artificial‑intelligence companies have been systematically extracting capabilities from leading American…
3 sources HN 8aol.comArs Technica AInbcnews.com
Questions about StepFun
What is the latest StepFun news?
As of 17 October 2026: StepFun releases Step 5 Preview open weights with 600B parameters and 1M context. StepFun has released Step 5 Preview as open weights on Hugging Face and ModelScope.
What is StepFun?
StepFun is the developer of the Step 5 Preview, a flagship mixture‑of‑experts model designed for agentic software engineering, knowledge work and finance tasks. The model comprises about 600 billion parameters, activates roughly 27 billion per token, supports a 1 million‑token context and is priced at $1 per input, as announced in the latest launch.