StepFun
PulseAugur coverage of StepFun — every cluster mentioning StepFun across labs, papers, and developer communities, ranked by signal.
- 2026-10-15 product_launch StepFun has released its Step-5-Preview model, featuring a 600 billion parameter Mixture-of-Experts architecture with a 1 million token context window. source
- 2026-10-15 product_launch StepFun released its Step-5-Preview model, featuring a 1 million token context window and multimodal capabilities. source
- 2026-10-09 product_launch Stepfun has launched its "Step 5 Preview" model, featuring a 1 million token context window and competitive pricing. source
- 2026-06-10 product_launch Chinese AI startup Stepfun released its Step 3.7 Flash model. source
- 2026-06-08 funding Chinese AI startup StepFun is preparing to file for an initial public offering on the Hong Kong Stock Exchange. source
9 day(s) with sentiment data
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Replit switches default AI provider from Anthropic to OpenAI
Replit has switched its default AI model provider from Anthropic to OpenAI. This change positions OpenAI as the primary AI partner for the coding platform, supplanting Anthropic's previous role.
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Chinese Startup StepFun Launches AI Agent-Centric Smartphone STEPX Neo
Chinese startup StepFun has launched a new smartphone, the STEPX Neo, which is built around an AI agent integrated into its operating system. This device, priced at 3999 yuan, replaces traditional apps with an AI agent …
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Four chip platforms back StepFun's Step 5 Preview on launch day
Four domestic chip manufacturers, including Huawei Ascend, MetaX, Biren Technology, and Moore Threads, have announced Day-0 support for StepFun's Step 5 Preview. This coincides with the launch of Huawei's first 1,024-ca…
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StepFun releases open weights for 600B parameter Step 5 Preview model
Chinese AI lab StepFun has released the open weights for its Step 5 Preview model. This model is a sparse mixture-of-experts system with 600 billion parameters and supports a context window of up to 1 million tokens. Th…
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StepFun's Step 5 Preview model integrated into Tencent WorkBuddy
StepFun's new flagship model, Step 5 Preview, has been integrated into Tencent's WorkBuddy AI office assistant. This integration offers users exclusive free access to the model for two weeks, from October 12th to Octobe…
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StepFun offers free preview of Step 5 Preview model
StepFun is offering a free preview of its Step 5 Preview model through its Nous Portal this week. This initiative aims to broaden access, allowing more builders to directly evaluate the model's performance.
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AI developments: Automation feedback, typed AI funding, and model routers · 3 sources tracked
This cluster covers several distinct AI-related developments. One item discusses implementing visual feedback loops for screen-automation agents using Python and computer vision. Another highlights TypeSafe AI's $870 mi…
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Stepfun releases 1M-token context model at competitive price
Stepfun has released a new model, "Step 5 Preview," which boasts a 1 million token context window. This model is notable for combining a long context capability with a low cost, priced at $1 in and $2.7 out per 1 millio…
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StepFun's 1M-context Step 5 Preview model launches on OpenRouter
StepFun has released Step 5 Preview, a large mixture-of-experts model with a 1 million token context window, now available on OpenRouter. This model is designed for complex, multi-step tasks, particularly in software en…
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New AI Model StepFun Announced for Voice Agents
A new AI model named StepFun has been announced, featuring a five-stage retrieval pipeline designed for voice agents. This system, detailed in a Mastodon post, can process a large context of 500,000 documents down to 40…
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StepFun's 198B MoE model offers pro-tier performance at low cost
StepFun has released Step-3.7-Flash, a 198 billion parameter Mixture of Experts (MoE) model that performs inference using only 11 billion active parameters per token. This architecture allows for high throughput, reachi…
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StepFun releases 600B MoE model with 1M context window
StepFun has released its Step-5-Preview model, a Mixture-of-Experts (MoE) architecture with 600 billion total parameters and 27 billion active parameters. This model boasts a 1 million token context window and is design…
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US agencies warn of industrial-scale AI model distillation by Chinese firms
U.S. agencies including CISA, NSA, and FBI have issued an advisory detailing how six China-based companies allegedly engaged in industrial-scale knowledge distillation of U.S. frontier AI models. These companies, includ…
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US agencies recommend covert AI model degradation, sparking trust concerns
A joint advisory from the NSA, CISA, and FBI recommends that AI labs covertly degrade the performance of accounts suspected of model theft, without informing the user. The advisory names several labs, including Anthropi…
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US accuses Chinese AI firms of industrial-scale theft of AI models
US authorities, including the NSA, CISA, and FBI, have issued a joint advisory accusing several Chinese AI companies of engaging in "industrial-scale distillation activities" to copy American AI models. Companies like D…
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Airwallex raises $320M at $11B valuation for AI-driven autonomous finance
Airwallex has secured $320 million in Series H funding, boosting its valuation to $11 billion. The fintech company is pivoting towards "autonomous finance" and "agentic commerce," introducing AI-powered features like T:…
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Peking University and StepFun unveil TensorCast for faster LLM inference · 2 sources tracked
Researchers from Peking University and StepFun have developed TensorCast, a new programmable tensor management layer designed to optimize large language model infrastructure. This system aims to significantly reduce the…
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China's AI-Agent Phones Pass L3 National Grading, L4 Bottleneck Identified
China has initiated national grading tests for AI-powered mobile devices, with eleven devices, including nine smartphones from major manufacturers like Huawei and Xiaomi, passing the initial L3 level. While manufacturer…
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StepFun's STEPX Neo AI phone integrates deeply with Chinese super apps
StepFun has launched the STEPX Neo AI phone in China, featuring deep integrations with popular super apps such as Alipay, Meituan, and DiDi. This device can autonomously perform complex, multi-step tasks across these pl…
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StepFun launches STEPX Neo AI agent phone with deep app integration
StepFun has launched the STEPX Neo, an AI agent-native smartphone designed for autonomous task execution across multiple applications. The device integrates over ten major platforms, including Alipay, Meituan, DiDi, and…