StepFun

@StepFun_ai

Scale-up possibilities for everyone. OpenRouter: openrouter.ai/stepfun HuggingFace: huggingface.co/stepfun-ai

stepfun.com

Joined February 2025

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StepFun
@StepFun_ai
May 29
⚡️ Step 3.7 Flash is here: The new frontier is agent efficiency. #1 ClawEval-1.1 (67.1), #1 SimpleVQA Search (79.2), #2 SWE-PRO (56.3), 95.3 on V* Python. Open weights under Apache 2.0. Built for agentic, coding, search, and multimodal workflows — balancing speed, cost, and
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StepFun
@StepFun_ai
1h
StepFun and ACE Studio present StepAudio 3 Music, StepFun’s first music generation foundation model — built to turn a prompt and lyrics into a complete song. Describe the sound you want: • Genre, mood and vocal character • Instruments, key and BPM • Song structure and
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StepFun
@StepFun_ai
Sep 15
Introducing StepAudio 3, our new family of 5 audio models for real-time voice, speech recognition, speech generation, audio generation and music. Realtime ranks #1 on Artificial Analysis for both Conversational Dynamics (98.9%) and Speech Reasoning (99.7%). ASR reaches 1.7% WER,
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StepFun
@StepFun_ai
Sep 14
We’re bringing StepAudio 3 to San Francisco this Wednesday. Live demos, an open AMA with the StepAudio team, and a panel with leaders from PLAUD.AI, Cresta, Coval, SGLang-Omni & StepFun on what works, what still breaks in production, and where real-time AI
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StepFun
@StepFun_ai
Sep 14
That’s a wrap on AGNTCon + MCPCon Japan. Two days of meeting AI builders, exchanging ideas on agent infrastructure, and seeing what people are building across the ecosystem. We are especially excited to see several great agent infrastructure projects joining the StepFun Startup
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