Step 3.5 Flash Just Dropped: China’s “Agent-First” Model Hits 350 Tokens/Second
StepFun’s Step 3.5 Flash delivers 350 tok/s with 196B MoE architecture, 74.4% on SWE-bench Verified, and Apache 2.0 license. Deep technical analysis of China’s fastest agentic coding model vs Gemini 3 Flash and DeepSeek R1.
