Public story · 2026-02-20 · source-backed
stepfun-ai/Step-3.5-Flash — Open-Source 196B MoE (1.4K stars)
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GitHub | 196B total / 11B active, Apache 2.0
StepFun's sparse MoE activates only 11B of 196B parameters per token, delivering 74.4% SWE-bench, 97.3% AIME 2025, and 100-300 tok/s throughput. Supports INT4 GGUF for local inference. Apache 2.0 licensed. One of the most capable fully open-source agentic models available. Trending on HN with 224 points.
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