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Open Weight

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News

StepFun Launches Step 5 Preview: 600B-Parameter MoE Built for Long Agent Tasks

StepFun shipped its flagship Step 5 Preview — 600B total parameters, 27B active, 1M-token context, aimed at coding, finance, and long-horizon agent tasks. The API is live on OpenRouter; open weights expected October 15.

Oct 11, 2026

News

Aleph Alpha Open-Sources Kolibri: 78B Parameters, Only 3.46B Active per Token

German AI company Aleph Alpha released the open-weight model Kolibri on October 3 — 78.1B total parameters with only 3.46B active per token, Apache 2.0 license, English-German bilingual, context up to 1M tokens, built for sovereign AI local deployment.

Oct 4, 2026