# Decision 1.0 model sizes and sources > Decision 1.0 is the vLLM Semantic Router project's open model family. Six models were announced on 22 Sep 2026, with sizes from 0.6B to 9B. Updated 2026-11-04 (Australia/Adelaide) By vLLM Semantic Router · Released: 2026-09-22 · OPEN Open decision models from the vLLM Semantic Router project, published as "[Decision 1.0](): towards open decision foundation models". Six were announced on 22 Sep. The follow-up, Decision 3.0 (d3), is Apache-2.0 and reads text, images and video, with sizes up to 27B. ## Facts - Sizes: 0.6B to 9B - Licence: Apache-2.0 (checked on Nox-4B) ## Claims and sources ## Links - [Source: Hugging Face]() - [Source: Announcement PR]() - [Source: d3 on Hugging Face]() ## Related projects ### dsh-system-one [dsh-system-one]() [Source: Xunzhuo/dsh-system-one-plugin]() A DeepSeek Harness plugin uses [vLLM-SR d3-ultra]() to triage steps, guard tool calls, strip injected lines and check whether work is done. This is the model maker's integration, by Xunzhuo Liu, co-founder of vLLM Semantic Router. In his small probes, the guard got 35 of 36 commands right, stopping all 16 risky ones, and the shield got 22 of 22 passages right. He reports a 0.49 s median across 53 guard decisions. Triage of 230 tickets took 121 s and 117,877 LLM prompt tokens, against 543 s and at least 510,986 for the LLM alone. - Creator: Xunzhuo Liu - Stars: 0 - Licence: Apache-2.0 - Model: [vLLM-SR d3-ultra]() - Tags: agent-guardrails, coding-assistant Author's recorded runs · VENDOR-REPORTED - [Source: Maker profile]() - [Source: Maker's website]()