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vLLM Semantic Router Team Shares System Duoโs Fast Decisions and Deep Reasoning
- Who
- vLLM Semantic Router team
- What
- introduces System Duo, a router that uses fast decision models for quick calls and routes deep reasoning to other models when needed
What happened
One router, two minds ๐ง โก Huge work from @XunzhuoLiu and the vLLM Semantic Router team on System Duo โ fast decision models handle the blink-of-an-eye calls (triage, guard, verify, check), while the router sends deep reasoning to the right model only when it matters. All
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See the full storyvLLM Semantic Router Team Introduces System DuoOne router, two minds ๐ง โก
Huge work from @XunzhuoLiu and the vLLM Semantic Router team on System Duo โ fast decision models handle the blink-of-an-eye calls (triage, guard, verify, check), while the router sends deep reasoning to the right model only when it matters.
๐๐๐ค๐ ๐ฒ๐จ๐ฎ๐ซ ๐๐ ๐๐ง๐ญ ๐ญ๐ก๐ข๐ง๐ค ๐๐๐ฌ๐ญ ๐๐ง๐ ๐ฌ๐ฅ๐จ๐ฐ. System One decides in a blink. System Two reasons in depth. ๐๐ง๐ ๐ซ๐จ๐ฎ๐ญ๐๐ซ. ๐๐ฐ๐จ ๐ฆ๐ข๐ง๐๐ฌ. ๐๐ง๐ญ๐ซ๐จ๐๐ฎ๐๐ข๐ง๐ ๐๐ฒ๐ฌ๐ญ๐๐ฆ ๐๐ฎ๐จ โ https://t.co/zSPzFm6PLA #Jev #SystemOne #SystemTwo #OpenSource https://t.co/zt7yloDKj2View the quoted post on X
The story so far
The vLLM Semantic Router team introduced System Duo, a router that uses fast decision models for triage, guard, verification, and checks, then routes requests needing deeper reasoning to an appropriate model. The team described this as a way to reserve deep reasoning for cases where it matters.
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