Model routing with decision models
Choosing which model, tier or reasoning effort should serve each request. A typed Choice over candidate models replaces a hand-written router or an LLM call that decides where to send work.
197 public projects · page 7 of 7
OpenAI/Anthropic-compatible Go gateway where Jev or Laya rates topic, complexity, risk and privacy to pick the cheapest adequate LLM.
BenchmarkbetaGoJev as an LLM router on RouterArena and LLMRouterBench: the router beat the best single model, but a no-Jev ablation matched it.
BenchmarkresearchPythonBenchmark of LLM-native structured output (Qwen on Cerebras) versus Jev on seven application tasks: errors, latency, tokens and cost.
BenchmarkresearchProject premised on offloading cheap routing decisions from an LLM to a decision model while the LLM writes, tests and revises.
ProjectHosted checker where Jev reads a software idea and says whether plain code, Jev or a reasoning LLM fits it best.
ServiceproductionSmall demo app combining Jev with a Groq-hosted model for request routing and insights.
AppprototypevLLM Semantic Router's Apache-2.0 decision models (0.6B to 27B) answering up to 64 typed questions per input in one forward pass.
ModelbetaPythonInception's decision model on OpenRouter, with a free route, cited by Inception at up to 14 decisions per second.
ModelClassmethod DevelopersIO independent test of Jev for LLM model routing, reporting 40 successful calls and 10 of 10 correct classifications.
ArticleresearchLangChain blog guide on wiring Jev into an agent harness as a dangerous-action classifier and model router.
ArticlediscussionVercel's decision guide on when to use a System One model like Jev versus a frontier model like GPT-6 Astra.
ArticlediscussionJames Cruce's write-up on choosing local LAYA over hosted Jev: the 421M open model beat a home-made router on a frozen replay.
ArticlediscussionOpenRouter cookbook: Jev checks a cheap model's draft against grounding constraints before accepting it or escalating to a stronger model.
ArticleChinese-language X post reading LangChain's Jev adoption as evidence that decision models fit fixed harness roles like routing.
DiscussiondiscussionX demo by Ephraim Duncan where Jev decides which model should serve a request before it is forwarded.
DiscussiondiscussionX demo of a CLI where you give a task and your subscription list, and Jev picks which model or agent should handle it.
DiscussiondiscussionReddit thread in r/PiCodingAgent on using Jev as a tool-use safety layer and a prompt-complexity model router for Pi.
Discussiondiscussion