Open source alternatives to Jev

Peter Steinberger 🦞

@steipete

"Today, we’re releasing two Cloudflare-trained decision models, Clef and Clef-flash" blog.cloudflare.com/clef-decision-… Never seen an idea spreading so fast.

Victor M

@victormustar

Alert: Cloudflare just dropped a Jev alternative on Hugging Face 🚨 (Apache 2.0) huggingface.co/Cloudflare/clef

laxman

@llmluthor

Releasing Your Own Jev Post-train a 4B/8B/27B judge on your agent's traces. It beats Jev. 79.7% agreement with human labels vs Jev's 66.3% Beats DeepSeek-V4.1-Flash (763B) by 14 points 0.13s per step on a single GPU Completely open source: recipe, data, training, evals

Unsloth AI

@UnslothAI

You can now train your own Decision model like Jev locally! We increased Qwen3.5 0.8B’s aggregate accuracy from 20.7% to 74.3% across 3 decision benchmarks - on just 4GB VRAM. Turn any LLM like Qwen3.8, Gemma 4 into decision models with our open-source Unsloth repo. We fine-tuned with a Clef head using Unsloth and LoRA (r=64) for one epoch, increasing downstream accuracy from 30–37% to 78%. GitHub: https://github.com/unslothai/unsloth Guide and Notebooks: https://unsloth.ai/docs/basics/train-your-own-decision-model-with-unsloth

Liquid AI

@liquidai

d1-3B ranks first among models under 10B on the Decision Index v0.2.1, a benchmark for structured decision-making. Built from LFM2.5-VL-3B, it makes decisions from text and images in one pass. Use it for reranking, agent guardrails, and visual inspection. 2/

ollama

@ollama

.@Cloudflare's decision models are available on Ollama! Decision models allow you to classify an image, label a bug report or route a support ticket to the right team. Clef (27B): ollama pull clef Clef Flash (9B): ollama pull clef-flash

Perplexity Developers

@perplexitydevs

pplx-decider-v1.1-27b, our updated open weights multimodal decision model, is now available. It scores the highest on the new @huggingface Decision Index 0.3 benchmark. pplx-decider-v1.1-27b costs half as much as v1, at $0.02 per million input tokens. huggingface.co/spaces/multimo…

apolinario (poli)

@multimodalart

the jev Decision Index v0.3 is here 🎯 featuring a way stronger set of benchmarks, now with a strong private half 🔒 so the ranking tracks skills beyond benchmarks and, as promised, vision 👁️ huggingface.co/spaces/multimo…

Rishi

@RishiUvaach

Found an interesting open-source project: Bud Decision Studio. Think of it as #LMStudio for decision models. Run #Jev -like System One models locally, experiment with them, compare models, evaluate decisions, and expose them through an API. Repo : github.com/BudEcosystem/B…

James Briggs

@jamescalam

I wanted to understand @typesafeai's Jev and where open source scores against it The popular OpenJev's like Von were good but the tiny GLiNER models (some only 74M params) performed phenomenally — even beating Jev at Doom Full breakdown...

Marcel

@marcthecreatorr

Jev now has an open competitor from an actual lab Maincode just released Matilda Jev: a 26B decision model trained on their own infra in Australia. it doesn’t generate text. give it a decision and you get probabilities for every option in one pass. they claim it beats the original Jev on 27/43 benchmarks and the whole thing is open source under Apache 2.0. Open decision models just keep leveling up.

Afiz ⚡️

@itsafiz

Meet Kev - open source version of Jev Everyone is talking about Jev right now But it is a proprietary model and you dont' know what goes behind the scences Kev built on Qwen3.5 based on Jev's architecture. You can use pretrained weights or train your own Open source and 100% local.

Pandaily

@thePandaily

Shanghai AI Lab's Intern-Decision comes in 0.8B, 2B and 4B sizes and returns choices, scores and yes/no answers with probabilities; MetaX shipped Day-0 support. x.com/i/article/2107…