Jev directory
Imajev 4B
- Reading time
- 3 min
- Published by
- Community
- Author
- Mohit Garg
- Last verified
- Oct 2026
Highlights
- Recommended default of the family: 83.9% on ImajevBench against the 9B's 82.1% at under half the size, and the only size trained on phase-3 hard data.
- #1 of 91 on JevBench v1.4.2.2 (67.4 composite) and #1 of 49 on Image JevBench v0.1.3 (76.39); #3 of 56 on DecisionBench at 79.65.
- Trained on 72k photo-vs-record and two-photo decisions; every answer carries a probability for unknown plus an abstained flag.
- At a 90% threshold it automates 58% of ImajevBench questions at 97.5% accuracy; at 99% it automates 40% at 100%.
- Apache-2.0 weights run under MLX on a Mac or PyTorch on one GPU; the card's sampled request answered in 1.15 s on a Mac Studio.
Watch out
Apache-2.0 vision-language adapter built on Qwen/Qwen3.5-4B. The leaderboard ranks are the card's own screenshots from late September 2026, and its demo set passes 130 of 145 combinations without the calibration file (118 with it); the card itself says to measure a few hundred of your own cases before choosing a threshold.
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Reactions & coverage
Posts, threads, and videos about this entry from around the web.
X: Standard One SH (StandardThinking)
LinkedIn: What multimodal decision models actually change, and what they do not.
LinkedInJevDirectory.org
Hacker News: Decision Index 0.2.1 scores open reproductions of Jev on a frozen suite.
jackbravo4 pointsDecision Index 0.2.1 – 70 open reproductions of TypeSafe Jev's Decision ModelRead the thread on Hacker NewsHacker News: Pointer to a DiffusionGemma plus vLLM tutorial for a Jev-shaped classifier.
1 pointHow to build a Jev-style classifier with DiffusionGemma and vLLMRead the thread on Hacker NewsFrom the Jev guides
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