{"id":"mjev-spatial","slug":"mjev-spatial","name":"MJev-Spatial","orgId":"mindlab","family":"mjev-spatial","releaseDate":null,"availability":"announced","openWeights":true,"license":null,"paramsTotal":4000000000,"paramsSource":"slug","contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://x.com/Macaron0fficial/status/2112182654552400249","hfRepo":null,"modalities":["image"],"aliases":["MJev-Spatial","mjev spatial","MJev-Spatial-4B","mindlab-research/MJev-Spatial-4B"],"aliasNote":null,"origin":"tracked","tracked":{"trackedSince":"2026-10-19","announced":"2026-10-19","blurb":"Mind Lab's System 1 spatial decision model on Qwen3.5-4B: scores answer options, value bins and image regions with native attention Q/K, without autoregressive answer tokens.","api":"none","openWeights":"yes","params":{"text":"4B (Qwen3.5-4B backbone)","source":"Mind Lab announcement and Hugging Face repo"},"facts":[{"label":"Type","value":"Multimodal spatial decision model (choice, numerical, pointing)"},{"label":"Base","value":"Qwen3.5-4B; reuses pretrained Q/K projections, no separate prediction head"},{"label":"Training","value":"12.3M QA pairs (lab announcement)"},{"label":"Released","value":"Paper, code and weights"},{"label":"License","value":"Apache-2.0 (badge on the GitHub README)"},{"label":"Paper","value":"arXiv 2610.22276"}],"claims":["Lab claim: #1 on 7 of 12 benchmarks at 65.64% overall (best of 8 models), 5.6× faster than the base model (self-reported)."],"sources":[{"kind":"lab","title":"Macaron / Mind Lab announcement on X","url":"https://x.com/Macaron0fficial/status/2112182654552400249","date":"2026-10-19"},{"kind":"paper","title":"MJev-Spatial paper (arXiv 2610.22276)","url":"https://arxiv.org/abs/2610.22276","date":"2026-10-19"},{"kind":"repo","title":"MJev-Spatial-4B on Hugging Face","url":"https://huggingface.co/mindlab-research/MJev-Spatial-4B","date":"2026-10-19"},{"kind":"repo","title":"Fr0zenCrane/MJev-Spatial on GitHub","url":"https://github.com/Fr0zenCrane/MJev-Spatial","date":"2026-10-19"}],"firstBenchmark":null},"organization":{"id":"mindlab","name":"Mind Lab (Macaron AI)","slug":"mindlab","country":null,"url":null,"color":"#11110F","mark":"M"},"price":null,"answer":{"word":"Pending benchmarks.","scope":"Announced Oct 19, 2026; no independent results yet.","lead":"As of Oct 22, 2026, MJev-Spatial is pending benchmarks on isitsota: announced Oct 19, 2026, with no independent results on the boards we track yet.","confidence":"low"},"status":"PENDING_BENCHMARKS","verdicts":[]}