{"slug": "open-takes-on-jev-semif-and-laya", "title": "Open Takes on Jev: SemIf and Laya", "summary": "OpenJev has been renamed SemIf, an independent research project that provides the same API as TypeSafe's Jev but may use a completely different underlying architecture, since TypeSafe never disclosed Jev's own model or training. SemIf uses Qwen and MiniCPM5 as its core models and, instead of an autoregressive decoder, performs one forward pass and reads probabilities over filtered logits. A separate project, Laya, claims to outperform Jev by a tiny margin with a 421M-parameter model that evaluates typed questions (choice, score, noul) over any state, text, email, ticket, or JSON document in a single forward pass.", "body_md": "OpenJev has been renamed [SemIf](https://github.com/TheoLeeCJ/SemIf).\n\nIt’s wise to separate it from Jev’s marketing. It’s an independent research project that just provides the same API. The underlying architecture might be completely different, since TypeSafe never disclosed Jev’s own model or training.\n\nSemIf uses Qwen and MiniCPM5 as its core models. Instead of an autoregressive decoder, it does one forward pass and reads probabilities over filtered logits.\n\nAnother project, [Laya](https://github.com/NandhaKishorM/laya), is also worth a look. It claims to outperform [Jev](https://typesafe.ai) by a tiny margin. The model is small, 421M params. Laya evaluates typed questions (choice, score, noul) over any state, text, email, ticket, or a JSON document, in a single forward pass too.", "url": "https://wpnews.pro/news/open-takes-on-jev-semif-and-laya", "canonical_source": "https://julin.ai/2026/09/20/semif-open-jev/", "published_at": "2026-09-19 12:00:00+00:00", "updated_at": "2026-09-20 10:25:13.471128+00:00", "lang": "en", "topics": ["ai-research", "large-language-models", "ai-tools"], "entities": ["OpenJev", "SemIf", "Jev", "TypeSafe", "Laya", "Qwen", "MiniCPM5"], "alternates": {"html": "https://wpnews.pro/news/open-takes-on-jev-semif-and-laya", "markdown": "https://wpnews.pro/news/open-takes-on-jev-semif-and-laya.md", "text": "https://wpnews.pro/news/open-takes-on-jev-semif-and-laya.txt", "jsonld": "https://wpnews.pro/news/open-takes-on-jev-semif-and-laya.jsonld"}}