LangChain founder: Jev pioneers 'decision models'; open-source SemIf trails 74.7 vs 75.4
airesearch12 · x · 2026-09-22
LangChain founder Harrison Chase weighed in on Jev, calling it a new category of model — a "decision model" — and noting that open-source alternatives are already closing the gap.
Key points:
- On JevBench (by @airesearch12), Jev scores 75.4 while SemIf, an open-source alternative based on Qwen3.5, sits close behind at 74.7
- Several other open-source options exist beyond SemIf
- LangChain is hosting SemIf for free via LangSmith Gateway for the next week, letting developers try it hands-on
Related event: LangChain founder hails Jev and the rise of decision models(2 posts)→
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