6B Leanstral 1.5 with light K3 orchestration beats GPT-6 Astra on ArXivLean benchmark
AlbertQJiang · x · 2026-09-11
AlbertQJiang announces the team will soon swap out K3 for a different model. Leanstral 1.5 — a 6B model — with a small amount of K3 orchestration beat GPT-6 Astra on the ArXivLean benchmark. He notes the token counts on the leaderboard appear to be counted erroneously ('a 6B model does yap'), and credits the result to intern Matéo Pirio Rossignol mentored by @romansoletskyi.
Related event: 6B Open-Source Leanstral 1.5 Beats GPT-6 Astra on ArXivLean(4 posts)→
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