GigaChat 3.1 Ultra 702B Open Weights Released Under MIT License — Sber's Largest Model

r/LocalLLaMA / Hugging Face·medium signal

Sber (Russian bank's AI division) released GigaChat-3.1-Ultra-702B (36B active MoE) and GigaChat-3.1-Lightning-10B-A1.8B under MIT license with commercial-use permission. Ultra includes a full DPO stage trained in native FP8 — not post-hoc quantization. The 138-upvote, 109-comment thread (0.79 comment ratio) on r/LocalLLaMA shows high technical engagement, particularly around the model's multilingual capabilities and FP8 training approach.