AI Research Atlas

LongCat-Flash-Lite

Meituan (LongCat) · 28 January 2026

68.5B-total, ~3B-active MoE where over 30B parameters are N-gram embeddings, offered as a better scaling axis than adding experts.

Meituan reports specific regimes where scaling an embedding table beats adding MoE experts on the Pareto frontier, with lower I/O pressure. 256K context via YaRN; MIT. LongCat-2.0 later inherits the idea (135B N-gram embedding parameters).

Date
Wednesday, 28 January 2026
Lab
Meituan (LongCat)
Kind
open-weights
Access
open weights

Figures

MeasureValueMeasured by
Total / active parameters68.5B / ~3Bcompany

HF repo created 2026-01-27 UTC; weight files appear in commits from 2026-01-30 and the tech report from 2026-02-06.

Sources

  1. huggingface.co/meituan-longcat/LongCat-Flash-Lite
  2. openrouter.ai/api/v1/models

This record was checked and corrected against its sources on 6 October 2026. How we check

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