LongCat
Meituan's open-weight LongCat model line.
LongCat is the model line published by the Chinese platform company Meituan, built around Mixture-of-Experts architectures and released with open weights under the MIT licence. It began with LongCat-Flash, a 560 billion parameter agentic model, and has since added variants for formal mathematical reasoning in Lean 4 and for lighter agent and coding work, followed by LongCat 2.0.
longcat.chatModels from LongCat
No LongCat models are currently routed through the Opper gateway. They may return — contact us if you need one.
Release timeline
Every dated LongCat release, newest first — 0 of 2 run on the Opper gateway today. Releases without a published date aren't listed. See the AI model release tracker.
2 releases in the last 12 months152 days median gap152–152 days range