FreeLLMLongCat-2.5: 1780B parameters, free to download
LongCat-2.5 by Meituan-longcat came out on 4 Nov 2026, with open weights on Hugging Face. At 4-bit it needs about 1081 GB of memory.
What the video says
A new free AI model with 1780 billion parameters.
It comes from Meituan-longcat, with open weights.
Can your PC run it? At 4-bit it needs about 1081 gigabytes. No single home machine on our list can hold it.
It reads up to 512 thousand tokens at once.
Compare it with every free model.
Find it all on FreeLLMArena.
The data
- Compare it with every free model: https://freellmarena.com
Hardware
Memory at 4-bit with an 8K context, from our simulator. To check your own setup, use the Run at home simulator.
- RTX 4090 (24 GB): too small to hold it · Amazon ↗
- RTX 5090 (32 GB): too small to hold it · Amazon ↗
- RTX PRO 6000 Blackwell (96 GB): too small to hold it · Amazon ↗
- Mac Studio M3 Ultra 512 GB: too small to hold it · Amazon ↗
- LongCat-2.5: about 1081 GB at 4-bit · no single home machine on our list holds it
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Every number in this post comes from the FreeLLMArena data on 9 Nov 2026: Arena votes, Hugging Face sizes and our speed simulator. Download the video and its subtitles.
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