What's the technology behind this. I'm working on something myself, using a distributed actor model (setup like a graph) to create a living reactive model.

The model is a multi-threaded Go script running on a 512-thread AMD EPYC server. It's a trend based model so it's just trying to figure out how best to measure and predict trend changes. Not day trading or HFT.

It conducts millions of simulations daily for each asset, then provides a snapshot of the top-performing results to GPT-4o for final selection.

I'm really pushing the limits of GPT-4o currently. I started testing with o1 just last week and it performs better. It's just so much more expensive.

What brokers allow you to short crypto?

If you're US based, there is no major exchange support. BITI ETF and SETH ETF for shorting BTC and ETH.

If you're non-US: Binance.

CME Group has ETH and BTC futures and you can short those easily as theres no notion of "borrowing shares" in the futures world to get short.