I just reviewed several free AI options for trading, and honestly, there are quite a few interesting alternatives if you don't want to spend money upfront.

TradingView is the first I would recommend if you're just starting out. It's not pure AI, but it has smart indicators and you can automate strategies with Pine Script. The best part is that the free version already comes with a lot of functionality, although the pro has more advanced tools.

Next is TrendSpider, which automatically identifies price patterns and trend lines. Technical analysis is almost done automatically, and it sends you alerts when it detects signals. The free version is a bit limited but useful for testing.

Tuner seemed interesting to me because it analyzes on-chain data and market psychology, which others don't do. It offers entry points based on AI, and the basic version is free.

If you're looking for automatic trading, CryptoHopper and 3Commas are the ones everyone uses. Both use AI to optimize strategies, support major exchanges, and have free packages, although with limitations on transactions and the number of bots.

The question is, what do you really need: automatic technical analysis, AI signals, or bots that trade for you? Because depending on that, you switch between one and the other. What kind of free AI trading are you looking for?