This is my summary of the posts so far:

What AI websites are good for use with investing in stocks?

The Mechanical Investing board on shrewdm is by far the best website since it involves systematic testing of stock investing concepts.

Be skeptical of claims. There are aggregator sites that examine claims:
https://www.cxoadvisory.com/
https://abnormalreturns.com/

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I asked Google search this question, and got this list: TrendSpider, Trade Ideas, Tickeron, LevelFields, StockGeist, Magnifi, Incite AI. None of these sound familiar.

I put the question into AI arena and received the following 2 answers:
gemini-2.5-pro: TrendSpider, Composer, Trade Ideas, Seeking Alpha's Quant Ratings.
minimax-m1: Trade Ideas, EquBot, Kavout, AlphaSense, SentimentInvestor, MarketSmith, Numerai, Palantir Gotham.

These 3 AI-generated lists are all different, with not much overlap. I've heard of Composer, but don't use it. I don't use any AI website for stock investing. Portfolio123 would probably be my first pick.
https://community.portfolio123.com/t/ai-factor-des...

Mechanical Investing FAQ

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