I asked several AI how to best invest in the snp500 sans Tesla. Here's what they gave me (all used XMAG (EX-magnificent 7) + other ETFs

Credit to Claude 3.7 thinking for coming up with the initial best solution, using XMAG. On the first try, all the other AI came up with solutions using 10-12 stocks. I then asked all the other AI's to come up with the simplest solution using XMAG.

Gemini Thinking

> Defiance Large Cap ex-Mag 7 ETF (XMAG): 78%
>
> Technology Select Sector SPDR Fund (XLK): 12%
>
> Communication Services Select Sector SPDR Fund (XLC): 10%

Perplexity+Claude 3.7 thinking

> Component Stocks Covered Tesla Exposure

> XMAG 493 ❌

> XLK 3 Mag 7 ❌

> XLC 2 Mag 7 ❌

> SPXT AMZN + others ❌

> Cost Efficiency: Total expense ratio = 0.35% (XMAG) + 0.10% (XLK) + 0.10% (XLC) + 0.45% (SPXT) = 1.00%, cheaper than the prior CHGX-based solution.

Deepseek R1 + Search

> Final Portfolio Allocation
>
> ETF Purpose Weight
>
> XMAG S&P 500 base (ex-Magnificent 7) 80%
>
> XLK Adds Apple, Microsoft, Nvidia 12%
>
> XLC Adds Alphabet, Meta 5%
>
> IBUY Adds Amazon (retail exposure, no Tesla) 3%
>

o1

> ETF Role Sample Weight
>
> XMAG “S&P 500 minus the Magnificent 7” 75%
>
> XLK Reintroduce Apple, Microsoft, NVIDIA (Tech exposure) 15%
>
> XLC Reintroduce Alphabet (Google) & Meta (Comm Services) 5%
>
> FDN Reintroduce Amazon (Internet leaders) 5%

All solutions also have XLK, and XLC. There is probably further optimization in asking again with XMAG, XLK, and XLC with the starting point, and then asking it to optimize for the last stock. It seems all that's left is needing to reintroduce Amazon, so just buying that directly could work.