[bcardarella]

I tried to do this a few weeks ago, I tried to build a NIF around an existing C lib. I was using Claude Opus and burned over $300 (I didn't have Pro) on tokens with no usable results.

[cpursley]

Get Pro, 4 is quite good at Elixir now but you have to stay on it. 3.5 was not, so I imagine next version of Claude will be able to handle the more esoteric things like NIFs, etc.

[bcardarella]

The issue in this case was Opus was pretty crap at C. It kept introducing segfaults.

[ipaddr]

Get Pro 5.. it will work I promise