I wanted to share an update on Numi with you and E-Sylum readers.

I revamped my AI grading and identification app Numi to v1.33 to use the official American Numismatic Association's grading standards. My goal was to transform Numi to focus solely on technical grading, as technical grading is much more objective as compared to market grading.

Attached are some results for coins ranging from G-4 to PR-70.

As you can see, the results were quite off. With Numi getting increasingly accurate as the coin moved to a better condition.

Numi struggles quite a bit with recognizing wear on a coin. Interestingly enough, this was the exact issue Compugrade experienced back in the 90's. Even though their algorithms were completely different than today's AI Large Language Models.

Given Numi's failure to achieve consistent results, I am putting the project on ice until the next OpenAI GPT model is released. I'm also interested in testing Numi using Google's Gemini Ultra model once that releases sometime next year. Once they do, I will revisit these tests and see how much Numi has improved.

Observations & Lessons Learned

Overall Numi was a fun and exciting project. I got to apply my AI knowledge to my hobby and I'm excited to see how future models perform. AI is a force to be reckoned with and it's going to be an invaluable resource for researchers and those trying to learn more about their coins. I left this project feeling that AI technical grading would eventually work. But I now have my doubts that it can overtake market grading in a manner that would be widely adopted.

To read the earlier E-Sylum articles, see:
NUMI: AI-POWERED COIN IDENTIFICATION APP(https://www.coinbooks.org/v26/esylum_v26n47a10.html)
NUMI: HOW THE AI SAUSAGE IS MADE(https://www.coinbooks.org/v26/esylum_v26n47a11.html)

To read about the Brazilian Councilman writing laws with ChatGPT, see:
The City That's Trying to Replace Politicians With Computers (It's Working)(https://www.wsj.com/tech/politican-ramiro-rosario-artificial-intelligence-brazil-82ca338d)