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Ian Maurer's Blog

2025

2024

What is a Custom GPT?

January 8, 2024

Custom GPTS are a configurable, shareable chat experience available to ChatGPT plus subscribers. Custom GPTs were announced on November 6th, 2023 at their inaugural Dev Day event and the GPT Store was announced on January 10th, 2024.


2023

Using grammars to constrain llama.cpp output

September 6, 2023

Context-free grammars have increased the accuracy of my large language model-based biomedical data extraction pipeline. The llama.cpp project has recently added support for grammars to guide and constrain LLM output.

LLMs Just Don't Understand

July 14, 2023

It's difficult to describe the subtleties of LLMs and their capabilities at language manipulation and automation without resorting to anthropomorphism at times. So, I decided to manipulate some tokens using my word calculator to come up with some alternative terms.

The answer is the easy part

May 18, 2023

Med-PaLM 2 made news by scoring 86.5% on the MedQA dataset setting a new state-of-the-art. A great new tool for practitioners, but the truly difficult parts remain.