Keep Deterministic Work Deterministic

6 hours ago

The article discusses the challenges of reliability in LLM-based systems, using a blackjack simulation as an example.
Early runs of the simulation had a 37% pass rate, with errors compounding due to miscounts and rule violations.
The 'March of Nines' concept is introduced, illustrating the increasing effort required to improve system reliability from 90% to 99% and beyond.
An exercise demonstrates cascading failures in LLMs, showing how small errors in early steps can lead to significant deviations in the final result.
The article highlights the importance of making deterministic work deterministic, using code instead of LLMs for tasks like arithmetic and rule validation.
Iterative improvements to the blackjack pipeline, including restructuring data, using chain of thought, and replacing LLM validators with code, increased the pass rate to 94%.
The key takeaway is to identify and remove deterministic tasks from LLM pipelines, using code for such tasks to achieve higher reliability.

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