This is based on users choosing the better from 2 models at a time, and calculating an ELO rating from who-beats-who.
BYOT - bring your own tests style.
Gives a better picture of real-world performance and more robust against contamination.
They collected over 6000 and 1500 votes for Mixtral-8x7B and Gemini Pro.
While ELO ratings are widely used to rank performance in Chess or among sports teams, here's a disclaimer by the makers of the leaderboard:
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> Please note Arena is a "live eval" and pretty much a sampling process to estimate models capability.
> That's why we show the confidence intervals through bootstrapping. Statistically, these models (e.g., GPT-3.5, Mixtral, Gemini Pro) are very close and only looking at their ranking can be misleading.
https://twitter.com/lmsysorg/status/1735729398672716114
https://twitter.com/lmsysorg/status/1735751052287226059
