Some other known distributional biases include self-preference bias (gpt-4o prefers gpt-4o generations over claude generations for eg) and structured output/JSON-mode bias [1]. Interestingly, some models have a more positive/negative-skew than others as well. This library [2] also provides some methods for calibrating/stabilizing them.

[1]: https://verdict.haizelabs.com/docs/cookbook/distributional-b... [2]: https://github.com/haizelabs/verdict