# Lambert defends the AAv5 index and open-model benchmarking

> Original title: I feel a need to defend the AAv5 index and open models at the same time. Benchmarking is messier, more opinionated, and trickier than mos...

- Source: Nathan Lambert
- Published: 2026-10-28T10:21:28.000Z
- Bad Influence: https://badinfluence.news/items/dkr57rt6n148l0ej3yeuq4s67
- Original: https://x.com/natolambert/status/2115388473507184867

## Summary

Nathan Lambert says he feels a need to defend the AAv5 index and open models at the same time. He argues that benchmarking is messier, more opinionated, and trickier than most people give credit to.

## Post

I feel a need to defend the AAv5 index and open models at the same time. Benchmarking is messier, more opinionated, and trickier than most people give credit to.