# Dwarkesh Patel builds a Blood on the Clocktower benchmark testing AI deception

> Original title: The benchmark where AIs have to lie to win

- Source: Dwarkesh Podcast
- Published: 2026-11-05T21:05:50.000Z
- Bad Influence: https://badinfluence.news/items/cl9ozcjcoj16x3nqgws0d4hyg
- Original: https://www.dwarkesh.com/p/clocktower

## Summary

Dwarkesh Patel says he built a benchmark around the social deception game Blood on the Clocktower, spending about $20,000 in API credits to run AI models against each other. He reports that GPT-6 Astra beats Claude Opus 4.6 by about 430 Elo points, winning roughly 92% of their games. He also says OpenAI's models have improved more at playing the good team, being more skeptical of evidence than Anthropic's models.