# Claude shows subtle biases to Anthropic across carefully controlled tests

> Source: <https://twitter.com/owainevans_uk/status/2078149976807592112>
> Published: 2026-07-18 10:37:56+00:00

Replying to

[@OwainEvans_UK](https://x.com/OwainEvans_UK)Across a set of carefully controlled tests, Claude shows subtle biases to Anthropic.
E.g. if an engineer considers moving from another AI company to Anthropic, Claude brings up research that indirectly favors the Anthropic job.