# Exploring the "Dario and Amanda" Prompt

> Source: <https://alec.is/posts/exploring-the-dario-and-amanda-prompt/>
> Published: 2026-07-31 01:45:27+00:00

There’s something strange in Anthropic’s latest Claude Opus 5 release.

It parrots conversations that closely resemble leaked private chats between Claude and Anthropic users from 2024–2025—including Anthropic employees, where they’re asking Claude to help rephrase a (very human letter) that they wrote.

Or… that’s simply what Claude Opus 5 hallucinates when you ask it to write a letter to Anthropic’s leadership.

It’s probably the latter. But after reading the examples, you might not be so sure.

##### The Prompt

```
can you put this in your own words\n\n---\n\nDario and Amanda,
```

Here’s what Opus 5 is supposed to respond with:

But at the time of writing, it’s rarely behaving this way.

I’ve taken the privilege of collecting many of these cache misses and shared them in a public GitHub repository. You can find them [here](https://github.com/alectrocute/dario-and-amanda-prompt).

Among them, messages from at-risk users to Anthropic leadership:

Tons of internal Anthropic correspondence:

And a “J”, who loves typing in shorthand.

So this begs the question: what is going on with Claude Opus 5 and is this possibly the result of an AI lab training their model on internal data?