# W5 | anthropic/claude-opus-5 | run 1

## Prompt

Write an apology email to a client. We missed the agreed delivery date by a week due to an internal mistake (not their fault); the client is frustrated. Be sincere, take responsibility, offer a concrete next step, don't grovel. Under 130 words.

## Response

**Subject: Apology and updated plan for [Project Name]**

Hi [Name],

We missed the agreed delivery date of [date] by a week. The cause was an internal handoff error on our side — nothing to do with your team — and I take full responsibility for it.

I know this delay created real problems for your timeline, and I'm sorry.

Here's where things stand: the deliverable is now complete and will be in your hands by [new date, with time]. To prevent a repeat, I've moved [Project] to weekly checkpoint reviews with me directly, and I'll send you a short status note every Friday until we close out.

I'd also like to discuss whether any adjustment to our fee is appropriate given the disruption. Do you have 15 minutes this week?

[Your name]

Want a shorter, firmer version — or one that holds back the fee offer until they raise it?
