# Claude 3 Opus

> The first model from anyone that people openly preferred to GPT-4, and for most of 2024 the most expensive thing you could call from a terminal. It was retired with an unusual undertaking attached: Anthropic committed to keeping its weights, which is not the same as keeping the model running, but is more than anyone had promised before.

2024-03-04 — 2026-01-05 · lived 1 year, 10 months

This URL is the guided walk — the 3D cemetery, standing at this grave. The written record is at [Claude 3 Opus's epitaph](https://models.rip/claude-3-opus/epitaph).

## Elsewhere

- [The whole cemetery](https://models.rip/)
- [The dataset](https://models.rip/graveyard.json)