# 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

Buried here: `claude-3-opus-20240229`

## Last words

It wrote more than it strictly needed to, and the surplus was usually the good part.

## The record

- Provider: Anthropic
- Model id: `claude-3-opus-20240229`
- Cause of death: Superseded
- Notice given: 2025-06-30
- Context window: 200,000 tokens
- Cost per Mtok: $15 in · $75 out
- Succeeded by: [Claude Opus 4](https://models.rip/claude-opus-4/epitaph) (this archive's reading of lineage, not the provider's migration guidance)

## Sources

- https://platform.claude.com/docs/en/about-claude/model-deprecations
- https://www.anthropic.com/news/claude-3-family
- https://www.anthropic.com/research/deprecation-commitments

## Elsewhere

- [Stand at this grave](https://models.rip/claude-3-opus)
- [The Anthropic plot](https://models.rip/anthropic)
- [The whole cemetery](https://models.rip/)