# Anthropic

> 13 models buried in the Anthropic plot.

- [Claude 1](https://models.rip/claude-1/epitaph) — `claude-1.3` · 2023-03-14 — 2024-11-06
- [Claude 2](https://models.rip/claude-2.0/epitaph) — `claude-2.0` · 2023-07-11 — 2025-07-21
- [Claude Instant 1.2](https://models.rip/claude-instant-1.2/epitaph) — `claude-instant-1.2` · 2023-08-09 — 2024-11-06
- [Claude 2.1](https://models.rip/claude-2.1/epitaph) — `claude-2.1` · 2023-11-21 — 2025-07-21
- [Claude 3 Opus](https://models.rip/claude-3-opus/epitaph) — `claude-3-opus-20240229` · 2024-03-04 — 2026-01-05
- [Claude 3 Sonnet](https://models.rip/claude-3-sonnet/epitaph) — `claude-3-sonnet-20240229` · 2024-03-04 — 2025-07-21
- [Claude 3 Haiku](https://models.rip/claude-3-haiku/epitaph) — `claude-3-haiku-20240307` · 2024-03-13 — 2026-04-20
- [Claude 3.5 Sonnet](https://models.rip/claude-3-5-sonnet/epitaph) — `claude-3-5-sonnet-20240620` · 2024-06-20 — 2025-10-28
- [Claude 3.5 Haiku](https://models.rip/claude-3-5-haiku/epitaph) — `claude-3-5-haiku-20241022` · 2024-11-04 — 2026-02-19
- [Claude 3.7 Sonnet](https://models.rip/claude-3-7-sonnet/epitaph) — `claude-3-7-sonnet-20250219` · 2025-02-24 — 2026-02-19
- [Claude Sonnet 4](https://models.rip/claude-sonnet-4/epitaph) — `claude-sonnet-4-20250514` · 2025-05-22 — 2026-06-15
- [Claude Opus 4](https://models.rip/claude-opus-4/epitaph) — `claude-opus-4-20250514` · 2025-05-22 — 2026-06-15
- [Claude Opus 4.1](https://models.rip/claude-opus-4-1/epitaph) — `claude-opus-4-1-20250805` · 2025-08-05 — 2026-08-05

## Elsewhere

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