Obituaries · Anthropic
claude-opus-4-20250514, 2025–2026
Retired by Anthropic
Briefly the best coder in the world, according to the people who made it and some of the people who did not.
claude-opus-4-20250514, an Anthropic model that answered questions, wrote emails and was blamed for both, was switched off on June 15, 2026, aged 1 year and 1 month. Notice was given on April 14, 2026, 2 months ahead, in the usual way: a table row on a documentation page. Requests addressed to it are expected to come back unanswered.
It is survived by claude-opus-4-8, who is already doing the job.
Last seen alive
In a scan of the 60 most-starred LLM repositories on GitHub (November 5, 2026), this code still names it:
- browser-use/browser-use (120,083 stars) ·
.github/workflows/claude.yml
| Model ID | claude-opus-4-20250514 |
|---|---|
| Provider | Anthropic deprecations page |
| Born | May 14, 2025 |
| Announced | April 14, 2026 |
| Shut down | June 15, 2026 |
| Successor | claude-opus-4-8 |
In lieu of flowers
Replace the string. Search your code for claude-opus-4-20250514 and swap it for claude-opus-4-8, or paste a repo into Model Graveyard Check to find every dead model at once.
Want to say something to it? Leave a letter on the farewell wall.
Badge for your README
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Technical notice, with a code scanner: claude-opus-4-20250514 on Model Graveyard Check