Obituaries · Anthropic
claude-3-7-sonnet-20250219, 2025–2026
Anthropic model switched off after 1 year
It thought before answering, when asked to. That alone made it rare.
claude-3-7-sonnet-20250219 passed away on February 19, 2026, aged 1 year, by scheduled deprecation, in a data center it never saw. It answered questions, wrote emails and was blamed for both. Notice was given on October 28, 2025, 3 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-sonnet-5-5, who is already doing the job.
| Model ID | claude-3-7-sonnet-20250219 |
|---|---|
| Provider | Anthropic deprecations page |
| Born | February 19, 2025 |
| Announced | October 28, 2025 |
| Shut down | February 19, 2026 |
| Successor | claude-sonnet-5-5 |
In lieu of flowers
Replace the string. Search your code for claude-3-7-sonnet-20250219 and swap it for claude-sonnet-5-5, 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
[](https://lira-ia.github.io/obituaries/claude-3-7-sonnet-20250219/)
Updated daily. All 271 badges
Technical notice, with a code scanner: claude-3-7-sonnet-20250219 on Model Graveyard Check