Obituaries · Anthropic
claude-3-haiku-20240307, 2024–2026
Anthropic model switched off after 2 years and 1 month
Anthropic has confirmed the retirement of claude-3-haiku-20240307, effective April 20, 2026, aged 2 years and 1 month. It answered questions, wrote emails and was blamed for both. The death was announced 2 months in advance, on February 19, 2026, on a deprecations page that most of its users never opened. Code that still calls it will find out the hard way.
Its work passes to claude-haiku-4-5-20251001, which the family describes as 'recommended'.
| Model ID | claude-3-haiku-20240307 |
|---|---|
| Provider | Anthropic deprecations page |
| Born | March 7, 2024 |
| Announced | February 19, 2026 |
| Shut down | April 20, 2026 |
| Successor | claude-haiku-4-5-20251001 |
In lieu of flowers
Replace the string. Search your code for claude-3-haiku-20240307 and swap it for claude-haiku-4-5-20251001, 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.
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Technical notice, with a code scanner: claude-3-haiku-20240307 on Model Graveyard Check