All shutdown dates · Claude (Anthropic)
ANTHROPIC · MODEL
claude-3-sonnet-20240229 was shut down on 21 July 2025
SHUT DOWN21 July 2025
SINCE453 days ago
REPLACE WITHclaude-sonnet-5-5
Announced in: 2025-01-21: Claude 2, Claude 2.1, and Claude Sonnet 3 models .
Anthropic lists 21 July 2025 as the date it shut down for claude-3-sonnet-20240229, with claude-sonnet-5-5 as the recommended replacement. Source: Anthropic's official deprecations page, checked 17 October 2026. Read the official page.
Checked against the official page on 17 October 2026 at 06:08 UTC
Announced in the same notice
| Shuts down | When | Model | Replace with | Source |
|---|---|---|---|---|
| 21 July 2025 | 453 days ago | claude-2.0 | claude-opus-4-8 | Official |
| 21 July 2025 | 453 days ago | claude-2.1 | claude-opus-4-8 | Official |