# Migrating off claude-sonnet-4-20250514

**Anthropic** retires **claude-sonnet-4-20250514** on **2026-06-15**.
Documented replacement: **claude-sonnet-4-6**.

Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations
Source check date not recorded.
Calendar as of 2026-09-15 UTC.

| Model | Provider | Retires | Replacement |
|---|---|---|---|
| claude-sonnet-4-20250514 | Anthropic | 2026-06-15 | claude-sonnet-4-6 |

Also retiring on 2026-06-15:
- claude-opus-4-20250514 (Anthropic) → claude-opus-4-8

Source: https://llmlatency.dev/migrate/anthropic-claude-sonnet-4-20250514