Anthropic — Claude Sonnet 4 and Claude Opus 4 retired 2026-06-15

Provider: Anthropic (Anthropic API)
Status: retired · Type: model
Shutdown: 2026-06-15
Successor: Claude Sonnet 4.6 / Claude Opus 4.8
Migration: Sonnet 4 -> Sonnet 4.6; Opus 4 -> Opus 4.8.
Source: https://platform.claude.com/docs/en/about-claude/model-deprecations · as_of 2026-06-17