Modelpeers

Claude Sonnet 4 and Opus 4

2 models from Anthropic

Retiring

Claude Sonnet 4 and Claude Opus 4 deprecated

Anthropic announced that claude-sonnet-4-20250514 and claude-opus-4-20250514 would retire on the Claude API on June 15, 2026.

Who is affected:
Apps calling claude-sonnet-4-20250514 or claude-opus-4-20250514.
Action needed:
Migrate to Claude Sonnet 4.6 and Claude Opus 4.8.

Source

"with retirement on the Claude API scheduled for June 15, 2026."

Claude Platform release notes (API)

Published

Open the sourceplatform.claude.com

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