Claude Opus 4

Anthropic | Artificial Intelligence | Claude | Tech Deathwatch

Claude Opus 4 and Sonnet 4 Retirement Deadline Hits This Weekend
ByJustin Ray June 13, 2026June 13, 2026

Anthropic will retire the original Claude Opus 4 and Claude Sonnet 4 models from the API on June 15, 2026 — just two days from now. The company first announced the deprecations on April 14, 2026. Both models have been in deprecated status since then, and API calls to the old identifiers will stop working…

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Anthropic | Claude | Tech Deathwatch

Anthropic Sets Retirement Dates for Multiple Claude Models
ByJustin Ray June 13, 2026June 13, 2026

Anthropic has officially confirmed deprecation timelines for several Claude models, with two major deadlines looming in the coming weeks. According to the company’s Model Deprecations page and recent release notes, developers using older Claude 4-series models will need to migrate before the models are retired from the API. Key Dates Additional Changes Starting with newer…

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