Model FatigueLLMs under $1, measured — and who holds your data
Providers

Anthropic

Anthropic model retirements

Model retirements Anthropic has published since 2026, with the model id exactly as Anthropic writes it. Each date comes from Anthropic's own published pages.

Upcoming (1)

Model idShuts downDeprecatedReplacementSource
claude-sonnet-4-5-202509292026-11-302026-09-30claude-sonnet-5-5provider page

Already retired (7)

Model idShuts downDeprecatedReplacementSource
claude-opus-4-1-202508052026-08-052026-06-05claude-opus-4-8provider page
claude-opus-4-202505142026-06-152026-04-14claude-opus-4-8provider page
claude-sonnet-4-202505142026-06-152026-04-14claude-sonnet-5-5provider page
claude-3-haiku-202403072026-04-202026-02-19claude-haiku-4-5-20251001provider page
claude-3-5-haiku-202410222026-02-192025-12-19claude-haiku-4-5-20251001provider page
claude-3-7-sonnet-202502192026-02-192025-10-28claude-sonnet-5-5provider page
claude-3-opus-202402292026-01-05claude-opus-4-8provider page