Anthropic (Claude API) deprecations & model shutdown dates

1 upcoming and 12 past retirements from Anthropic (Claude API), taken from the official deprecation page.

Upcoming

Model / API	Shutdown	Replacement
`claude-mythos-preview`	—	—

Already shut down

Model / API	Shutdown	Replacement
`claude-opus-4-1-20250805`	2026-08-05	`claude-opus-4-8`
`claude-opus-4-20250514`	2026-06-15	`claude-opus-4-8`
`claude-sonnet-4-20250514`	2026-06-15	`claude-sonnet-4-6`
`claude-3-haiku-20240307`	2026-04-20	`claude-haiku-4-5-20251001`
`claude-3-5-haiku-20241022`	2026-02-19	`claude-haiku-4-5-20251001`
`claude-3-7-sonnet-20250219`	2026-02-19	`claude-sonnet-4-6`
`claude-3-opus-20240229`	2026-01-05	`claude-opus-4-8`
`claude-3-5-sonnet-20240620`	2025-10-28	`claude-sonnet-4-6`
`claude-3-5-sonnet-20241022`	2025-10-28	`claude-sonnet-4-6`
`claude-2.0`	2025-07-21	`claude-opus-4-8`
`claude-2.1`	2025-07-21	`claude-opus-4-8`
`claude-3-sonnet-20240229`	2025-07-21	`claude-sonnet-4-6`

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runs locally

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ModelSunset Alerts

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Alert within a day when a watched model is deprecated
Reminders 90 / 30 / 7 / 1 days before shutdown
Slack or Discord alerts + personal iCal feed

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