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 / APIShutdownReplacement
claude-mythos-preview——

Already shut down

Model / APIShutdownReplacement
claude-opus-4-1-20250805claude-opus-4-8
claude-opus-4-20250514claude-opus-4-8
claude-sonnet-4-20250514claude-sonnet-4-6
claude-3-haiku-20240307claude-haiku-4-5-20251001
claude-3-5-haiku-20241022claude-haiku-4-5-20251001
claude-3-7-sonnet-20250219claude-sonnet-4-6
claude-3-opus-20240229claude-opus-4-8
claude-3-5-sonnet-20240620claude-sonnet-4-6
claude-3-5-sonnet-20241022claude-sonnet-4-6
claude-2.0claude-opus-4-8
claude-2.1claude-opus-4-8
claude-3-sonnet-20240229claude-sonnet-4-6

Scan your code for deprecated models

runs locally

ModelSunset Alerts

Hear about a shutdown before your users do

Tell us which model IDs you depend on. We email you (or ping Slack/Discord) when one of them is deprecated, and again 90, 30, 7 and 1 day before shutdown — plus a personal calendar feed.

  • Watchlist of up to 50 model IDs across all providers
  • Alert within a day when a watched model is deprecated
  • Reminders 90 / 30 / 7 / 1 days before shutdown
  • Email, Slack or Discord alerts + personal iCal feed

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ModelSunset Team · early access

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  • Everything in Alerts, unlimited model IDs
  • Daily scans of up to 20 GitHub repos, including private ones
  • CI check across all repos + monthly “what breaks next quarter” report
  • Several Slack/Discord channels and an API key

Not built yet — no payment now. We’ll open it to the list first.