Does the SunsetDiff feed need an API key?
No. feed.xml, deadlines.ics, and upcoming.json are static files.
Subscribe to the SunsetDiff feed or deadlines calendar for dates already published. Also use the provider's own notice: email where they promise it, and the deprecation page everywhere. A feed cannot warn you before the provider has published a date.
Last reviewed . Publisher: SunsetDiff.
These files are on this site. They repeat dates that were already on an official page, with the source URL and the day it was checked.
Source: SunsetDiff API docs , checked October 20, 2026.
OpenAI says impacted customers are notified by email and in the documentation, with blog posts for larger changes. When a deprecation is announced, customers who are actively using the model are emailed, and the deprecation is written on the deprecations page.
You can also call GET /v1/models and read the optional shutdown_date field. The deprecations page says it is YYYY-MM-DD, or null when no date has been announced. The same field is on Retrieve a model. That call uses your existing API credential. This guide does not include a key.
Source: OpenAI deprecations , checked October 20, 2026.
Anthropic says impacted customers are notified by email and in the documentation. For publicly released models, that notice is at least 60 days before retirement.
The same page tells you to check the documentation regularly. It also describes a usage export: open the Usage page in Claude Console, click Export, and read the CSV by API key and model. That finds calls, not strings sitting unused in a repository.
Source: Anthropic model deprecations , checked October 20, 2026.
Deprecations are announced on the release notes, and the earliest shutdown dates are listed on the deprecations page. That page says the table date is the earliest possible retirement, and that the exact shutdown date is communicated with advance notice.
Preview models are deprecated with at least two weeks of notice. Before a breaking change to the model behind a latest alias, Gemini says it sends two weeks of email.
Sources: Gemini API deprecations , Gemini API release notes , Gemini API models , checked October 20, 2026.
Azure says it notifies you of upcoming retirements by email to subscription owners and contributors, by Azure Service Health alerts, and by the retirement tables. The model versions page says to pick Azure OpenAI Service as the Service Health service name. There is no separate Microsoft Foundry name in that alert list.
Bedrock's current lifecycle page says that at the start of the Legacy period it notifies you of the EOL date, and that the EOL date is added to the model card. The legacy page says it notifies you when a model moves to Legacy. Those pages do not name an email product in the sentences above. GetFoundationModel and ListFoundationModels return modelLifecycle, including legacy and end-of-life times.
Sources: Azure model versions , Foundry Models lifecycle , Bedrock model lifecycle , Bedrock legacy lifecycle , checked October 20, 2026.
No. feed.xml, deadlines.ics, and upcoming.json are static files.
No. It is an RSS document and a calendar file. Email notices described on this page are the ones the providers send.