Check model shutdown dates programmatically

SunsetDiff publishes the same dates as JSON and CSV under CC BY 4.0. Each date cites the official provider page and the day it was checked. Blank fields were not on that page.

Last reviewed October 20, 2026. Publisher: SunsetDiff.

Steps

Download the file. Fetch sunsetdiff.json, or upcoming.json for the next 90 days. No API key.
Read the date fields. shutdown_date is the date. shutdown_date_kind of not_before is a floor, not a deadline.
Read the Bedrock note. region_or_platform_notes on an aws-bedrock row limits the date to the Regions listed there.
Open the source. sources[0].url is the official page. Check it before you migrate.

Download

The files are static. API docs list every field.

sunsetdiff.json and sunsetdiff.csv
upcoming.json for the next 90 days
lookup for one model id
The dataset is also listed at Hugging Face.

curl

curl -fsSL https://sunsetdiff.com/dataset/sunsetdiff.json -o sunsetdiff.json
curl -fsSL https://sunsetdiff.com/api/v1/upcoming.json

Sources: CC BY 4.0 , SunsetDiff API docs , checked October 20, 2026.

What to read

shutdown_date and shutdown_date_kind are the pair. A kind of not_before is a floor, not a deadline. Anthropic publishes some retirement cells as not sooner than a date. SunsetDiff keeps that wording as not_before.

region_or_platform_notes on Amazon Bedrock rows repeats the Regions from the lifecycle table. Bedrock says a row's Regions are the ones that announced EOL date covers, and that another Region can show a different state.

Read sources[0].url before you migrate. That is the official page.

Sources: Anthropic model deprecations , Bedrock legacy lifecycle , SunsetDiff API docs , checked October 20, 2026.

MCP

The read-only MCP endpoint is /mcp on the API service. Tools: check_model, upcoming_shutdowns, migration_diff, scan_text. Client setup is on the MCP page.

Source: SunsetDiff API docs , checked October 20, 2026.

Related SunsetDiff pages

All guides

Questions

Does the JSON need an API key?

No. The files are public and static.

What if shutdown_date is blank?

The official page did not publish a date when SunsetDiff last checked it. The source URL is still on the row.