SunsetDiff dataset

Cite this dataset as SunsetDiff, “SunsetDiff model retirement dataset,” CC BY 4.0, https://sunsetdiff.com/dataset/sunsetdiff.json and https://sunsetdiff.com/dataset/sunsetdiff.csv. Publisher: SunsetDiff. Each date and spec cites the official page it came from, with a last_checked date. Blank fields were not published there.

Downloads

• sunsetdiff.json — JSON download, CC BY 4.0
• sunsetdiff.csv — CSV download, CC BY 4.0
• JSON Schema
• llms.txt and llms-full.txt

JSON API

• /api/v1/index.json
• /api/v1/providers.json
• /api/v1/models.json
• /api/v1/upcoming.json — next 90 days
• /api/v1/changes.json
• /api/v1/models/<provider>/<slug>.json
• /api/v1/lookup/<model-id>.json
• /api/v1/migrations/<from>__to__<to>.json

MCP server

The Node service exposes a read-only MCP endpoint at /mcp. Tools: check_model, upcoming_shutdowns, migration_diff, scan_text.

npx github:<owner>/model-migrate mcp

GitHub Action

- uses: <owner>/model-migrate/action@main
  with:
    warn-days: "60"
    fail-days: "14"

It scans files for known model ids and writes warnings. If the API is down, it uses a bundled snapshot. Marketplace publishing is a later manual step.

Other machine files

• llms.txt and llms-full.txt
• calendar.ics
• changes.xml