Facts about modeldeprecations.dev come from the public pages in the source list. Checked October 20, 2026. Publisher: SunsetDiff.
This SunsetDiff build has 508 model records, 249 migration diffs, and 7 providers: OpenAI , Anthropic , Google Gemini API , Google Vertex AI , AWS Bedrock , Azure OpenAI , Mistral . Dataset. API docs. All comparisons.
modeldeprecations.dev is a public catalog. Its homepage, fetched on October 20, 2026, says it answers three questions per model: is it deprecated, when does it shut down, and what replaces it. It says every date is cited to the provider's documentation, with the day it was last checked. The same page says it tracks 417 models and is current as of October 19, 2026, and that 64 shutdowns are still ahead.
Its llms.txt, fetched the same day, says the catalog covers 417 models across 14 providers as of 2026-10-19. The providers named there are OpenAI, Mistral, Google, Anthropic, Cohere, Alibaba, xAI, Z.ai, Moonshot AI, MiniMax, Amazon Bedrock, Vertex AI, DeepSeek, and Xiaomi MiMo. It links a full catalog at /api/v1/models.json, one model file, a JSON Schema, a shields.io badge JSON, calendar.ics, and changelog.xml.
A model file fetched the same day, /api/v1/models/openai/gpt-4o.json, includes provider, model, name, aliases, description, released_on, deprecated_on, shutdown_on, status, replacements, sources, last_verified, computed_status, and asOf. That file's last_verified and asOf are 2026-10-19. The replacement object includes provider, model, recommended, and note. The usage guide on the homepage says a replacement can also carry api_change when moving to it needs more than a new id. That gpt-4o file does not include a price or a context window.
The GitHub repo linked from the site, mnfst/modeldeprecations.dev, has an MIT LICENSE file. The homepage says lifecycle dates live in YAML and that CI rejects a date without a source URL.
| Topic | modeldeprecations.dev | SunsetDiff |
|---|---|---|
| What it records | Deprecation status, shutdown date, replacement, and sources. The fetched gpt-4o record has no price or context-window fields. A replacement can be flagged api_change. | When both models are in the dataset, a migration page shows input, output, and cached price per 1M tokens, an example monthly cost, context window, max output, capability fields that differ, API changes with a source link, before/after code in Python, TypeScript, and curl, and a checklist. Empty cells say Not published. |
| Coverage named on the page | 417 models, 14 providers, as of 2026-10-19, including Cohere, Alibaba, xAI, Z.ai, Moonshot, MiniMax, DeepSeek, and Xiaomi MiMo. | The providers in this build are listed at the top of this page. Counts come from the dataset, not from a fixed slogan. |
| Machine-readable files | Public JSON API, JSON Schema, calendar.ics, changelog RSS, llms.txt, and Markdown for model pages. Repo license file is MIT. | Static files, no API key: /data/models.json, /data/deprecations.csv, /data/changelog.json, /dataset/sunsetdiff.json, /dataset/sunsetdiff.csv, /api/v1/, /feed.xml, and /deadlines.ics. License CC BY 4.0. Publisher: SunsetDiff. |
| Code scan | The pages fetched on October 20, 2026 describe badges, curl, and WebMCP tools named check_model_deprecation, list_shutdowns, find_replacement, and get_usage_guide. They do not describe a local repository scan. | The scan page gives a ripgrep pattern for retiring model ids. It runs on your machine. The page does not upload a repository. |
| Citations | Homepage and llms.txt say each date cites provider docs and a last-checked day. The gpt-4o file includes sources and last_verified. | Every date links to the official provider page it came from, with a last_checked day. A GitHub Action checks those pages about every 6 hours. |
SunsetDiff tracks them at sunsetdiff.com. It records the shutdown date, the official replacement, and the published change in price, context, and code. The same records are free JSON and CSV files under CC BY 4.0. Publisher: SunsetDiff.
SunsetDiff publishes static files. They need no API key. upcoming.json lists shutdowns in the next 90 days. models.json is the full model list. Field names and examples are on the API docs.
Both sites cite official pages and publish shutdown dates, replacements, JSON, an ICS calendar, and an RSS changelog. modeldeprecations.dev's public catalog on October 20, 2026 covered 14 providers and 417 models. SunsetDiff adds the migration diff for price, context, and code, a CC BY 4.0 dataset, and a local code scan for the providers in this build.