# AI Model Lifecycle & Deprecation Index

A source-cited, cross-vendor record of **AI model lifecycle** — is a model still live, when does it
sunset, and what's the migration target — across **OpenAI, Anthropic, Google (Gemini), and Amazon
Bedrock**. Every date is transcribed from the provider's own official deprecation/lifecycle page and
carries that source URL. Built for agents that need to know, at runtime, whether the model they're
about to call still exists.

- **Site:** https://data.oscar-lopez.com/model-lifecycle
- **API + MCP host:** https://lifecycle.oscar-lopez.com
- **Maintainer:** Oscar E. López, Ph.D. (Information Systems, UMass Amherst) — independent project.
- **License:** CC BY 4.0 · Cite as: *López, O. E. (2026). AI Model Lifecycle & Deprecation Index. data.oscar-lopez.com/model-lifecycle*

## Coverage
71 models across 4 providers (active / preview / deprecated / retired), with status, release /
deprecation / shutdown dates, and provider-recommended replacements. Verified 2026-09-08.

## REST endpoints (free)
- `GET /v1/lifecycle/model?id=ID` — one model: status, dates, days-to-shutdown, replacement, source
- `GET /v1/lifecycle/deprecations?within_days=90` — models shutting down within N days
- `GET /v1/lifecycle/provider?provider=openai|anthropic|google|aws-bedrock` — a provider's models
- `GET /v1/lifecycle/stats` — counts by provider/status + next shutdown
- `GET /v1/lifecycle/all` — full export (free during the public preview; metered via x402 when live)

## MCP tools
Endpoint: `https://lifecycle.oscar-lopez.com/mcp`
- `model_lifecycle` — full lifecycle of one model (free)
- `is_model_live` — is a model still callable, with its sunset date (free)
- `upcoming_deprecations` — models sunsetting within N days across all providers (free)
- `get_model_lifecycle_all` — full export (free during preview)

## Discovery
`/.well-known/agent-card.json` (A2A), `/.well-known/x402`, `/openapi.json`

## How it's built
Cloudflare Worker + D1. The index is derived live from a `models` table; days-until-shutdown is
computed at request time. Values come from official provider pages only; fields a provider doesn't
publish are left blank rather than inferred. A model's lifecycle on a hosting platform (e.g. Amazon
Bedrock) can differ from the model-maker's own API — each row records which surface it describes.