# AI model changes dataset

Download confirmed model releases and dated retirements with model IDs, effective dates, replacements, and primary sources. Observation timestamps are null when the dataset did not collect them.

## JSON endpoint

- Public JSON: https://benchlm.ai/api/data/ai-model-changes

## Evidence boundary

Only source-linked confirmed releases and complete dated retirement records enter this export.

Last updated: September 29, 2026

Canonical page: https://benchlm.ai/data/ai-model-changes