What we track
A model may move through preview, API launch, general release, open weights, and major updates. The timeline records those dates individually, while each model page collects its specifications, overview, and family links.
Sources and verification
Release dates and key specifications prioritize vendor blogs, developer docs, model cards, official repositories, and author papers. Relevant sources appear at the bottom of each model page.
Missing information
Parameter counts, context lengths, and licenses are omitted when reliable public information is unavailable. Conflicting figures are not presented as settled facts.
Coverage
The current edition covers 182 models and 189 release records across 32 model families in language and agents, image generation, and video generation, updated through 2026-08-31.