VideoGenReview

What each AI video model's release notes say changed

A snapshot is a release even when the name stays

When a maker moves a model name to a newer build, nothing in a user's request changes, but the output can. OpenAI's January 2026 note moved sora-2 to a December 2025 snapshot and told users who needed the earlier behaviour to call the October one by its dated name. From 2 source pages, read 2026-09-25; no maker pays to be listed.

Where this note's examples come fromThe examples in this note come from 3 entries across 2 model lines.ExamplesSora1 entryWan2 entries
Fig. 1 Each example links to its line page.

Alibaba Cloud publishes dated Wan 2.7 builds the same way. The register counts each as its own entry. For anyone comparing clips made months apart, the snapshot date matters more than the version number.

It also explains a common complaint, that a prompt which worked in spring gives something different in summer. If the maker moved the name in between, the prompt did not change and the model did. The notes are where that shows up, and the register keeps those days so they can be matched against a project's own dates.

The entries this note draws on, read 2026-09-25.
DateLineVersionWhat changed
13 January 2026SoraSora 2The sora-2 name now points to a December 2025 snapshot; the October snapshot stays callable
26 April 2026WanWan 2.7A dated Wan 2.7 text-to-video snapshot from 25 April 2026
1 July 2026WanWan 2.7A second dated Wan 2.7 snapshot, from 12 June 2026

Inclusion rule. Entries used as examples in this note. Order. By date, oldest first; undated rows last.

1In the notes

Updated the sora-2 slug to point to sora-2-2025-12-08 . If you need the previous model snapshot, use sora-2-2025-10-06 .

OpenAI, API changelog

This version is a snapshot as of April 25, 2026.

Alibaba Cloud Model Studio, newly released models

This version is a snapshot as of June 12, 2026.

Alibaba Cloud Model Studio, newly released models

2A pipeline on current models

Release notes such as “A snapshot is a release even when the name stays” matter once a pipeline runs the models; SceneMixer's guides describe how it does:

The second trim replaces the first trimmed version; the generated clip stays in Version History.

SceneMixer, Trim a Clip: Cut the Start or the End Without Regenerating — “Can I trim the same clip twice?” (read 2026-10-13)

The default for text stays the cheaper tier; Recommended is the badge on the tier the site suggests for hard episodes.

SceneMixer, Doubao Seed Evolving: the recommended text tier — “Is Recommended the same as default?” (read 2026-10-13)

3Other reading notes

4Notes read