Veo 3.1 release notes, entry by entry
Veo 3.1, in the Google Veo line: 4 entries, 15 October 2025 to 13 January 2026, covering new model, length, references, frames, access and resolution. Dated before it in this line: Veo 3. As of 2026-09-25.
| Date | What changed | Kinds | Source |
|---|---|---|---|
| 15 October 2025 | Veo 3.1 preview adds extension, up to three reference images and first-and-last-frame input | new model, length, references, frames | Maker's note |
| 17 November 2025 | Veo 3.1 and Veo 3.1 Fast become generally available on Vertex AI | access | Maker's note |
| 8 December 2025 | Veo 3.1 video extension reaches Vertex AI in preview | length | Maker's note |
| 13 January 2026 | On Vertex AI, reference-to-video takes 9:16 and 1080p or 4K outputs can be upsampled | resolution, references | Maker's note |
Inclusion rule. All entries filed under this version: the maker's notes, platform arrivals and undated rows. Order. By date, oldest first; undated rows last.
The entries for Veo 3.1 cluster around a new model or snapshot, clip length or extension and references or consistency.
1Each entry
15 October 2025, from Google, Gemini API changelog
Released Veo 3.1 and 3.1 Fast models in public preview, with new features including: Extending Veo-created videos. Referencing up to three images to generate a video. Providing first and last frame images to generate videos from.
Google, Gemini API changelog
- October 15Veo 3.1 preview adds extension, up to three reference images and first-and-last-frame input2025
17 November 2025, from Google Cloud, Vertex AI release notes
Veo 3.1 is Generally Available, and introduces the following models: Veo 3.1 Veo 3.1 Fast
Google Cloud, Vertex AI release notes
- November 17Veo 3.1 and Veo 3.1 Fast become generally available on Vertex AI2025
8 December 2025, from Google Cloud, Vertex AI release notes
Veo 3.1 supports video extension in Preview.
Google Cloud, Vertex AI release notes
- December 8Veo 3.1 video extension reaches Vertex AI in preview2025
13 January 2026, from Google Cloud, Vertex AI release notes
9:16 aspect ratio for reference-to-video. Upsampling for videos generated at 1080p and 4k resolutions.
Google Cloud, Vertex AI release notes
- January 13On Vertex AI, reference-to-video takes 9:16 and 1080p or 4K outputs can be upsampled2026
2Versions either side in this line
- Dated before it: Veo 3, 6 entries, first dated 17 July 2025.
- Dated after it: Veo 3.1 Lite, 2 entries, first dated 31 March 2026.
3Same kinds of change elsewhere, within six weeks
- 5 September 2025, Kling AI: Kling 2.1
- 12 September 2025, Wan: Wan 2.2
- 18 September 2025, Luma Ray: Ray3
- 23 September 2025, Wan: Wan 2.5
- 24 September 2025, Vidu: Vidu Q2
- 6 October 2025, Sora: Sora 2
- 21 October 2025, Vidu: Vidu Q2
- 29 October 2025, LTX: Not named in the note
- 9 November 2025, PixVerse: Not named in the note
- 10 November 2025, Wan: Wan 2.2
- 17 November 2025, Kling AI: Kling 2.5 Turbo
The whole line: Google Veo. Quarter: Q4 2025.
4Notes read
- Google, Gemini API changelog, read 2026-09-25
- Google Cloud, Vertex AI release notes, read 2026-09-25