Seedance 2.5: every dated change
Seedance 2.5, in the Seedance line: 6 dated entries from 6 August 2026 to 22 September 2026 and 1 undated row, covering new model, length, resolution and tiers. Dated before it in this line: Seedance 2.0 Mini. As of 2026-09-25.
| Date | What changed | Kinds | Source |
|---|---|---|---|
| 6 August 2026 | Seedance 2.5 arrives on Higgsfield with clips up to 30 seconds | new model, length | Arrival on Higgsfield |
| 6 August 2026 | Seedance 2.5 arrives on Luma with 30-second single-pass generation | new model, length | Arrival on Luma |
| 11 August 2026 | Seedance 2.5 reaches Runway through its MCP, up to 30 seconds | new model, length | Arrival on Runway |
| 14 August 2026 | Seedance 2.5 at 1080p on Higgsfield, in early access | resolution | Arrival on Higgsfield |
| 15 August 2026 | Seedance 2.5 at 1080p across Runway | resolution | Arrival on Runway |
| 22 September 2026 | A 480p Draft Mode for Seedance 2.5 on Higgsfield, before the 1080p final | tiers | Arrival on Higgsfield |
| Undated version row | Seedance 2.5: 4 to 30 seconds, 1080p in 10-bit | length, resolution | Model list row |
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.
Read together, the entries show where Seedance 2.5 put its effort: a new model or snapshot, clip length or extension and resolution, frame rate or shape.
1Each entry
6 August 2026, arrival on Higgsfield
Seedance 2.5 from ByteDance is available on Higgsfield, the latest version in the Seedance video family.
Higgsfield, changelog
- Seedance 2.5Seedance 2.5 arrives on Higgsfield with clips up to 30 seconds
6 August 2026, arrival on Luma
With Seedance 2.5 on Luma you can get native 30-second generation in a single pass
Luma, Seedance 2.5 on Luma post
- Seedance 2.5: Now Live in LumaSeedance 2.5 arrives on Luma with 30-second single-pass generation
11 August 2026, arrival on Runway
Generate up to 30 seconds of video with native audio
Runway, changelog
- Seedance 2.5Seedance 2.5 reaches Runway through its MCP, up to 30 seconds
14 August 2026, arrival on Higgsfield
Seedance 2.5 now generates in 1080p on Higgsfield, in early access.
Higgsfield, changelog
- Seedance 2.5 in 1080pSeedance 2.5 at 1080p on Higgsfield, in early access
15 August 2026, arrival on Runway
Seedance 2.5 now generates in 1080p across all surfaces.
Runway, changelog
- SD2.5 1080pSeedance 2.5 at 1080p across Runway
22 September 2026, arrival on Higgsfield
Generate previews at 480p, pick the take that works, then generate that one at 1080p on Seedance 2.5.
Higgsfield, changelog
- Seedance 2.5 Draft ModeA 480p Draft Mode for Seedance 2.5 on Higgsfield, before the 1080p final
Undated version row, model list row
Duration: 4–30 s
BytePlus ModelArk, model list
- dreamina-seedance-2-5-260628Seedance 2.5: 4 to 30 seconds, 1080p in 10-bit
2Versions either side in this line
- Dated before it: Seedance 2.0 Mini, 3 entries, first dated 21 June 2026.
- Dated after it: none in the register.
3Same kinds of change elsewhere, within six weeks
- 30 June 2026, Gemini Omni: Gemini Omni Flash
- 7 July 2026, LTX: Not named in the note
- 31 July 2026, Grok Imagine: Grok Imagine 1.5
- 2 August 2026, LTX: LTX-2.3
- 6 August 2026, Wan: Wan 3.0
- 10 August 2026, LTX: LTX-2.5
- 10 August 2026, Runway: Gen-4.5
- 11 August 2026, LTX: LTX-2.5
- 18 August 2026, LTX: LTX-2.5
- 20 August 2026, Runway: Runway Ruby
- 20 August 2026, Wan: Wan 3.0
- 24 August 2026, Wan: Wan 3.0
6 more such entries are on the quarter pages.
The whole line: Seedance. Quarter: Q3 2026.
4Notes read
- Higgsfield, changelog, read 2026-09-25
- Luma, Seedance 2.5 on Luma post, read 2026-09-25
- Runway, changelog, read 2026-09-25
- BytePlus ModelArk, model list, read 2026-09-25