Seedance 2.5 vs Veo 3.1

The rows above come from the same tables as the Seedance 2.5 and Veo 3.1 pages, so they say what DreamBench runs today. The table below adds what ByteDance and Google say on their own pages, read on November 1, 2026, and where each model runs on DreamBench.

A DreamBench video uses one model for every scene. To compare the two on your own idea, make the same brief twice, once on each, and keep the one you prefer.

Length is the plainest difference. A Seedance 2.5 clip runs from 4 to 30 seconds, and ByteDance’s launch post of July 31, 2026, says the model can organize several logically connected shots in that one clip, so a story has a beginning, a middle and an end. A Veo 3.1 clip is 4, 6 or 8 seconds on all three of Google’s tiers, one shot each.

On DreamBench’s Video page, that one clip is the whole video: up to 30 seconds on Seedance 2.5, up to 8 on Veo 3.1. In Film Studio, DreamBench plans the scenes and joins them, so either model can make a longer video: up to 30 seconds on Starter, 2 minutes on Plus and 5 minutes on Ultra and Studio. There, a new film is cut into clips of 3 to 12 seconds, and Seedance 2.5 may still cut between shots inside a clip. Each Veo 3.1 scene is 4, 6 or 8 seconds, and a scene that carries reference sheets runs 8, because Google accepts reference images only on 8-second clips.

In Google’s own tools, Veo 3.1 can extend a clip from its last second, and ByteDance’s tools extend Seedance 2.5 clips too. DreamBench doesn’t extend a clip on either model: a longer video is more scenes.

Only Seedance 2.5

• Cuts between linked shots inside one clip, on the Video page and in Film Studio.
• Runs up to 30 seconds in one clip on the Video page.
• Lets you switch sound off, at the same price per second.
• Renders 480p, the lowest-priced way to try an idea before a 720p or 1080p take.
• Frames 1:1, 4:3 and 21:9 as well as 16:9 and 9:16.
• Speaks the 11 languages BytePlus lists, Indonesian and Portuguese among them.
• Runs at every resolution on every plan, Starter included.

Only Veo 3.1

• Renders 4K, on the full model, on Plus and above.
• Comes in three tiers: Veo 3.1 for finished work, Fast for ads and quick tests, Lite for trying ideas and making clips in volume.
• Takes up to 3 reference sheets of a person, character or product in a scene, on the full model, with no refusal of real faces like Seedance 2.5’s.
• Carries SynthID, Google’s invisible mark that identifies its videos as AI-generated.

Where each falls short, in its maker’s words: ByteDance says complex motion can look physically off and scenes where several subjects interact are not yet fully stable; Google says consistent speech, especially in short lines, is still an area of active development.

A Seedance 2.5 prompt covers a timeline. BytePlus’s prompt guide opens with a one-sentence summary of the subject, the place, the event, the style and the camera, then divides the clip by timestamps or by “Shot 1”, “Shot 2”, each with its visuals, camera, action, dialogue and sound. It asks for positive descriptions, with two exceptions it honors: “no subtitles” and “no BGM”.

A Veo 3.1 prompt covers one shot. Google Cloud’s prompting guide sets it out as cinematography, subject, action, context, then style and ambience. Sound goes in its own sentences after the picture: spoken lines in quotation marks, “SFX:” for effects and “Ambient noise:” for the place. Say what you want rather than what you don’t: an empty street, not “no people”.

• Time: give Seedance 2.5 several shots with their seconds; give Veo 3.1 one main action and one camera move.
• Dialogue: in 8 seconds, keep a Veo 3.1 line to about 12 to 14 words, at about 2 words a second; a 30-second Seedance 2.5 clip has room for an exchange.
• Language: name the language a Seedance 2.5 line is spoken in; write Veo 3.1 prompts in English.
• Music: Seedance 2.5 makes music with the picture, so ask for “no BGM” if you want none; DreamBench’s Veo 3.1 prompt ideas keep to dialogue, effects and ambience.

On the Video page, both models get your prompt exactly as you wrote it. In Film Studio, DreamBench writes each scene’s prompt from your brief. The Seedance 2.5 prompt guide and the Veo 3.1 prompt guide go further, with examples to copy.

Google Cloud’s Veo 3.1 page, on its Gemini Enterprise Agent Platform, lists a retirement date of “November 17, 2026 or later” for Veo 3.1 and Veo 3.1 Fast, both released there on November 17, 2025. It lists no retirement date for Veo 3.1 Lite, still a Preview there. fal’s Veo 3.1 page, the service DreamBench runs Veo 3.1 on, says the endpoint “will be deprecated on November 17, 2026”. Both pages were read on November 1, 2026.