Sentioscope

Speech and voice controls, as each vendor documents them

How long a generated shot with speech can run

Eight entries publish a length. Two give a menu of fixed shot lengths, two give a range to choose from, two give a ceiling in minutes, one caps the file rather than the shot, and one publishes a free allowance. The rest say nothing. As of 2026-09-12.

A menu, a range and a ceiling constrain differentlyFixed options force a scene to be written in those units. A range leaves the decision to a writer. A ten-minute ceiling is not a constraint for drama at all, because nothing holds one generated shot that long.What the published length actually does to a scriptA fixed menuWrites the scriptDialogue in eight-secondbeats survives the modelunchangedA wide rangePostpones the cutFreedom at writing time,rework at generation timeA long ceilingBarely bindsAimed at a single speakerfacing camera, not atcoverageThe length column is not a ranking
Fig. 1 Reading the three as one number misses the difference; the menu is the one that reaches a script.
Published lengths bearing on a shot that carries speech. Recorded 2026-09-12.
ModelWhat is documentedDetail
D-IDFive minutes for a clip, ten for a talkSupplied audio, not the script
HedraA maximum duration of ten minutesAnd the take normally decides the length
MiniMaxFour to fifteen secondsPer generation
PixVerseSixty seconds, and a hundred megabytesAudio and video alike
Sora 2Sixteen or twenty seconds, to a total of 120Extensions add twenty at a time
sync-3Fifteen seconds on a free accountPaid limits follow the plan
VeoFour, six or eight secondsA fixed menu rather than a range
Wan 3.0Two to thirty secondsPer generation

Inclusion rule. Entries whose documentation states a duration for a generation, its audio, or the allowance a plan includes. A duration mentioned in marketing material without appearing in the documentation read for this register does not earn a row. Order. Alphabetical by model name.

1A menu, a range and a ceiling are three different constraints

A fixed menu of four, six or eight seconds forces a scene to be written in those units. A range of two to thirty leaves the decision to a writer. A ceiling of ten minutes is not really a constraint at all for drama, because nothing holds a single generated shot that long.

Reading them as one number misses the difference. The menu is the one that reaches a script: dialogue written in eight-second beats survives the model, and dialogue written to a thirty-second paragraph has to be cut before it can be generated.

2The longest published figures belong to talking heads

Ten minutes of avatar video and ten minutes of supplied audio are the largest numbers here, and they come from products aimed at presentations rather than drama. A single unbroken take is exactly what a corporate video wants and exactly what a short drama never uses.

So the length column is not a ranking. A short ceiling on a generator that cuts every few seconds is a better fit for a series than a long one on a product that expects a single speaker facing the camera.

3Extensions turn a ceiling into a sequence of joins

One entry reaches two minutes by adding up to twenty seconds at a time. Each addition is a join, and a join is a place where a voice, a level or a room tone can shift. The published total is therefore the length of an assembly rather than of a take.

Treated as a budget for one beat rather than one scene, the same figure becomes useful. Treated as a promise of two continuous minutes it will disappoint, and nothing in the documentation says which reading is intended.

  • Shot length a line has to fit
    Generations run 16 or 20 seconds, and an extension adds up to 20 seconds at a time to a total of 120OpenAI, video generation guide / recorded 2026-09-22
  • Length per call
    Audio and video are each capped at sixty seconds and one hundred megabytesPixVerse, speech and lip sync guide / recorded 2026-09-22
  • Shot length set by the take
    The audio normally determines the video length, and omitting the duration follows the source audioHedra, avatar video guide / recorded 2026-09-22
  • Audio source
    A script is either text of up to forty thousand characters or an audio url, with audio limited to five minutes for clips and ten for talksa script read aloud or a fileD-ID, create a talk reference / recorded 2026-09-22
  • Length per call on the free tier
    A free account runs one generation a month with a fifteen-second ceiling, with paid limits following the planSync, sync-3 model documentation / recorded 2026-09-22

4Sources

Every line is read from the vendor documentation linked on the speech controls page, checked 2026-09-12. What counts as documented is on how read. Nearby: Fifteen seconds of voice, Answers software can check, What silence costs.