Whether generated audio is charged for separately

Nothing in this register charges for audio on its own. Where cost is mentioned at all the sound sits inside a per-second rate for the video, or has no line of its own, and one vendor states that disabling it does not reduce the price. From 4 source pages, read 2026-09-12 to 2026-09-22; no maker pays to be listed.

Inclusion rule. Entries whose documentation says anything about how generated audio is priced. Entries publishing a rate for video alone, with no statement about the audio inside it, do not earn a row. Order. Alphabetical by model name.

1Bundling sound into a video rate has a quiet consequence

If the audio has no price of its own, then no vendor has an incentive to describe its quality, and a production has no way to weigh it against an alternative. The sound arrives, it is free at the margin, and whether it is usable is discovered rather than priced.

The honest way to plan around that is to budget for replacing it and be pleased if the budget goes unspent. Treating generated dialogue as a guide track keeps a post-production estimate truthful.

2The real cost of audio is outside every rate card here

Replacing a generated performance means a session, a performer, a mix and possibly a regenerated shot. None of that appears on a pricing page, and it is the largest number in the conversation for any series that decides the generated read is not good enough.

That is why a statement about what silence costs is worth recording even though it looks trivial. It tells a reader the vendor has thought about the switch, and it removes a false saving from a plan.

3Most of the register is silent, because the documents are technical

Twelve entries say nothing about cost at all. The pages read for this register are references, cards and guides rather than price lists, so commercial statements appear incidentally if they appear.

Recording the four that say something is still the right thing to do. Incidental sentences about pricing are usually more candid than a pricing page, because nobody wrote them to be persuasive.

• What choosing silence costs
  Enabling or disabling audio does not affect pricingAlibaba Cloud, Wan 3.0 API reference / recorded 2026-09-22
• 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
• Audio source
  Audio is generated with the video rather than added afterwardsgenerated with the pictureGoogle, Veo documentation / recorded 2026-09-12
• Audio source
  Native speech with lip-sync tied to the speaker who is on screenspeaker-awareMiniMax, video generation guide / recorded 2026-09-12
• Audio source
  The audio parameter defaults to true so the returned video carries an audio track, and false returns one withouton unless it is switched offAlibaba Cloud, Wan 3.0 API reference / recorded 2026-09-22

4Voices in a drama pipeline

For the speech side of “Charging for audio”, SceneMixer's guides describe how lines are spoken:

AI dubbing replaces the audio of a finished clip and then tries to match the lips. Native-language generation gives the video model the line in the target language before the shot exists, so mouth movement, pauses and shot length are produced for that language.

SceneMixer, Native-Language Dialogue vs. Dubbing in AI Video (2026): Why the Cast Should Speak the Line — “Is native-language generation the same as AI dubbing?” (read 2026-10-13)

SceneMixer writes dialogue into the script analysis, assigns each line to a shot with a speaker and a short delivery note, and the video model performs it — picture and audio generated together, so the mouth forms that sentence in the language you chose.

SceneMixer, AI Dialogue Generator (read 2026-10-13)

5Sources

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: Asking for an accent, Changing a line, Second language.