Best AI video generator with voice

HeyGen, PixVerse and SceneMixer each document all five voice controls. Four more document four. The count reads reference pages and does not judge how a voice sounds. As of 2026-09-12. The rule below was written before the places were computed, and no maker pays to be listed.

1Five controls, one point each

Speech in a generated scene raises five questions that a tool's documentation can answer or leave open: where the audio comes from, where the voice comes from, whether each character can keep a voice of their own, which languages are covered and whether the mouth is synced. A tool earns a point for each question its own reference answers with something concrete.

• Documents where the audio comes from
• Documents where the voice comes from
• Documents a voice for each character
• Documents the languages
• Documents lip-sync

2What silence costs

A row that reads “Not documented” on the reference earns nothing, and so does a vague promise that carries no detail. The register does not fill the gap from a blog post, a demo or a price list, since those are different documents with different standing.

3The voice table

4The reference pages quoted for the top places

• Voice source
  A voice clone is instant from one recording or professional from twenty minutes or more, and is then passed as a voice idtwo enrolment routes with a thresholdHeyGen, API quick start / recorded 2026-09-22
• Languages
  Video translation is documented for thirty or more languages, with voice cloning and lip-synccounted on the translation endpointHeyGen, API quick start / recorded 2026-09-22
• Audio source
  A text to speech endpoint turns a script into speech audio as a step of its ownan endpoint apart from the pictureHeyGen, API quick start / recorded 2026-09-22
• Audio source
  Audio on a lip-sync request is either the id of an uploaded audio file or both text-to-speech fields, a speaker id and the text, and the two modes are not mixeda supplied recording or text read by a voicePixVerse, Lipsync reference / recorded 2026-10-25
• Voice source
  The speaker list returns the built-in voices and the account's custom voices, and can be filtered to either kindcatalogue or supplied samplePixVerse, Get TTS Speaker List reference / recorded 2026-10-25
• Voice source
  A custom voice is created from an uploaded audio resource, and the call returns a speaker id for ita supplied samplePixVerse, Create Custom Voice reference / recorded 2026-10-25
• Per-character binding
  A speaker id taken from the TTS list is passed as the lip-sync speaker id on the request, beside the text to be reada speaker id per callPixVerse, Lipsync reference / recorded 2026-10-25
• Languages
  Each voice in the speaker list carries a languages field and an accent field, and no language is named on the pagea field on each voice, no list or countPixVerse, Get TTS Speaker List reference / recorded 2026-10-25
• Containers accepted
  Uploads accept MP4, MOV or WebM video and MP3, WAV, M4A or AAC audio, and each downstream endpoint sets its own duration, codec, dimension and file-size limitslimits left to each endpointPixVerse, Upload Media reference / recorded 2026-10-25
• Audio source
  The video model is described as performing the line in the chosen language while it renders the shotgenerated with the pictureSceneMixer, languages guide / recorded 2026-09-12
• Languages
  Dialogue is set per project to any of 15 languages, with Cantonese a 16th for dialogue onlya named list of 15SceneMixer, languages guide / recorded 2026-09-12
• Lip-sync
  The vendor states there is no separate dubbing step and no lip-sync patch afterwardsstated as unnecessary rather than as a featureSceneMixer, languages guide / recorded 2026-09-12
• Voice source
  The guide tells users to use a preset voice library or their own recordingstwo routes namedSceneMixer, compliance guide / recorded 2026-09-12
• What the vendor rules out
  Cloning an identifiable voice is described as a likeness issue, with US digital-replica statutes namedSceneMixer, compliance guide / recorded 2026-09-12
• Per-character binding
  A voice matched to a character from the built-in preset library is used as reference audio on every shot that character speaks ina matched preset kept on the characterSceneMixer, character voices guide / recorded 2026-10-13

Inclusion rule. Each row is one point from the list above, with every maker whose own pages state it, in the order of the ranking.

5Reading a tie at the top

Three tools on the full five do not separate on the points; they differ in how each control is built, which the quoted pages show: a voice id chosen from a catalogue is a different control from a cloned voice reused by id, though both count as a voice source. Lip-sync is likewise counted when documented, whatever form it takes.

One of the 16 tools read document none of the five controls and are left out of the table; each tool's own page in the register holds the full wording.

6Asked other ways

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• ai video generator with sound
• voice to video ai
• add ai voice to video
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• ai video generator with voice cloning

For two tools side by side on the same controls, the tool-against-tool pages set the rows next to each other, and the fields cover each control across every tool. The table starts from the voice rankings.