The four tools that publish nothing at all
Four tools declare no same-host language alternates and publish no output or voice language list: Hailuo, invideo AI, LTX Studio and Pika. Runway and Vidu were on this page until this pass and have since declared five and nine alternates respectively. As of 2026-09-22.
| Tool | What is published | Detail |
|---|---|---|
| Hailuo | None declared | hailuoai.video |
| invideo AI | None declared | invideo.io |
| LTX Studio | None declared | ltx.io |
| Pika | None declared | pika.art |
Inclusion rule. Tools with a public English site selling AI video generation, read for hreflang alternates on the host being read and for any published language list. A vendor that declares alternates only on other hosts is not on this page, because it has published something. Order. Alphabetical by tool name.
1English-only is a coherent strategy, not an oversight
Four vendors shipping in one language is not four mistakes. It is a market position: sell to English-speaking buyers, let everyone else use the product in English, and spend the effort elsewhere. Two of these are generation-first products where the buyer is often a developer working through an API, and an interface language matters much less to that reader.
The register records the absence without calling it a gap. What it is for a given reader depends entirely on who that reader is selling to, and for an English-language studio it is not a finding at all.
2Two rows left this page between one reading and the next
Runway declared nothing when this register was first written and now declares five alternates: French, Japanese, Korean and Brazilian Portuguese alongside English. Vidu declared nothing and now declares nine. Both were read again on the same pass that added ten new entries, and both counts changed in the same direction.
That is the argument for a check date on every cell rather than a single publication date on the page. A language list is one of the fastest-moving claims a vendor makes, and a reader who found this page six months ago would have been told something that is no longer true about two of its rows.
3Silence in the voice column has a different weight
No site alternates tells you about a marketing decision. No published voice languages tells you that a production planning a non-English series has nothing to plan against, which is a harder problem than a menu in the wrong language. Nine of the 18 tools here are silent in that column, so these four are not unusual in it.
All four are silent in both. For the site column that is a choice; for the voice column it may simply mean the capability is not framed that way in their documentation, and this register cannot distinguish those two from published pages.
4Why four rows that all say the same thing are still four rows
Merging them into one line reading four tools publish nothing would be shorter and would stop a reader checking any individual vendor. Each row carries its own domain and its own check date, and each can change on its own, as two of them just did.
The next of them to publish a list moves off this page and onto the register with a populated cell, which is the outcome this page exists to make visible.
5The three columns behind this question
| Column | How many of the 18 tools name a list |
|---|---|
| Dialogue language | 5 of 18 tools |
| Document language | 1 of 18 tools |
| Site language | 9 of 18 tools |
Inclusion rule. The three columns this register keeps. A column stays listed even when no vendor names a list, because silence in a column is itself recorded. Order. Alphabetical by column name.
- Site languagesNo language alternates declarednothing declared
- Site languagesNo language alternates declarednothing declared
- Site languagesNo language alternates declarednothing declared
- Site languagesNo language alternates declarednothing declared
6How one generator handles languages
On the language side of “The silent four”, SceneMixer's published guides say the following:
SceneMixer works in 15 languages on three layers at once. The interface is available in English, Chinese, Portuguese, Korean, Spanish, Japanese, Indonesian, Russian, French, Italian, Dutch, Arabic, Turkish, German and Ukrainian.
SceneMixer, AI Short Drama in 15 Languages (2026): Interface, Scripts and the Dialogue Your Cast Actually Speaks (read 2026-10-13)
The spoken lines and the end card follow your interface language across fifteen dialogue languages, with the cast and setting adapted to that market. The end card falls back to a language it can typeset when a script needs shaping or right-to-left layout.
SceneMixer, AI Ad Video Generator — “Which languages can the ad be in?” (read 2026-10-13)
7Sources
Counts and lists are read from the vendor pages named in the register, checked 2026-09-22. The counting rule is on how counted. Nearby: Performing in-language, How counted.