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AI video dubbing with lip-sync, in 21 languages
Upload a clip of someone speaking and pick a language. Language Swap translates the speech, reads it in a new voice or the speaker's own cloned voice, and moves the lips to match. Lipsync, Voice Change and Captions sit right next to it.
One video, every market
Swap this 30-second product demo into Spanish, Portuguese and German for our Meta campaigns in Mexico, Brazil and Germany.
Localize ads and social clips
Upload a clip of up to 60 seconds and choose from 21 languages, including Spanish, Portuguese, French, German, Italian, Japanese, Korean, Hindi, Arabic, Indonesian, Turkish and Vietnamese. The spoken language is detected for you, the speech is translated and spoken again, and the lips follow the new words.
Dub my founder intro into Japanese and keep my own voice.
Keep the speaker's own voice
Turn on Keep the speaker's voice and the translation is read in the voice of the person in the video, cloned from a short sample of the clip. It works for nine targets: English, Spanish, French, German, Italian, Portuguese, Russian, Japanese and Korean; other languages use a natural stock voice.
Make this presenter say: Our spring sale ends Sunday, tap the link to get 20% off.
Lipsync any clip to new lines
Already have the audio, or want to change what someone says? Lipsync takes a clip of a person facing the camera plus an uploaded recording or a typed script with a stock voice, and returns the same clip with the lips matched. Voice Change keeps the words and speaks them again in a different stock voice, for video or audio.
Add Karaoke-style captions at the bottom of this dubbed French clip.
Captions burned in for sound-off feeds
Add captions in the new language straight from Language Swap, or open Captions to transcribe any clip, fix words, and burn them in with Bold, Clean, Highlight, Backdrop, Minimal or Karaoke styles at the top, middle or bottom.
Dubbing, lip-sync and captions in one place
Listen on the go.
Turn docs and notes into natural audio, in many voices or your own.
Turn any recording into notes.
Upload a meeting or lecture and get a timestamped transcript you can summarize in one click.
Use the best model for each job.
GPT, Claude, Gemini, Grok, DeepSeek and more in one chat. Switch whenever you like.
Build it once. Run it anytime.
Chain models and tools on a visual canvas, from one prompt to a finished promo video.
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Save money and stop switching between apps.
The right model for every job.
Use the latest models from OpenAI, Anthropic, Google and xAI, plus leading open models like DeepSeek, Qwen and Kimi.
Switch any time, even in the middle of a chat.
Everything you expect. Plus 50+ tools on top.
Chat, search, voice and files, plus workflows, schedules, study tools, voice and image tools. One subscription.
- Web search
- Deep research
- Chat with files
- Code sandbox
- Live voice
- Memory
- Image generation
- Video generation
- Workflow editor
- Scheduled tasks
- Image to prompt
- Remove background
- Image upscaler
- Generative fill
- Replace objects
- Text to speech
- Voice cloning
- Speech to text
- Document to podcast
- Quiz generator
- Flashcards
- Mind maps
- AI rewriter
- Humanize AI text
- Translate
- YouTube to blog
- PDF tools
- AI notes
- Whiteboard
- Slides
- FocusOS
15 subscriptions, or one.
The top models, plus image, video and voice tools, in one plan.
Without Zemith
ChatGPT PlusUS$20.00
Claude ProUS$20.00
Google AI ProUS$19.99
SuperGrokUS$30.00
Perplexity ProUS$20.00
MidjourneyUS$10.00
ElevenLabsUS$6.00
Le Chat ProUS$14.99
RunwayUS$15.00
Kling StandardUS$8.80
Gamma PlusUS$12.00
Otter ProUS$16.99
QuillBot PremiumUS$19.95
Photoroom ProUS$12.99
Quizlet PlusUS$7.99
Total if paying separatelyUS$234.70/mo
What Our Users Say
Great Tool after 2 months usage
"I love the way multiple tools they integrated in one platform. Going in the right direction."
— simplyzubair
Best in Kind!
"The quality of data and sheer speed of responses is outstanding. I use this app every day."
— barefootmedicine
Simply awesome
"The credit system is fair, models are perfect, and the discord is very responsive. Quite awesome."
— MarianZ
Great for Document Analysis
"Just works. Simple to use and great for working with documents. Money well spent."
— yerch82
Great AI site with accessible LLMs
"The organization of features is better than all the other sites — even better than ChatGPT."
— sumore
Excellent Tool
"It lives up to the all-in-one claim. All the necessary functions with a well-designed, easy UI."
— AlphaLeaf
Well-rounded platform with solid LLMs
"The team clearly puts their heart and soul into this platform. Really solid extra functionality."
— SlothMachine
Best AI tool I've ever used
"Updates made almost daily, feedback is incredibly fast. Just look at the changelogs — consistency."
— reu0691
Questions, answered
Which languages can I dub into?
Language Swap dubs into 21 languages: Arabic, Bengali, Dutch, English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Marathi, Polish, Portuguese, Russian, Spanish, Tamil, Telugu, Thai, Turkish and Vietnamese. The language spoken in your original clip is detected automatically.
Can the dub keep my own voice?
Yes, for English, Spanish, French, German, Italian, Portuguese, Russian, Japanese and Korean. Turn on Keep the speaker's voice and confirm the voice is yours or that you have the speaker's permission. Other languages are read by a stock voice.
How long can a dubbed video be?
Language Swap takes clips from 2 to 60 seconds, which fits short ads, Reels, TikToks, Shorts and product demos. Background sound from the original is not kept, so add music back afterwards if you need it.
How does Zemith compare with HeyGen for dubbing?
HeyGen is a dedicated avatar and translation platform: Creator is $29/month for 600 credits, 4K export, Veo 3.1 and Seedance 2.5 sit on Pro from $49/month, and Creator cannot buy extra credit packs. Zemith Plus is $15.99/month and puts dubbing, Lipsync, Voice Change and Captions next to Ad Maker, Virtual Try-On, Product Studio, video models and AI chat on one credit balance with an exact quote before every run.
Is it allowed to dub someone else's video?
Only with permission. Before swapping a language you confirm that you are the speaker or have their permission, and that you won't use the result to impersonate anyone or mislead people.
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