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Fluen AI Subtitle Generator vs SmartSub

Both stand on ai video caption generators. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Fluen AI Subtitle Generator

Free plan APIExtensionMac+2

Fluen combines subtitle editing, translation, varied exports, and integration options. The free tier allows processing but not exporting, so users who need finished subtitle files or captioned video need a paid plan.

Visit Fluen AI Subtitle Generator

SmartSub

Free plan Open source APILinuxMac+1

SmartSub combines subtitle creation, editing, dubbing, and rendering in a free desktop app. Use local processing for files you want to keep on-device; the maker advises against cloud transcription for sensitive content.

Visit SmartSub

The facts

Fluen AI Subtitle GeneratorSmartSub
Free planYesYes
Open sourceNot publishedYes
Runs onAPI, Extension, Mac, Web, WindowsAPI, Linux, Mac, Windows
Lowest paid planSee the plansFree or on request
Plans published61
MakerNot publishedNot published
Websitefluen.aigithub.com
On ai video caption generators#6 of 99#2 of 99

Fluen AI Subtitle Generator: what it does well

  • Accepts common audio and video formats
  • Translates subtitles into more than 50 languages
  • Supports batch processing and shared workspaces
  • Offers subtitle files and burned-in video exports

What to know first

  • Free exports require a paid plan
  • Free files are limited to 90 minutes each
  • Free media retention is 30 days

SmartSub: what it does well

  • Free local processing has no usage limits.
  • Offers five selectable transcription engines.
  • Provides 20 translation services.
  • Can render subtitles with dubbed audio.
  • Supports Windows, macOS, and Linux.

What to know first

  • Cloud transcription uploads audio to the configured provider.
  • Cloud services may incur separate charges.

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