AI Caption Generator — speech to styled captions in 10 looks

Kenerate's is not free, but you can try it without paying: new accounts get starter credits to try it, and no subscription is required. After that, Auto Subtitles is priced by clip length in tiers up to 4 minutes, and 1080p costs more than 720p. Failed runs are refunded automatically, and the captioned video has no watermark.

Accuracy depends mostly on the audio: one clear speaker, quiet background music and a pinned spoken language give the cleanest captions. Kenerate's captions can't be edited after they are generated, so if a word comes out wrong, run the clip again with the language pinned or with cleaner audio. Heavy accents, crosstalk and loud music cause most mistakes.

Use Simple or Plain for interviews and tutorials, Rizz or Glide Pop when you want the spoken word highlighted, Glass for bright and busy backgrounds, and Whisper or Lowkey for cinematic footage. Terminal suits tech content and Vegas suits nightlife and music. All ten styles can be placed top, middle or bottom, with four levels of text shadow.

No. Kenerate's caption generator writes and times the captions automatically and burns them straight into the video, with no text or timing editor. If you need to correct words by hand, choose a tool with a caption editor, such as those in the comparison above. Here, the best fix is cleaner audio and a pinned spoken language before you run it.

No. The captions are written from what is said, so the tool can't caption a silent clip or one with only music and ambience. Add titles to those in a regular video editor instead. When a clip mixes speech and music, keep the voice clearly louder than the music, because the transcript is only as clean as the voice in the audio track.

Not with the caption generator alone: it captions the language that is spoken and doesn't translate. To put Spanish captions on an English video, first dub the video into Spanish with Kenerate's AI dubbing, which has 33 target languages, then caption the dubbed version. This works for any dub language that Auto Subtitles supports, such as French, German, Japanese or Portuguese.

One MP4 with the captions burned into the picture, at 720p or 1080p HD, with no watermark. The tool shows Original and Captioned side by side so you can check the result before downloading. Because the captions are part of the image, they show on every platform, but viewers can't switch them off and there is no separate subtitle file.