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How Kapwing uses AssemblyAI

As published on assemblyai.com. Checked by usedby on Oct 10, 2026.

What happened

Kapwing uses AssemblyAI for transcription and translation in its video editor, relying on precise word timings to support transcript-based trimming, subtitles tied to the video, and word-by-word animations. It switched from a previous API that lacked accurate word timing and foreign language translation.

Summary written by usedby from the source page, in English. The figures are those of AssemblyAI and Kapwing, not ours.

We switched over to AssemblyAI because our previous API didn't have accurate enough word timing or foreign language translations. And foreign languages are actually important for us because we get a lot of users from around the world.

From the page. assemblyai.com

If you have an hour of content, the difference between 99% accuracy and 97% accuracy, it's a lot of time for that person to review.

Joshua Grossberg, CTO, KAPWING. Source

What the story claims, and what we checked

What we compared with the page.

  • The passage quoted aboveCheckedCopied word for word from the page, near the name of Kapwing.
  • Kapwing uses AssemblyAICheckedConfirmed line.
  • The result itselfNot checkedWe quote it; we did not measure it.

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