AI Subtitle Plugin for Video Editors

A Premiere Pro plugin that turns Whisper transcription into ready-to-use, correctly timed captions for a language or niche the big tools serve badly.

In plain English

Yuval Steuer and Roey Lalazar built Kaps, an add-on for Premiere Pro that turns speech into captions ready to place on the video. The timing matches the moving picture, line breaks read naturally, and right-to-left text works too, a need they first met for Hebrew. Editors pay a monthly plan based on how much audio they transcribe, because fixing caption timing by hand is tedious. The AI does most of the listening, the timing, and the formatting, and billing is handled too. The founders still build the add-on, check timings, and partner with video creators who spread the word.

Automation85%

Startup costNot disclosed

Time to first $Pre-orders at launch

Monthly range*$70,000 /mo

$70K/mo (founders, self-reported in press)

DifficultyHard

SourceTechnori — The Indie Builder Who Beat Adobe to Hebrew Subtitles (Jan 2025) ↗

Operator-Reported

A named, real operator ran this and shared results publicly. The figures are their own.

Not disclosed by the source (bootstrapped, no VC).

The tool stack

OpenAI Whisper ↗

Free (open source) or API per minute

Speech-to-text with word timings.

Adobe UXP / Premiere Pro plugins ↗

Free SDK

Puts captions straight on the editor's timeline.

Stripe ↗

Per-transaction fee

Tiered subscriptions by transcription minutes.

Prices are the vendors' published list prices as researched in Oct 2026 and change often — always check the vendor's pricing page.

Step-by-step setup

Find a caption gap: a language (Kaps started with Hebrew, which Premiere didn't support) or a format (animated short-form captions).
Do the workflow work around Whisper: frame-accurate timing, natural line breaks, right-to-left text, direct SRT import into Premiere.
Sell to video editors through editing influencers. Kaps' first post brought $4,000 in pre-orders in 30 minutes.
Charge tiered monthly plans by transcription minutes.

What's automated vs. the human 15%

The machine does

Transcription, timing and caption formatting
Billing

You still do

Plugin engineering and quality control of timings
Influencer partnerships (Kaps worked with 70–80 influencers)

Overview

Kaps was founded by Yuval Steuer and Roey Lalazar. Technori reported $70,000 MRR, more than $1M ARR and 40,000+ users twelve months after launch, bootstrapped. These are founder-reported figures in press; no revenue dashboard was found.

Kaps is built on Whisper, an open model. None of the sources say whether Kaps runs it on its own GPUs or through an API, so it is tagged frontier to be conservative. A copycat could run Whisper locally.

Costs

Not disclosed. Bootstrapped, no VC.

Realistic income

The first-post pre-order spike ($4,000 in 30 minutes) came from an audience of video editors. Without that distribution, expect a slower start.

Risks

Adobe can ship the missing feature (language support).
Relies on influencer distribution.

*Income figures are illustrative ranges based on public pricing and typical outcomes reported by practitioners, not guarantees. Most new online businesses earn little or nothing at first. Not financial, legal or tax advice.

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