AI subtitles and transcription, human-checked in several languages
Starting costs about $335 in the United States and 75,300 NGN in Nigeria. After 12 months, this business can bring in about $2,010 net per month in the United States and 452,000 NGN in Nigeria. The starting money comes back in about 2 months, with 20 hours of work per week.
Mundyo estimates, data as of 2026-11-02.
See the numbers for my countryFree, no account, in the currency of 243 countries.
The numbers
| Country | To start | Net per month (month 12) |
|---|---|---|
| United States | $335 | $2,010 |
| Nigeria | 75,300 NGN | 452,000 NGN |
| United Kingdom | £208 | £1,420 |
| Kenya | 14,500 KES | 65,400 KES |
| India | 5,300 INR | 47,700 INR |
Amounts adjusted to each country's price and income levels.
The problem
Videos, podcasts, interviews and meetings need subtitles or written transcripts, but automatic tools leave errors in names, numbers and punctuation.
The solution
Produce a first draft with an AI transcription tool, then check everything by ear, time the subtitles and translate them into other languages.
Your customers
Video and podcast creators, online trainers, researchers and students, journalists, companies recording their meetings or training sessions.
How you make money
€1 to €3 per audio minute depending on quality and language, subtitle translation as an extra, monthly packages for regular clients.
Competition
Free or cheap automatic tools, large transcription platforms, freelance subtitlers, clients who correct the text themselves.
Who has an edge
AI does the longest part; the proofreader guarantees correct names, numbers and subtitles in several languages, which tools alone don't.
The risks
Automatic tools getting more accurate, falling per-minute prices, poor-quality recordings, client content to keep confidential.
The first 3 steps
- Test three AI transcription tools on the same recording
- Subtitle a video for a creator for free and show the result
- Publish a simple per-minute price, with translation as an option
How the numbers are calculated
Example in a high-income eurozone country, at month 12: revenue €2,000 − costs €600 = €1,400 net per month. Revenue: 1,000 audio minutes × €1.60 + 4 monthly packages × €100. Costs: AI tool subscriptions, headphones, secure storage, social contributions. For other countries, Mundyo adjusts the starting budget to the price level (World Bank) and the income to prices and customers' purchasing power, then converts at the day's exchange rate.
Frequently asked questions
How much does it cost to start: AI subtitles and transcription?
About $335 (United States), 75,300 NGN (Nigeria), £208 (United Kingdom), depending on the country. Mundyo calculates the amount for 243 countries.
How much can you earn per month?
After 12 months, about $2,010 (United States), 452,000 NGN (Nigeria), £1,420 (United Kingdom) net per month, after costs.
How long until I get my starting money back?
About 2 months, with 20 hours of work per week.
What are the risks?
Automatic tools getting more accurate, falling per-minute prices, poor-quality recordings, client content to keep confidential.
Where do I start?
1. Test three AI transcription tools on the same recording 2. Subtitle a video for a creator for free and show the result 3. Publish a simple per-minute price, with translation as an option
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