OpenMusic AI vs SFX Engine
Official pricing (checked 2026-10-26, 2026-10-26) computed at the same usage levels. 1 USD = 1,323.9 KRW.
- At 100 Songs per month (Typical · 100)
OpenMusic AI- No plan
SFX Engine
- No plan
- One side has a plan that cannot be converted to usage, so no winner is called per band. Compare the monthly prices in the table below.
Monthly cost by usage
Which side is cheaper at light, typical and heavy use. Each cell is the cheapest plan that covers that amount.
| Songs per month | OpenMusic AI | SFX Engine | Cheaper |
|---|---|---|---|
| Light · 20 (20) | No plan | No plan | - |
| Typical · 100 (100) | No plan | No plan | - |
| Heavy · 500 (500) | No plan | No plan | - |
For your exact usage, use the AI music calculator.
At a glance
- Entry prices: OpenMusic AI Starter at $14.99/mo (about ₩19,800), SFX Engine Starter at $10/mo (about ₩13,200).
- At light · 20 usage (20 songs) neither has a public plan that covers it, or the unit cannot be converted.
- At typical · 100 usage (100 songs) neither has a public plan that covers it, or the unit cannot be converted.
- At heavy · 500 usage (500 songs) neither has a public plan that covers it, or the unit cannot be converted.
- OpenMusic AI has a free plan (Free); SFX Engine does not.
Capability comparison
Specs as stated in each tool's official documentation. A blank means that tool does not publish the item.
| Item | OpenMusic AI | |
|---|---|---|
| Commercial useNot allowed → All plans | - | Royalty-free commercial use |
Compare item by item. A single overall score hides where each tool is actually strong.
OpenMusic AI pricing
Openmusic AI is a platform that offers various music production tools on a credit basis, including music generation, lyric writing, song covers, stem separation, vocal removal, and music mastering. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Free | $0 | - | ₩0 | 30 credits | Page shows 30 credits / 15 songs per year (also listed as 2.5 credits per month). Unused credits expire on renewal. |
| StarterCheapest paid | $14.99 | $10.49 | ₩19,800 | 200 credits | Generates 100 songs per month. Monthly equivalent price when billed annually. |
| Hobby | $29.99 | $20.99 | ₩39,700 | 500 credits | Generates 250 songs per month. Most popular plan, with unlimited downloads. |
| Professional | $49.99 | $34.99 | ₩66,200 | 1,200 credits | Generates 600 songs per month. |
| Studio | $129.99 | $90.99 | ₩172,100 | 3,400 credits | Generates 1,700 songs per month. |
Free
$0
30 credits
Page shows 30 credits / 15 songs per year (also listed as 2.5 credits per month). Unused credits expire on renewal.
StarterCheapest paid
$14.99/mo
- In KRW
- ₩19,800
- Annual billing
- $10.49
- Included / month
- 200 credits
Generates 100 songs per month. Monthly equivalent price when billed annually.
Hobby
$29.99/mo
- In KRW
- ₩39,700
- Annual billing
- $20.99
- Included / month
- 500 credits
Generates 250 songs per month. Most popular plan, with unlimited downloads.
Professional
$49.99/mo
- In KRW
- ₩66,200
- Annual billing
- $34.99
- Included / month
- 1,200 credits
Generates 600 songs per month.
Studio
$129.99/mo
- In KRW
- ₩172,100
- Annual billing
- $90.99
- Included / month
- 3,400 credits
Generates 1,700 songs per month.
1 USD = 1,323.9 KRW (2026-10-27). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
SFX Engine pricing
SFX Engine is an AI tool that generates sound effects from a text description of the sound you want. All plans include commercial use. Tool page
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| StarterCheapest paid | $10 | $8 | ₩13,200 | 500 credits | 500 credits per month; annual billing at $96/year, paid upfront |
| Creator | $25 | $20 | ₩33,100 | 4,000 credits | Popular plan; 50% off first month ($12.50); annual billing at $240/year, paid upfront |
| Pro | $90 | $72 | ₩119,200 | 15,000 credits | 15,000 credits per month; annual billing at $864/year, paid upfront |
StarterCheapest paid
$10/mo
- In KRW
- ₩13,200
- Annual billing
- $8
- Included / month
- 500 credits
500 credits per month; annual billing at $96/year, paid upfront
Creator
$25/mo
- In KRW
- ₩33,100
- Annual billing
- $20
- Included / month
- 4,000 credits
Popular plan; 50% off first month ($12.50); annual billing at $240/year, paid upfront
Pro
$90/mo
- In KRW
- ₩119,200
- Annual billing
- $72
- Included / month
- 15,000 credits
15,000 credits per month; annual billing at $864/year, paid upfront
1 USD = 1,323.9 KRW (2026-10-27). Checked on the official pricing page on 2026-10-26. Bold values are monthly-billing prices; taxes and payment fees excluded.
FAQ
- OpenMusic AI or SFX Engine: which is cheaper?
- At light · 20 usage (20 songs) neither has a public plan that covers it, or the unit cannot be converted. At typical · 100 usage (100 songs) neither has a public plan that covers it, or the unit cannot be converted. At heavy · 500 usage (500 songs) neither has a public plan that covers it, or the unit cannot be converted.
- Do OpenMusic AI and SFX Engine have free plans?
- OpenMusic AI has a free plan (Free); SFX Engine does not.
- What are the entry prices of OpenMusic AI and SFX Engine?
- Entry prices: OpenMusic AI Starter at $14.99/mo (about ₩19,800), SFX Engine Starter at $10/mo (about ₩13,200).
How this is calculatedExchange rate, how a plan is chosen, what is excluded, and the disclaimer
How this is calculated
- 1KRW is converted at 1 USD = 1,323.9 KRW as at 2026-10-27. The rate is refreshed daily.
- 2Monthly cost is the monthly-billing price of the cheapest plan that covers the usage entered. Overage is added only where the official page states an overage rate; a plan whose allowance is exceeded with no stated overage is left out of the ranking.
- 3Credit-based tools are converted using the credits-per-unit figure printed on the official page. Tools whose credit cost varies by model, with no official conversion published, are excluded from the ranking and listed separately.
- 4The per-unit price is the plan's monthly price divided by its monthly allowance. Unlimited plans show none, as there is nothing to divide by.
- 5A 원고지 sheet is 200 characters; an A4 page is taken as 1,800 characters at 10pt with 160% line spacing.
- 6Prices are as published by the vendor. VAT, card issuers' foreign-transaction fees and the rate applied on a KRW settlement are excluded. Regional pricing and temporary promotions may not be reflected.
- 7Paying in dollars by card means your issuer adds its own exchange rate and a foreign-transaction fee, typically 1-2% of the amount. That figure depends on the issuer and the moment of payment, so Wolmma cannot know it and does not include it.
Disclaimer
Wolmma is an information site that collects prices from each tool's official pricing page. We may hold an affiliate relationship with a vendor, but we are neither the seller nor its agent.
We verify as carefully as we can, but a displayed price, allowance or conversion may differ from what you are actually charged, because of plan changes, regional policy, promotions or tax. Confirm the final amount on the official page before you pay.
These figures are reference information, not a recommendation or advice to buy. Wolmma accepts no liability for loss arising from a purchase or contract entered into on the basis of this information.
What your card is actually billed will differ from the figure shown, according to your issuer's exchange rate, its foreign-transaction fee and local tax. None of that is within our sight or control, and we accept no liability for it. Payment, refunds and plan changes are a contract between you and the vendor, to which the Company is not a party.
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