AssemblyAI pricing
AssemblyAI provides enterprise-grade API service for converting speech to text with real-time speech recognition capabilities.
- Cheapest paid plan
- ₩0$0/mo
- Universal-3.5 Pro
- Free plan
- Yes
- Paid plans
- 3
- Checked Oct 14, 2026
Pricing
3 paid plans, read from the official pricing page. Monthly and annual billing side by side, with what each includes.
| Plan | Monthly | Annual billing | KRW | Included / month | Notes |
|---|---|---|---|---|---|
| Free | $0 | - | ₩0 | 185 prerecorded hours, 333 streaming hours | Sign up without a card, up to 185 hours of pre-recorded audio and up to 333 hours of streaming |
| Universal-3.5 ProCheapest paid | $0 | - | ₩0 | - | Pay-as-you-go $0.21 per hour, no monthly subscription fee, 18 languages |
| Universal-2 | $0 | - | ₩0 | - | Pay-as-you-go $0.15 per hour, no monthly subscription fee, 99 languages |
| Voice Agent API | $0 | - | ₩0 | - | Pay-as-you-go $4.50 per hour, billed by the second |
Free
$0
185 prerecorded hours, 333 streaming hours
Sign up without a card, up to 185 hours of pre-recorded audio and up to 333 hours of streaming
Universal-3.5 ProCheapest paid
$0/mo
- In KRW
- ₩0
- Included / month
- -
Pay-as-you-go $0.21 per hour, no monthly subscription fee, 18 languages
Universal-2
$0/mo
- In KRW
- ₩0
- Included / month
- -
Pay-as-you-go $0.15 per hour, no monthly subscription fee, 99 languages
Voice Agent API
$0/mo
- In KRW
- ₩0
- Included / month
- -
Pay-as-you-go $4.50 per hour, billed by the second
1 USD = 1,323.9 KRW (2026-10-27). Checked on the official pricing page on 2026-10-14. Bold values are monthly-billing prices; taxes and payment fees excluded.
To compare with other tools at your usage, try the AI voice & dubbing calculator.
Capability at a glance
What each tool states on its own pricing page, drawn on one scale. The solid part is what you get with no condition attached.
- API Available
Yes
Compare item by item. A single overall score hides where each tool is actually strong.
What you actually get
Capability facts copied from the official page, each with the line it came from.
- Supported languages
- 99 languages
- Supports 99 languages
- API offered
- Yes
- Pre-recorded Speech-to-Text API
- Free tier
- 185 hours
- free tier includes up to 185 hours of pre-recorded transcription
- Voice Agent API
- $4.50/hr
- $4.50/hr Voice Agent API
- Speaker diarization
- Supported
- Speaker Diarization, AssemblyAI can detect and label different speakers
- Language detection
- Supported
- language detection, formatting, filler words
Interest signals
Collected automatically from public data on Oct 27, 2026.
- Hacker News mentions, last 30 days
- 7
- Show HN: Voice Standard Bench – Open benchmark of LLMs on speech transcripts
Price history
- 2026-10-14Universal-2 overage per unit none → 0.15
- 2026-10-14Universal-3.5 Pro overage per unit none → 0.21
- 2026-10-14Voice Agent API plan added ($0/mo)
- 2026-10-03Universal-2 (Pay as you go) plan added ($0/mo)
- 2026-10-03Universal-3.5 Pro (Pay as you go) plan added ($0/mo)
FAQ
- Is there a free AssemblyAI plan?
- Yes, the Free plan. Sign up without a card, up to 185 hours of pre-recorded audio and up to 333 hours of streaming
- What is the cheapest paid AssemblyAI plan?
- Universal-3.5 Pro at $0/mo (about ₩0). It includes Unlimited credits per month.
- How much does AssemblyAI discount annual billing?
- No annual discount is listed on the official pricing page.
Alternatives in this category
Other tools that do the same job in AI voice & dubbing. Open the calculator to compare them at your usage.
An adults-only AI character chat service operated by 976.ai, LLC, offering live broadcast-style cam screen and voice messages on a token basis.
₩14,500 and up, free plan available
Compare with AssemblyAIAudio and video transcription tool made by AccurateScribe.ai, supporting 134+ languages with speaker identification and subtitle generation, exportable in multiple formats including SRT and VTT.
₩26,500 and up
Compare with AssemblyAI
AddSubtitle$9.90/moVideo subtitle tool by Add Subtitle Inc. with shared credits for adding subtitles, video translation, and voiceover generation, supporting voice cloning.
₩13,100 and up, free plan available
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<a href="https://aiyogeum.com/en/tools/assemblyai"><img src="https://aiyogeum.com/badge/assemblyai.svg" alt="AssemblyAI · Wolmma" height="22"></a>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.
If a price is wrong, write to connect@aiyogeum.com. We check it, correct it, and record the correction in the change log.