DupDub vs Synthesys (2026): which should you pick?
As of Nov 12, 2026, DupDub grades higher than Synthesys: 2.2 against 1.8 out of 4.0.
Checked Nov 12, 2026 · graded Nov 12, 2026 by ToolGPA
DupDub grades higher on the free plan and features. They get the same grade on value for money, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
DupDub
AI voiceovers, avatars and video translation in one studio
Which one is for you
Pick DupDub if
- Fits if you want voiceover, avatars and subtitles under one login
- Works for audiobook and podcast makers who want several voices in one file
Look elsewhere if
- Not for you if you want a real free plan, because it is 5 credits for 3 days and personal use only
- Watch out: premium voices cost five times the credits of standard ones, so 150 credits goes less far
- Watch out: the page shows annual prices, and a month-to-month price wasn't readable
- Pricey if you need Business, which has no price on the page
Pick Synthesys if
- Fits if you make voiceovers and video ads for marketing
- Makes sense if you want a few seats and scheduled posting on one bill
Look elsewhere if
- Not for you if you want to try it first, because there is no free plan or trial
- Skip it if you only need voiceover, since the focus has moved toward video ads
- Watch out: refunds end after 3 days and need 25% or less of credits used
- Pricey if you add seats: Agency is $83 a month for 3 seats
How we grade them
| 2.2GPADupDubFair | 1.8GPASynthesysWeak | |
|---|---|---|
| Value for money | C$11 a month billed yearly for 150 credits, which sits in the middle of the category. Professional is $30 and Ultimate $110, and Scale is $3,000 a year. | CStarter is $20 a month yearly ($29 monthly) for 3,500 credits and one seat. That is in the dearer quarter of the category, and Pro is $41 and Agency $83. |
| Free plan and trial | D3 days, 5 credits, personal use only. The listing calls it a free plan, but it works as a short trial. | FNothing free. The pricing page lists no plan or trial, and refunds apply only within 3 days and if you used no more than 25% of your credits. |
| Features | B700+ voices in 90+ languages, cloning, avatars, subtitles, translation, a writing tool and an API from Personal. Credits are shared, and premium voices cost 0.1 credits a second against 0.02 for standard. | CVoiceover and music cost no credits, while video and image generation spend them, with brand kits, autopilot workers and social publishing on higher plans. A marketing job more than a voice job. |
| Ease of use | CNo store rating on record. Several tools in one studio means more to learn than a single text box. | CNo store rating on record. Credits and autopilot workers mean there is something to learn. |
| Platforms and integrations | BWeb, iOS and Android, plus Canva and ChatGPT add-ons and an API. No desktop app listed. | BWeb, with TikTok, Instagram and Facebook publishing listed. No apps. |
| Best for | voiceovers, avatars and subtitles in one account | voiceovers and video ads from one subscription |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: DupDub and Synthesys. How we grade
Price against what you get
DupDub starts at $11 a month and scores 2.7 out of 4 on features, ease of use and platforms. Synthesys starts at $20 a month and scores 2.3.
DupDub scores higher and starts $9 a month lower. Of the other AI voice generators on the chart, 3 score higher than DupDub for less, and 6 score higher than Synthesys for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- DupDub also covers transcription and video editing.
- Synthesys also covers AI agents and video generation.
At a glance
| DupDub | Synthesys | |
|---|---|---|
| Pricing | Free plan | Paid |
| Starts at | $11 per month, billed annually | $20 per month, billed annually ($29 billed monthly) |
| Free plan | 5 credits as a 3-day trial, personal use only, standard voiceovers. | None |
| Free trial | None listed | None listed |
| Web | ||
| iOS | ||
| Android | ||
| Made by | Mobvoi Pte. Ltd. | Nouveau Media Ltd |
| Price read from | dupdub.com | synthesys.io |
| Checked | Nov 12, 2026 | Nov 12, 2026 |
Worth knowing
DupDub
- The page shows annual-billing prices; a month-to-month price was not readable, though the page has a Monthly toggle.
- Credits cover voiceover, avatars and transcription, and premium voices cost more per second than standard ones (0.1 vs 0.02 credits).
- The free plan is a 3-day trial of 5 credits and is for personal use only.
- The Business plan has no price on the page.
Synthesys
- The pricing page lists no free plan or trial; plans are paid from the start.
- Refunds are limited to 3 days after purchase and to accounts that used no more than 25% of their credits.
- Plans are measured in credits that video and image generation spend; the page says voiceover and music never cost credits.
- The product's focus has moved toward video ads, so voice-only buyers pay for tools they may not use.
Key features
DupDub
- Text to speech
- 700+ voices in 90+ languages and accents, with several voices usable in one piece of text.
- Voice cloning
- Instant cloned voices, from 3 on the Personal plan up to 10 on Ultimate.
- AI avatars
- Turns a still photo into a talking avatar; the site says the avatar tool is available on web, iOS and Android.
- Video translation and subtitles
- Transcribes and subtitles video and localizes it into 90+ languages and accents.
- AI writing
- A GPT-powered writing tool drafts scripts and translates text.
- API
- A text-to-speech API is offered; the pricing page lists API access from the Personal plan.
Synthesys
- Text to speech library
- The voice generator page lists 400+ voices in 140+ languages, with a voiceover studio of 20 narrators.
- Voice design and cloning
- Describe a voice to generate it from scratch, or clone one from about 10 seconds of audio.
- Speech to speech
- Converts a recording into another voice while keeping the original emotion, and lets you remix the style of generated audio.
- Video agent
- Takes a brief or product URL and produces a finished video in 11 formats, from UGC ads to TV commercials.
- Brand Kit and publishing
- Pro adds a Brand Kit; Agency adds a winning-ads library and scheduled publishing to TikTok, Instagram and Facebook.
Plans
DupDub
Free$0
3-day trial with 5 credits, personal use only, standard AI voiceovers and 1 GB storage.
Personal$11
per month, billed annually ($132 a year)
150 credits a month (1,800 a year), 3 instant cloned voices, commercial license and API access.
Professional$30
per month, billed annually ($360 a year)
500 credits a month, 5 cloned voices, priority generation and 30,000 characters per voiceover file.
Ultimate$110
per month, billed annually ($1,320 a year)
2,500 credits a month, 10 cloned voices and 10 cloned avatars.
Scale$3,000
per year
60,000 credits a month (720,000 a year) and unlimited storage.
BusinessCustom
Price not shown on the page; the page points to contacting sales for custom plans.
Synthesys
Starter$20
per month, billed annually ($29 billed monthly)
3,500 credits a month, 1 seat and 1 autopilot worker, with full commercial rights. Billed $240 a year.
Pro$41
per month, billed annually ($59 billed monthly)
8,000 credits, 2 seats, 3 autopilot workers and a Brand Kit. Billed $492 a year.
Agency$83
per month, billed annually ($119 billed monthly)
17,000 credits, 3 seats, 10 autopilot workers, ads library and social publishing. Billed $996 a year.
Max$139
per month and up, billed annually ($199 billed monthly)
From 30,000 credits and 5 seats; steps up to 250,000+ credits and 15 seats, with an account manager.
Ways to pay less
DupDub
- Annual discount
25% off with annual billing
The pricing page labels the annual toggle as 25% off.
Synthesys
- Annual discount
Yearly billing saves 30%
Yearly billing is shown at $20, $41, $83 and $139 a month on Starter, Pro, Agency and Max, against $29, $59, $119 and $199 billed monthly.
Common questions
Which is cheaper, DupDub or Synthesys?
As of Nov 12, 2026, DupDub is cheaper to start with: $11 a month, against $20 a month for Synthesys. DupDub starts at $11 per month, billed annually, and Synthesys starts at $20 per month, billed annually ($29 billed monthly).
Which has a free plan, DupDub or Synthesys?
As of Nov 12, 2026, only DupDub has a free plan. Synthesys does not.
Which platforms do DupDub and Synthesys run on?
As of Nov 12, 2026, only DupDub lists iOS and Android apps. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.