AI voices sound human now. But they still guess names from the spelling, and nobody has time to listen to every line. Onepin runs on the voices you already use (ElevenLabs, OpenAI, Google, 30+ more), spells out prices and dates, checks names against a 4M-word pronunciation dictionary, scores every line, and fixes the wrong word without re-rendering the take. Built for teams shipping AI voiceover in several languages: product videos, dubbing, courses. Free to start, no credit card required.
Hey Product Hunt 👋 SB here, founder of Onepin. Thanks @rohanrecommends for hunting us.
A great AI voice reads "Porsche Taycan" as TAY-can. Porsche says TIE-kahn. It guessed from the spelling, and nobody caught it, because nobody listens to line 1,200.
We spent two years at Podonos measuring how AI voices sound, with 150,000 human listeners doing the rating. The models solved delivery. What kept failing was names, prices and dates, and the only check most teams run is a person with headphones.
Today we're launching Onepin, the production step after text-to-speech. It runs on the voices you already use, ElevenLabs, OpenAI, Google and 30+ more, and checks every line before it ships.
Here is what it does to every script: 🔢 Spells out prices, dates and abbreviations before the voice reads them. 📖 Checks names, brands and drug terms against a 4-million-word pronunciation dictionary. 📊 Scores every line for naturalness, clarity, word accuracy and pronunciation, against a bar you set. 🔧 Fixes the one wrong word in the same voice, without re-rendering the take.
Two decisions we made on purpose. Onepin checks how a name was said, not just what the transcript spells. And there is no box where you type phonetic spellings: the dictionary and the fix do that work, so your script stays as written.
Built for anyone shipping AI voiceover at volume: product videos, ads, explainers, dubbing, audiobooks, courses, and platforms that put a voice in front of millions of users. API, SDK and MCP from day one. SOC 2 Type II.
You keep your voice. Onepin makes sure it says the right words.
Free to start, no card: onepin.ai. You can run one line on the homepage without an account.
Try it and tell me what's missing, here or at [email protected]. We'll be in the comments all day, answering questions and running your lines. 🚀
🎁 LAUNCH SPECIAL: 20% off for Product Hunt users through October 31. The code is under the 20% off badge above.
One question for you: what's the word your AI voice keeps getting wrong? Run it on onepin.ai (free, no card), switch the run to shareable, and paste the link below so everyone can hear the before and after. I'll reply to every one. No time to sign up? Drop the word and I'll run a few today.
Being able to catch and fix those small mistakes without re-rendering everything sounds genuinely useful, especially for teams producing content in multiple languages.
Congrats, Soohyun. I ship short product videos with AI voiceover and the pronunciation check is the step I do by ear today, so I will try this. Thanks a lot.
Any suggestions if I am already using ElevenLabs?
the naming problem is real, we deal with the same thing on live calls at Dial. the difference for us is latency, we can't check and re-render before the line ships because there's no "before" at all, it's a live turn. is Onepin scoped to pre-rendered scripts where you have time to check first, or could the pronunciation dictionary and scoring run fast enough to sit in a live TTS path too
@soohyun Great to see a tool that focuses on accuracy, not just voice quality. Does it support multiple languages?
Getting names, prices and dates pronounced correctly is the small detail that makes AI voiceovers usable in real work, since a garbled client name is an instant give away. Checking against a four million word pronunciation dictionary and scoring each line is a thorough way to catch the misses. Does it let you save the corrections so the same name is right next time?
Which experience inspired you to create this tool: some particular name that got mispronounced during an actual project? It would be great to know the backstory! Btw, Congratulations @soohyun and @rohanrecommends ✌️
I have been testing the date and currency conversion feature on a staging script, super clean execution!
does it integrate directly into Premiere or DaVinci via a plugin or is it web dashboard only for now?
Can users correct it once so it remembers that pronunciation for future voiceovers?
Congrats @soohyun & team!
Thanks for sharing @rohanrecommends :)
I usually hate having to listen through every line of AI voiceovers for errors so the line scoring feature is a huge time saver for our team.
Passed this straight to our video editor we do a lot of multilingual dubbing and localized numbers always ness up the takes.
am super curious about the pricing logic,does fixing one word count as a full re render credit or just a fraction?
We literally re-rendered an entire 10 minute course video last week just because the AI butchered one founders name haha wish i saw this earlier.
does it automatically detect accents when fixing a single word o do we need to manually adjust the pitch?
The drug terms in the 4M-word dictionary caught my eye. I'm building a voice AI that phones elderly parents every day, and the failures that hurt trust most are exactly this kind: a medication name or a family member's name said slightly wrong, and an older listener stops believing the call is from someone who knows them. Question: does the pronunciation check work on short, live-generated lines (a few seconds, no time to re-render), or is it designed for batch scripts like videos and courses? And can a user pin a custom name, like a grandchild's, so it is always said right?
@soohyun Voice AI checking names and prices before speaking sounds really useful for avoiding mistakes
About Onepin on Product Hunt
“AI voiceover with every name, price and date said right”
Onepin launched on Product Hunt on October 10th, 2026 and earned 326 upvotes and 43 comments, earning #2 Product of the Day. AI voices sound human now. But they still guess names from the spelling, and nobody has time to listen to every line. Onepin runs on the voices you already use (ElevenLabs, OpenAI, Google, 30+ more), spells out prices and dates, checks names against a 4M-word pronunciation dictionary, scores every line, and fixes the wrong word without re-rendering the take. Built for teams shipping AI voiceover in several languages: product videos, dubbing, courses. Free to start, no credit card required.
Onepin was featured in Developer Tools (520.9k followers), Artificial Intelligence (480.7k followers) and Audio (2.2k followers) on Product Hunt. Together, these topics include over 219.4k products, making this a competitive space to launch in.
Who hunted Onepin?
Onepin was hunted by Rohan Chaubey. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Onepin stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Rohan Chaubey
Hey Product Hunt 👋 SB here, founder of Onepin. Thanks @rohanrecommends for hunting us.
A great AI voice reads "Porsche Taycan" as TAY-can. Porsche says TIE-kahn. It guessed from the spelling, and nobody caught it, because nobody listens to line 1,200.
We spent two years at Podonos measuring how AI voices sound, with 150,000 human listeners doing the rating. The models solved delivery. What kept failing was names, prices and dates, and the only check most teams run is a person with headphones.
Today we're launching Onepin, the production step after text-to-speech. It runs on the voices you already use, ElevenLabs, OpenAI, Google and 30+ more, and checks every line before it ships.
Here is what it does to every script:
🔢 Spells out prices, dates and abbreviations before the voice reads them.
📖 Checks names, brands and drug terms against a 4-million-word pronunciation dictionary.
📊 Scores every line for naturalness, clarity, word accuracy and pronunciation, against a bar you set.
🔧 Fixes the one wrong word in the same voice, without re-rendering the take.
Two decisions we made on purpose. Onepin checks how a name was said, not just what the transcript spells. And there is no box where you type phonetic spellings: the dictionary and the fix do that work, so your script stays as written.
Built for anyone shipping AI voiceover at volume: product videos, ads, explainers, dubbing, audiobooks, courses, and platforms that put a voice in front of millions of users. API, SDK and MCP from day one. SOC 2 Type II.
You keep your voice. Onepin makes sure it says the right words.
Free to start, no card: onepin.ai. You can run one line on the homepage without an account.
Try it and tell me what's missing, here or at [email protected]. We'll be in the comments all day, answering questions and running your lines. 🚀
🎁 LAUNCH SPECIAL: 20% off for Product Hunt users through October 31. The code is under the 20% off badge above.
One question for you: what's the word your AI voice keeps getting wrong? Run it on onepin.ai (free, no card), switch the run to shareable, and paste the link below so everyone can hear the before and after. I'll reply to every one. No time to sign up? Drop the word and I'll run a few today.