Onepin
Fix the mispronounced names and prices in your AI voiceover, line by line.
Overview
Every TTS user knows the ritual: generate the whole take, hear it say your CEO's name wrong, re-render everything, hope. Onepin treats voiceover as a production pipeline instead. It validates every line against quality scores and fixes the failures without redoing the good parts.
Because it is provider-agnostic, you are not locked to one voice vendor, and it benchmarks engines per language. It was number one on Product Hunt on its launch day in October 2026.
Key Features
Routes each line to a suitable model across 30+ TTS providers
Cleans addresses, prices, dates and abbreviations before synthesis
4-million-word pronunciation dictionary for brands, medical terms and names
Scores output on naturalness, word accuracy, clarity and pronunciation
Auto-fixes failing lines and regenerates single words or lines
Commercial use rights on all plans
Pricing
Starting price
$16/mo (billed yearly)
Read from onepin.ai/pricing on 13 October 2026. Prices shown are per month billed yearly (20% off).
Free - $0. 1,000 one-time credits (about 15 minutes of validated audio), 1 workspace, 1GB storage.
Creator - $16/mo billed yearly. 3,000 credits a month (about 100 minutes), 3 concurrent runs, 100GB storage.
Studio - $80/mo billed yearly. 15,000 credits a month (about 9 hours), 3 workspaces, 500GB storage, email and Slack support.
Scale - $240/mo billed yearly. 50,000 credits a month (about 30 hours), 5 workspaces, 1TB storage, 10 concurrent runs.
Enterprise - custom. Pooled credits, unlimited workspaces and seats, SAML SSO, DPAs, BAAs, SOC 2 reports, 99.9% SLA.
Overages cost $0.007 to $0.010 per credit depending on tier. No credit rollover on self-serve plans. All plans include output ownership and commercial use.
Unconfirmed: month-to-month (non-annual) prices are not stated on the page.
Pros
Targets the real annoyance: wrong names, prices and dates in otherwise good audio
Provider-agnostic across 30+ engines
Free plan to try it, and commercial use rights on every plan
Per-line fixes save credits compared with re-rendering whole takes
Annual billing saves 20%
Cons
Brand new with no independent reviews, so the accuracy claims are unproven
Credits do not roll over on self-serve plans
Quality scoring is the company's own; there is no outside benchmark
Free plan is 1,000 one-time credits, about 15 minutes of audio
Listed monthly prices assume annual billing; the month-to-month price is not shown
Overages run $0.007 to $0.010 per credit once you burn through your allowance
What Makes It Unique
Other tools make a voice. Onepin audits the voice, catching mispronounced names and numbers per line across any major provider.
Kay Score
6.5
/ 10
