AI voice production agent that routes, validates, and fixes scripted audio across languages.
Onepin is an AI voice production agent that turns scripts into validated, publish-ready audio. It routes lines across more than 30 commercial text-to-speech models, selecting a model for each line and language, then checks the resulting speech for accuracy, naturalness, clarity, and pronunciation.
The workflow includes text normalization before synthesis, pronunciation handling for difficult names and technical terms, and automatic regeneration or word-level fixes when a line misses the configured quality bar. Onepin supports 10 languages and continuously benchmarks models to inform its routing decisions. It can also translate multilingual scripts through an external translation API.
The product is intended for voice production workflows such as games, audiobooks, advertising, e-learning, film, and scripts containing medical or other specialized terminology. Under its Terms of Service, Onepin assigns the rights it holds in generated outputs to the customer and permits commercial use, subject to underlying providers’ attribution, watermarking and content restrictions. Users remain responsible for complying with those conditions.
Onepin routes script lines across more than 30 commercial TTS models and selects a model per line and language. Its routing uses ongoing cross-language benchmarks rather than requiring users to choose one provider for every script.
The normalizer expands numbers, dates, abbreviations, symbols, addresses, and prices into forms intended to be spoken correctly before synthesis.
A pronunciation system handles difficult names, brands, and technical or medical terms. Onepin describes a 4-million-word dictionary and can correct a missed word or regenerate the line.
Generated audio is scored for word accuracy, naturalness, clarity, and pronunciation. The FAQ also identifies noise as part of the validation checks, and flagged lines can be fixed before delivery.
Onepin supports 10 languages, benchmarks models across languages, and can translate multilingual scripts through an external translation API. Studio and higher plans can use customers’ own TTS provider API keys.
Game teams can submit lines containing unusual names, invented terms, or directional phrasing, then use pronunciation checks and line-level validation before integrating the audio.
Publishers and producers can prepare narrative scripts while using normalization and validation to catch misread numbers, abbreviations, and names across longer passages.
Course creators can generate lessons with dates, figures, scientific vocabulary, and other terms that benefit from pre-synthesis normalization and pronunciation review.
Advertising, film, and travel-media teams can produce versions of scripts in supported languages, with per-line routing and consistent validation across the localized output.
Teams working with medical or specialized terminology can use the pronunciation dictionary and validation workflow to identify potentially unusable reads before publication.
Each line is checked for word accuracy, naturalness, clarity, and pronunciation. The FAQ also lists noise among the validation checks. Lines that fail can be regenerated or corrected before shipping.
Yes. Bring-your-own-key support lets customers use their own TTS provider accounts while Onepin handles routing, validation, and fixing. This is available on Studio and higher plans.
Onepin currently supports 10 languages. The company says it continuously benchmarks models across languages and can prioritize a specific language or locale on request.
The Free plan includes 1,000 one-time credits with no card required. It supports in-app playback but not download or export; exporting audio requires a paid plan.
Subject to its Terms of Service, Onepin assigns the rights it holds in generated outputs to the customer and permits commercial use. Underlying providers may impose attribution, watermarking or content restrictions; users remain responsible for following those conditions. Enterprise agreements may add negotiated IP indemnity.
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