Text-to-speech

AI text-to-speech software converts written words into spoken audio using neural voice models trained on human speech. You type or paste a script, select a voice, and the system produces narration with realistic pacing, intonation and emphasis, rather than the flat, robotic delivery of older tools. In HeyGen, the narration is ready to use and goes directly into a video project rather than a downloads folder.

Modern neural voices maintain a natural rhythm and tone across long passages, which is where older online text-to-speech tools tended to fall short. HeyGen's voices convey emotion and emphasis throughout a complete script, with sentence stress following meaning rather than punctuation alone, whilst delivery remains consistent from the opening line to the last without drifting into a monotone. If a line still sounds flat, adjust its tone or pacing in the editor and regenerate it.

Paste your script into the AI video generator, choose a voice by language and style, then generate your video. The engine reads your text with synchronised lip movements from an on-screen presenter, and you can rearrange scenes, change voices or edit lines before exporting the finished video in HD or 4K. To update the narration later, simply edit the script and regenerate the video rather than arranging another shoot.

Audio-only voice tools provide a sound file and go no further. HeyGen generates the same natural speech, then puts it to use: a realistic presenter can deliver it on camera, captions are generated automatically, and the finished piece can be translated into other languages whilst preserving the original voice. One platform takes the script from the first word through to the published result.

Yes, creators are running entire course businesses using generated narration. Educator Anton Voroniuk reports saving 15.5 hours per week and reducing production costs fortyfold after switching to HeyGen, whilst reaching more than 1 million students with AI-narrated lessons rather than studio recordings. The full figures are available in the Anton Voroniuk customer story.

HeyGen offer a Free plan, paid plans from $24 per month for individual creators, and bespoke Enterprise pricing for teams producing content at scale. Text-to-speech voices are included in the core platform rather than offered as a paid add-on, so you can paste in a script and hear the results before spending anything.

HeyGen generates speech in more than 175 languages and dialects, including regional variants that maintain accurate pronunciation and accents for each market. A single English script can become Spanish, Japanese, Hindi or Arabic narration in the same session, using the same cloned voice throughout. This range covers markets that most voice tools treat as an afterthought.

Yes. Upload a short recording and HeyGen will create a high-fidelity clone of your voice that can read any script you provide. The clone retains your tone and delivery across every project, so a year's worth of videos sounds as though it has one consistent narrator: you. Cloned voices also carry over into translated versions, so dubbed content still sounds like you.

Yes, HeyGen is built for commercial work. More than 85,000 businesses use the platform for marketing, training and sales content, and it is used by 85% of the Fortune 100, so the output standard is shaped by commercial production rather than hobby projects. Generated narration is used in client campaigns, paid courses and product launches every day.

Yes. The text-based editor in AI Studio gives you direct control over tone, pace, delivery and emotion, so you can slow down a key statistic, emphasise a product name or make an introduction sound brighter without editing an audio timeline or waveform. For brand names and technical terms, spelling them phonetically in the script helps guide pronunciation.

HeyGen handle long-form scripts that would reach character limits elsewhere. A single generation produces up to 30 minutes of continuous narrated video, maintaining a consistent voice and likeness throughout. This covers most courses, webinars and internal presentations without the need to join separate clips. For anything longer, divide the script into chapters and generate each one in sequence.

Yes. Spoken versions make written content accessible to people who find reading on screen difficult, as well as those who learn better by listening, from commuters to people juggling several tasks. Pairing narration with automatically generated captions also addresses the reverse situation, ensuring that viewers who cannot play audio still receive the full message.

Yes. The voice library covers a range of accents, ages, genders and delivery styles across major languages, so a UK-accented explainer and a US-accented advert can use the same script. Dialect options extend this reach to regional campaigns, where a local accent helps to build trust.

Yes. Upload a finished video and AI dubbing recreates the speech in a new language, retains the original speaker's voice and synchronises their mouth movements with the translated audio. Würth Group localised a 65-minute presentation into eight languages in four days using this approach.