Text to speech

AI text to speech is software that converts written words into spoken audio using neural voice models trained on human speech. You type or paste a script, choose a voice, and the system generates narration with realistic pacing, intonation, and emphasis instead of the flat, robotic delivery of older tools. In HeyGen, the narration is built to be used, landing directly in a video project rather than a downloads folder.

Modern neural voices keep a natural rhythm and tone across long passages, which is where older text to speech online tools fell apart. HeyGen's voices carry emotion and emphasis through a full script, sentence stress follows meaning rather than punctuation alone, and delivery stays steady from the opening line to the last with no drift into monotone. If a line still reads flat, adjust its tone or pacing in the editor and regenerate.

Paste your script into the AI video generator, pick a voice by language and style, then generate. The engine reads your text with synced lip movement on an on-screen presenter, and you can rearrange scenes, swap voices, or edit lines before exporting the finished video in HD or 4K. Updating the narration later means editing the script and regenerating, not booking a reshoot.

Audio-only voice tools hand you a sound file and stop there. HeyGen generates the same natural speech, then puts it to work: a realistic presenter can deliver it on camera, captions generate automatically, and the finished piece translates into other languages with the original voice preserved. One platform carries the script from first word to published result.

Yes, creators are running full course businesses on generated narration. Educator Anton Voroniuk reports saving 15.5 hours per week and cutting production costs 40x after switching to HeyGen, while reaching more than 1 million students with AI-narrated lessons instead of studio recordings. The full numbers are in the Anton Voroniuk customer story.

HeyGen offers a free plan, paid plans from $24 per month for individual creators, and custom enterprise pricing for teams that produce at volume. Text to speech voices are part of the core platform rather than a paid add-on, so you can paste a script and hear results before spending anything.

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

Yes. Upload a short recording and HeyGen builds a high-fidelity clone of your voice that can read any script you give it. The clone keeps your tone and delivery consistent across every project, so a year of videos sounds like one continuous narrator — you. Cloned voices also carry 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 across 85% of the Fortune 100, so the output standard is set by commercial production rather than hobby projects. Generated narration ships inside client campaigns, paid courses, and product launches every day.

Yes. The text-based editor in AI Studio gives you direct control over tone, pacing, delivery, and emotion, so you can slow down a key statistic, add weight to a product name, or brighten an intro without touching an audio timeline or waveform. For brand names and technical terms, spelling them phonetically in the script guides pronunciation.

HeyGen handles long-form scripts that would hit character caps elsewhere. A single generation pass produces up to 30 minutes of continuous narrated video with the voice and likeness held steady for the full duration, which covers most courses, webinars, and internal presentations without stitching. For anything longer, split the script into chapters and generate each in sequence.

Yes. Spoken versions open written content to people who struggle with on-screen reading and to anyone who learns better by listening, from commuters to multitaskers. Pairing narration with automatically generated captions covers the reverse case, so viewers who cannot play audio still get the full message.

Yes. The voice library spans accents, ages, genders, and delivery styles within major languages, so a UK-accented explainer and a US-accented ad can run from the same script. Dialect options extend that reach into regional campaigns where a local accent helps build trust.

Yes. Upload a finished video and AI dubbing rewrites the speech in a new language, keeps the original speaker's voice, and syncs mouth movement to the translated audio. Würth Group localized a 65-minute presentation into 8 languages in 4 days this way.