For as long as we’ve imagined “the future,” we’ve imagined computers that talk with humans. From the calm, ever-listening computer in Star Trek to J.A.R.V.I.S. in Iron Man, voice-enabled AI has been the centerpiece of sci-fi and a symbol of technological advancement.
Well, that future is now. And voice AI is in the middle of a gold rush.
Voice AI interactions have evolved from clunky text-to-speech tools with voices that sound like robots to new conversational voice AI technology that resembles human speech so closely it’s eerie. We can talk to ChatGPT and get voice responses that feel thoughtful, funny, and authentic. Google’s AI search can now talk to you while searching the web and answer questions like a well-briefed assistant. These voicebots don’t just talk, they converse. They demonstrate that they actually understand what we’re saying while closely mimicking real spoken communication with pauses, inflection, emotion, context, and tone.
And this is only the beginning. Without a doubt, voice is AI’s next frontier. But its progress depends on the quality and integrity of the voice data on which it’s trained.
The real gold? Voice data
What’s powering this new generation of voice AI isn’t just better code—it’s voice data on which voice models are trained. More specifically, it’s massive datasets of high quality and diverse human voices, representing the range of human speech in all its complexity—across languages, dialects, vocabulary, patterns, emotions, inflections, and context.
Now that the industry sees where AI is headed, it’s understanding the mission-critical value of voice data, and everyone wants access to this data. Tech giants and startups are scrambling to collect, license, or build it from scratch. Everyone wants to create the next, most lifelike talking AI, and they need the voice data to fuel it.
This is the voice data gold rush.
But just like the original gold rushes of the 1800s, the current frenzy comes with risk and consequence.
If you don’t have permission, it’s stealing
I firmly believe that to build voice AI the right way, technically and ethically, the data training your voice AI models needs to satisfy three criteria. The data must be
- High quality: Clean, extremely high-fidelity human voice recordings that are free from background noise or distortion, represent diverse voices and speech patterns, and offering rich emotional and linguistic content.
- High volume: Enough data to meaningfully train a model.
- High integrity: Ethically-sourced with clear licenses and proper consent for use in AI training.
Many existing datasets can meet one or two of these requirements. Getting data that hits all three is the hard part.
Don’t take shortcuts
I don’t hear many companies talking about how they’re building AI ethically, or clearly stating the sources or permissions behind the data used to build their voice AI. Yes, they’re able to move fast. Many voice AI startups go to market within months. But when they’re able to produce life-like voices that quickly and with very limited capital, I can’t help but wonder: Where did all their training data come from?
To save time and cut costs, companies are taking shortcuts by scraping audio off the internet, relying on datasets with murky or unknown ownership, or using data that’s licensed for AI training, but fails to meet the quality standards needed to train convincing voice models.
This is the fool’s gold of AI: data that looks shiny, but can’t stand up to legal scrutiny or meet the appropriate quality standards.
The reality is that voice AI is only as good as the data it’s trained on. And if you’re building a voice model meant to reach millions of users, the stakes are high. Your data needs to be clean, consented, licensed, and diverse. Just look at the headlines: “AI voiceover company stole voices of actors, New York lawsuit claims.” Companies are being called out and sued for cloning and using voices without permission.
When you take the unconsented route, you’re not just risking a PR headache; you open the door to lawsuits, reputational damage, and most importantly, you risk a major loss in customer trust.
Build AI that lasts
We’re entering a new era of human-to-computer interaction, one where voice is the default interface. AI that talks will soon become the standard way we shop, learn, search, work, and even forge relationships.
But for that future to be truly useful, human, and trustworthy, we need to build it on the right foundation. We’re still relatively early in the generative AI boom, and navigating the legal landscape around training data rights and licenses is complex. If there’s one thing we know for sure, any lasting, successful AI voice product will rely on quality data obtained the right way.
The gold rush is here. The smart players aren’t just chasing shiny things. They’re building voices that last.
Jay O’Connor is CEO of Voices.com.
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