voice-api
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Deepdub wants your voice to travel without you
An actor’s voice can cross a border. An invoice can trip up a robot. Deepdub is building a business around the awkward details of making machines speak for people.
The Podcast Company That Outgrew Podcasts
Podcastle began by turning articles into audio. Six years later, it changed its name because the product had become an AI studio, a model switchboard, and a voice API - all before the market finished deciding what a podcast tool should be.
Bandwidth Built the Phone Network Your Software Forgot It Needed
Most communications software companies rent the road. Bandwidth spent decades laying its own - then turned that network into APIs for Google, Microsoft, Zoom and the coming wave of voice AI.
The Quiet Infrastructure Behind 15 Billion Customer Connections
Every OTP, delivery alert and WhatsApp reply looks simple on a phone. CEQUENS has spent 15 years making the carrier routes, compliance rules and software behind those moments disappear.
Sinch
The Swedish company you have never heard of sends the one-time passcodes, delivery alerts and marketing texts that reach your phone billions of times a day. This is how Sinch turned invisible infrastructure into a global business.
Bird
The Dutch company that rebuilt telecom's plumbing now carries a claimed 40% of the world's commercial messages - and spent two years trying to delete Twilio's margins with a 90% price cut. Bird's next bet is that the software placing those calls will be an AI agent, not a marketer.
AVOXI
AVOXI delivers unmatched cloud voice coverage that's orchestrated by software. It's the only platform you'll ever need.
Vonage
Vonage is a cloud communications company that lets businesses and developers add voice, video, SMS, messaging and network-based verification to their apps and customer operations. Once a pioneer of home internet phone service, it reinvented itself as a platform business built on APIs, unified communications and contact-center software, and is now a wholly owned subsidiary of Ericsson operating as its Global Communications Platform.
Twilio
Twilio is a cloud communications company that gives software developers programmable APIs to add messaging, voice, email, video, and authentication to their applications. Founded in 2008 and headquartered in San Francisco, it has grown from a pay-as-you-go SMS and voice API into a broad customer-engagement platform that pairs those channels with Segment's customer data platform and a growing set of AI-driven tools. Twilio is publicly traded on the NYSE under the ticker TWLO and serves developers and enterprises across nearly every industry.
Rime
Rime is a San Francisco voice AI company building human-sounding text-to-speech models for enterprise. Founded by linguists and engineers, its Mist and Arcana models power more than 100 million customer phone conversations every month for brands including Domino's and Wingstop, with sub-200ms response times and pronunciation control designed for production call centers.