voice-cloning
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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.
Synthesia Found $4 Billion in the Gap Between PowerPoint and Pixar
The London startup began by making famous faces speak new languages. Its real business arrived when ordinary employees asked for something less glamorous: a way to turn the next PowerPoint, policy update or training manual into video without booking a studio.
Elai Turns the Training Deck Into a Talking Head
Elai gives the dreary slide deck a presenter, a voice and a passport. For learning teams buried in updates and translations, that trade can be genuinely useful - as long as nobody mistakes an avatar for an actor.
Murf Put the Recording Booth in a Browser
Murf turns scripts into finished narration without the microphone ritual. Its cleverest move is serving two very different customers: the team polishing a training video and the developer trying to make a phone bot answer before the silence gets awkward.
Fliki Turns Your Draft Into a Video Assembly Line
Fliki packages scripting, voices, visuals, captions and publishing into one brisk browser workflow. It is built for people with something to say, a deadline approaching, and no desire to spend the afternoon nudging clips around a timeline.
The Voice in the Machine Has Learned to Act
ElevenLabs can narrate a novel, dub a video, transcribe a meeting, score a scene, or answer the phone. The uncanny voice demo grew up into a serious audio workshop - and a bill you should understand before pressing Generate.
Descript Put the Delete Key in Charge of Video
The editor that made a waveform behave like a Word document now records calls, fixes voices, finds clips, and takes instructions from an AI named Underlord. It can save a small team hours, provided the production does not demand frame-perfect control.
The Smart Speaker Grew a Mind of Its Own
OpenHome wants to be the operating system for every device that talks back - open source, running on your own hardware, with 10,000 developers already building the abilities.
The Company That Attacks You Before the Scammers Do
AI made it cheap to clone a CEO's voice and email 10,000 employees at once. Adaptive Security's answer is to run those attacks first - as a drill - and see who clicks.
HeyGen
HeyGen wants to make the camera optional. Its digital twins, translation tools and video agents turn one human performance into a production system that can speak to almost anyone.
Kalpa Labs
Kalpa Labs is a San Francisco audio research lab building a generalist speech model - one system that handles speech-to-text, text-to-speech, voice cloning, and speech-in/speech-out reasoning with the kind of instruction-following and in-context learning that large language models brought to text. Founded in 2025 by ex-Google Assistant ML lead Prashant Shishodia and ex-high-frequency-trading engineer Gautam Jha, the company is a Y Combinator Fall 2025 startup aiming to collapse today's fragmented speech stack into a single, steerable model for developers and voice-agent builders.
Murf AI
Murf AI is a voice technology company that turns text into natural-sounding speech. Founded in 2020 by three IIT Kharagpur friends, it started as a self-serve AI voiceover studio for creators and marketers and has since expanded into dubbing, voice cloning, a low-latency text-to-speech API (Falcon), and conversational voice agents. Murf says its platform is used by more than 10 million people and 300+ Forbes 2000 companies across 190+ countries, offering 200+ voices in 35+ languages.
Speechify
Speechify is the world's largest text-to-speech platform, turning any text - PDFs, books, emails, Google Docs, web pages - into natural-sounding audio. Founded by dyslexic Brown University student Cliff Weitzman and his brother Tyler, the company grew from a personal reading aid into an AI voice empire spanning consumer apps, a voice cloning and dubbing studio for creators, and a text-to-speech API for developers. It serves 50+ million users across mobile, Chrome extension, and desktop, offers hundreds of voices in 50+ languages, and won the 2025 Apple Design Award for Inclusivity.
Kapwing
Kapwing is a browser-based, collaborative video editing platform that uses AI to turn raw clips, transcripts, and ideas into shareable videos. Founded in 2017 by ex-Googlers Julia Enthoven and Eric Lu, it serves millions of creators, marketers, and educators who want to skip the desktop software and just make a video.
Cliff Weitzman
Cliff Weitzman is the founder and CEO of Speechify, the text-to-speech app that reads anything aloud in natural AI voices and now serves over 56 million users in 200+ languages. Diagnosed with dyslexia in third grade, he taught himself English by replaying a Harry Potter audiobook 22 times, then built the software he wished he'd had to keep up with the reading load at Brown University. What began as a personal hack for one dyslexic student became a Forbes 30 Under 30 company and an Apple Design Award winner.
Personal AI
Personal AI (legally Human AI Labs, Inc.) builds an identity-based memory layer and Personal Language Models (PLMs) - compact, individually trained AI models that capture a person's or organization's knowledge, voice, and decision-making. Instead of a single generic chatbot, the platform lets people and enterprises create AI personas trained on their own data, keeping ownership and privacy with the user. Founded in 2020 and based in San Francisco, the company positions its smaller, memory-grounded models as a more accurate, lower-cost, privacy-first alternative to centralized cloud LLMs for sales, healthcare, legal, HR and knowledge work.
Zyphra
Zyphra is a superintelligence research and product company building efficient, open foundation models and a full-stack AI cloud. Best known for its SSM-hybrid Zamba models, the ZAYA1 reasoning family trained entirely on AMD hardware, and the Zonos text-to-speech system, Zyphra argues that frontier intelligence should run cheaply, locally, and outside the walled gardens of a handful of labs. In June 2025 it raised a $100M Series A at a $1B valuation led by Jaan Tallinn.
ElevenLabs
ElevenLabs is an AI research and product company that builds human-like voice technology. Founded in 2022 by two Polish engineers frustrated by badly dubbed movies, it grew from zero to $200M ARR in three years and reached an $11 billion valuation by February 2026. Its platform covers text-to-speech, voice cloning, AI dubbing, conversational agents, and speech-to-text across 70+ languages, used by everyone from independent creators to over 60% of Fortune 500 companies.