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AudioStack

AI-driven audio production platform with API

Overview

AudioStack.ai builds an AI-powered audio production platform accessed via a customizable API. It converts text into high-quality audio using generative AI, designed for businesses that need scalable, consistent sound across digital media, advertising, video, podcasts, and smart home devices. The API is freemium, offering 250 free credits to try before charging subscriptions on a pay-as-you-go basis for extra credits. This setup lowers barriers to entry and allows customers to pay only for what they use. Compared with competitors, AudioStack.ai emphasizes scalable infrastructure, consistent output, and ease of integration across multiple industries. The goal is to help clients produce high-quality audio quickly and at scale, boosting productivity and giving them a competitive edge in their respective markets.

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About AudioStack

Simplify's Rating
Why AudioStack is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Consumer SoftwareEnterprise SoftwareAI & Machine LearningEntertainment

Company Size

51-200

Company Stage

Series A

Total Funding

$8.5M

Headquarters

London, United Kingdom

Founded

2019

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Simplify's Take

What believers are saying

  • August 2026 Gradium and September 2026 Inworld broaden regional and demographic coverage.
  • AudioStack still reports active hiring, with four open roles indexed in August 2026.
  • Leadership added Alexis van de Wyer and Erik Barraud, strengthening US go-to-market execution.

What critics are saying

  • Voice suppliers like Gradium and Inworld can bypass AudioStack and sell directly.
  • OpenAI and ElevenLabs commoditize synthetic voice quality, shrinking AudioStack's middleware premium by 2027.
  • With roughly 41 employees, one bad enterprise cycle can starve product expansion.

What makes AudioStack unique

  • AudioStack's model-agnostic platform bundles script, voice, music, and sound effects.
  • By September 2026, AudioStack listed nineteen voice, music, and sound partners.
  • Its enterprise workflow removes integration friction when partners like Inworld and Gradium join.

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Funding

Total Funding

$8.5M

Below

Industry Average

Funded Over

6 Rounds

Series A funding typically happens when a startup has a product and some customers, and now needs funding to scale. This money is usually used to grow the team, expand marketing, and improve the product. Venture capital firms are frequently the main investors here.
Series A Funding Comparison
Below Average

Industry standards

$15M
$2.5M
$5M
$8.2M
$15M
$30M

Benefits

  • Hybrid Work Options
  • Flexible Work Hours
  • Stock Options

Growth & Insights and Company News

6 month growth

-1%

1 year growth

1%

2 year growth

4%
ExchangeWire
Sep 15th, 2026
AudioStack adds Inworld to its voice roster.

AudioStack adds Inworld to its voice roster. AudioStack, the agentic audio production platform for media and advertising, has announced Inworld as its newest voice partner, bringing the platform's total roster of voice, music, and sound providers to nineteen. The addition gives customers a wider set of regional and demographic options to draw on from within a single, model-agnostic platform. "Inworld is exactly the kind of partner that makes this platform better, not just bigger. Strong regional coverage, real range across ages - that's the kind of depth we're building toward," said Erik Barraud, CPO at AudioStack. "What stood out with Inworld was the UK accent coverage, paired with a genuinely wide age range across their voices, which gives customers a lot more precision when a brief calls for a specific kind of person, not just a specific kind of sound. That precision matters because voice is personal - the right accent and age in context is often what makes a listener feel like a creative is actually speaking to them, not just at them. That's the kind of connection we want every customer to be able to build." This is one of the quieter benefits of building with AudioStack: the platform keeps expanding, but nothing changes for customers. There's no new contract to sign, no separate integration to build, and no additional setup required when a new partner joins the roster. Customers get more to work with - never more to manage. The partnership gives Inworld a direct route into AudioStack's customer base and its agentic production tools. "Being added as a Voice AI provider puts Inworld voices right where the work happens, and we're glad to be part of it.," said Kylan Gibbs, CEO at Inworld. Inworld's voices are live now on the AudioStack platform. AudioStack said the roster will keep expanding on the same basis - depth and quality over headline count, with regional and demographic range to match, and zero extra work for customers along the way. AudioStack. Quality Audio Fast. AudioStack is the leading enterprise solution for AI audio production. The proprietary technology connects AI-powered media creation forms such as AI script generation, lifelike text-to-speech, speech-to-speech, generative music a... Powered by PressBox

LocReport
Aug 20th, 2026
AudioStack integrates Gradium voices enhancing AI platform.

AudioStack integrates Gradium voices enhancing AI platform. AudioStack, a pioneering AI audio production platform, is significantly enhancing its capabilities by integrating Gradium's diverse voice models into its system. This partnership, announced on August 19, 2026, marks a strategic advancement, enabling AudioStack to expand its offering with higher-quality regional accents and voices that cater to specific market needs. The integration comes at a time when AudioStack's voice catalog already exceeds 1,700 voices, reflecting its robust growth trajectory since its inception in 2019. According to Slator, this move fits into AudioStack's broader strategy of leveraging partnerships to create a more versatile and comprehensive audio production platform. The collaboration with Gradium enriches AudioStack's catalog with voices capable of delivering regionally nuanced and linguistically rich audio content. Alexis van de Wyer, CEO of AudioStack, emphasized his company's admiration for Gradium's ability to provide an extensive range of accents and linguistic nuances. Such an offering is instrumental in supporting customers across various global markets, particularly in areas such as Australia and French Canada. This capability is essential for advertisers and content creators who seek to engage audiences with tailored messaging that feels locally relevant and culturally resonant. As Neil Zeghidour, CEO of Gradium, notes, the partnership facilitates the seamless integration of geographically appropriate voices into production pipelines, helping brands communicate more effectively with their target demographics. Both companies have demonstrated impressive growth and strategic foresight in their fields. AudioStack raised its profile in the industry through a GBP 1m seed round in 2021, followed by a USD 3.1m pre-Series A round in 2024. Meanwhile, Gradium, founded in September 2025, has swiftly amassed USD 100m in seed funding by July 2026. This financial momentum underscores the growing recognition of AI's transformative potential in the audio production landscape. The integration of Gradium's capabilities into AudioStack's platform exemplifies a synergy that not only broadens AudioStack's service offerings but also enhances the efficacy of Gradium's voice models in diverse, real-world applications. In summary, the partnership between AudioStack and Gradium underscores a pivotal evolution in AI-driven audio production. As highlighted by the recent discussion at SlatorCon London, where AudioStack's infrastructure capabilities were showcased, this collaboration signifies a forward-thinking approach to blending robust technological frameworks with innovative audio solutions. This strategic alliance promises to set a new benchmark for quality and customization in AI audio services, advancing how businesses and creators utilize voice technology to forge deeper connections with their audiences worldwide. Intelligence. Notable 6-Month Horizon Why this matters * Enhanced voice offerings improve market competitiveness. * Localized audio content increases audience engagement. * Strategic partnerships drive innovation in audio production. LangTech Vendors Enterprise Buyers Related reading. Keep independent coverage alive. No ads. No paywall. No corporate backing. Just sharp, weekly intelligence on the language industry - free, because it should be.

ExchangeWire
Feb 12th, 2026
AudioStack Names Alexis van de Wyer CEO as Company Accelerates Growth

AudioStack names Alexis van de Wyer CEO as company accelerates growth. AudioStack, the leading enterprise solution for AI audio production, has appointed Alexis van de Wyer as chief executive officer. Founder Timo Kunz will continue leading the company's technology development and product innovation initiatives. van de Wyer brings 25 years of experience as a technology entrepreneur, investor, and operator, with deep experience in digital audio, SaaS enterprise software, and ad tech. He has been an early investor in AudioStack and has previously served as the company's president. Before joining AudioStack, he was the CEO of AdsWizz, the digital audio advertising platform acquired by SiriusXM/Pandora and has held leadership roles at eBay. He has co-founded multiple ventures and serves on several boards, supporting technology startups to scale globally. van de Wyer is based in the San Francisco Bay Area, working across North America and Europe. "We have been seeing strong interest in AudioStack's technology and rapid growth across North America, as companies are looking for AI-native audio production solutions that drive scale and efficiency," said Timo Kunz, founder of AudioStack. "Alexis has the experience and perspective to scale the business globally and especially in the US, while we continue to innovate and empower our customers to transform their production processes with AI." AudioStack further strengthened its leadership team with the appointment of Erik Barraud as chief product officer. Barraud brings over 15 years of experience building and scaling SaaS, audio ad tech, marketplace, and AI products. He previously served as CPO at AdsWizz, leading product strategy across the audio advertising stack. The appointment follows a series of senior leadership additions in the last 12 months that include Silke Zetzsche as VP global commercial partnerships - agency & ad tech, Marsha Fischer as VP publisher partnerships, and Jérôme Noel as head of engineering. "Audio media content is increasingly becoming personalised and contextual, but production at scale remains a bottleneck," said Alexis van de Wyer, CEO of AudioStack. "AudioStack removes that friction through its proprietary AI platform, allowing publishers, brands, and agencies to produce high-quality content at scale, combining voice, music, and sound effects, to deliver content that is tailored to its audience." As part of its expansion, AudioStack has been growing its global presence, working with clients and partners such as iHeart, Publicis Groupe, Acast, OMC, Havas, Octave, and REWE Group. AudioStack. Quality Audio Fast. AudioStack is the leading enterprise solution for AI audio production. The proprietary technology connects AI-powered media creation forms such as AI script generation, lifelike text-to-speech, speech-to-speech, generative music a... Powered by PressBox

AudioStack
Dec 3rd, 2025
AudioStack launches Fast Track Webinar Series

AudioStack launches Fast Track Webinar Series. Want to become an AI Audio expert? Look no further! Welcome to its brand new Fast Track Webinar Series, designed for agencies, brands, adtech vendors, and publishers looking to learn about all things AI Audio. AudioStack Labs Ltd has been cooking up something special for you for 2026... Welcome to its brand new Fast Track Webinar Series - designed for agencies, brands, adtech vendors, and publishers looking to become experts in AI Audio. Whether you're crafting standout campaigns, optimizing programmatic, driving engagement, or scaling content, this series delivers practical insights, from creative execution with AI to navigating compliance and regulation. Its first session, "AI-Powered Audio: The New Frontier for Omnichannel Marketing", explores how AI-powered audio infrastructure is reshaping how teams create, deploy, and optimize content. Moving beyond slow, linear production into an era of agility, automation, and data-driven audio, AudioStack Labs Ltd is unlocking creative possibilities and scale that traditional methods just can't match. * A look at the inefficiencies and hidden costs of traditional audio production. * A deep-dive into the AudioStack and its modular, API-driven approach. * Strategies to deliver dynamic creative and personalization at scale. * Solutions for effective localization, helping global brands engage local markets authentically and effortlessly. * The latest omnichannel activation tactics to ensure your audio content excels across every platform, from broadcast to podcasts, digital radio and retail. * Real-world use cases of how leading agencies, brands, adtech, and publishers are staying ahead. The future of omnichannel marketing is here: faster, smarter, more targeted, and more agile. Join AudioStack Labs Ltd to see how AI-powered audio is fueling creative velocity, driving measurable results, and redefining how marketers communicate at scale. Link: The link will be sent to your email the day before the webinar. Can't make it for the first session? Don't worry, you can still sign up to receive the recording after the session. AudioStack Labs Ltd also have many more planned in 2026 so keep an eye out for its next session coming up in February.

AudioStack
Apr 8th, 2025
Who are ARD Media?

To achieve this, ARD Media partnered with AudioStack to implement AI-driven, dynamic podcast advertising to those using podcast.de to listen to their favourite content.

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