AudioStack
Agentic AI audio production platform for media and ads
- Category
- Audio & Voice
- Pricing
- No public pricing; custom/enterprise plans via demo request, with a credit-based consumption model reported by reviewers. A free trial/demo is available but the free tier reportedly includes a watermark.
- Best for
- AudioStack is built for agencies, adtech platforms, broadcasters, and publishers that need to produce audio ads, dynamic ad variants, or long-form audio content programmatically at scale — its case studies (hyperlocal ad campaigns, serialized audio fiction, radio sales) reflect enterprise and media-industry buyers.
- Official site
- audiostack.ai
- Last updated
- August 2026
AudioStack (built by Aflorithmic Labs Ltd.) is described on its own site as "the agentic audio production platform for media and advertising," turning a creative brief or raw text into broadcast-ready audio automatically and at scale. Rather than being a single voice generator, it's an orchestration layer that sits on top of 17+ third-party voice and music model providers (ElevenLabs, OpenAI, Google, Microsoft Azure, Amazon Polly, Cartesia, Resemble, WellSaid Labs, and others), giving customers access to 2,600+ voices and over 1,000 sonic assets through one platform. It's aimed squarely at enterprise use cases: radio and streaming ad production, dynamic/personalized ad variants at programmatic scale, embedded audio generation inside other software products, and long-form content like audiobooks and serialized audio fiction.
AudioStack offers its technology two ways: as a self-serve console (app.audiostack.ai) where a team member types a brief and gets broadcast-ready audio without engineering involvement, or as an embeddable API/engine that other platforms integrate directly (a single POST request returns finished, white-labelled audio). Its named products include InstantCreative (self-serve brief-to-audio), DynamicCreative (one asset generating thousands of variants tied to a VAST ad tag), CreativeEngine (the embeddable API layer), and StoryEngine (long-form text-to-audio for audiobooks). The company's customer base — Bloomberg, Omnicom Media Group, Publicis Groupe, Dentsu, Prisa, Global, NewsCorp, Porsche, and PocketFM among its published logos — signals it is built for large agencies, publishers, and adtech platforms rather than individual creators, and it holds SOC2, GDPR, and Content Authenticity Initiative (CAI) credentials reflecting its enterprise/media-industry focus.
AudioStack is built for agencies, adtech platforms, broadcasters, and publishers that need to produce audio ads, dynamic ad variants, or long-form audio content programmatically at scale — its case studies (hyperlocal ad campaigns, serialized audio fiction, radio sales) reflect enterprise and media-industry buyers. It's a poor fit for solo creators, podcasters, or small teams looking for simple self-serve pricing, since AudioStack requires an enterprise sales conversation and is architected around API/embedded integration rather than a lightweight consumer app.
Key features
InstantCreative
A self-serve console where non-technical team members type a campaign brief and receive broadcast-ready audio in minutes, no engineering required.
DynamicCreative
Generates thousands of localized or personalized variants from a single audio asset, delivered through one VAST tag for programmatic ad campaigns.
CreativeEngine
An embeddable API that lets other platforms call AudioStack directly and receive finished, white-labelled audio inside their own product.
StoryEngine
Converts raw text into broadcast-grade long-form audio, used for audiobooks and serialized audio fiction at scale.
Multi-Provider Voice Orchestration
Aggregates 2,600+ voices and 1,000+ sonic assets across 17 providers including ElevenLabs, OpenAI, Google, and Amazon Polly, so users always have a matching voice available.
Custom Voice Cloning & Speech-to-Speech
Supports branded custom voice clones and speech-to-speech conversion for personalized, on-brand audio content.
Enterprise Compliance
Holds SOC2, GDPR compliance, and Content Authenticity Initiative (CAI) alignment, plus IAB membership relevant to ad-industry buyers.
Pricing breakdown
Free / Trial
- Limited evaluation access
- Output reported to include a watermark per user reviews
Enterprise / Custom
- Access to InstantCreative, DynamicCreative, CreativeEngine, and/or StoryEngine
- Credit-based consumption for API/audio generation
- Access to 2,600+ voices across 17 providers
- Dedicated onboarding for agencies/adtech/publishers
Pros and cons
Pros
- AudioStack's client roster (Bloomberg, Omnicom, Publicis, Dentsu, Prisa, NewsCorp, Porsche, PocketFM) indicates it is proven in production at large media and advertising organizations, not just a demo-stage product.
- A published case study reports 24,000+ hyperlocal ads generated in 3 days, and the platform claims up to 90% faster production than traditional audio workflows, which is a concrete efficiency signal for agencies.
- Because it orchestrates 17+ voice/music providers rather than building its own single model, customers get provider flexibility and redundancy instead of lock-in to one voice vendor.
- A G2 reviewer specifically praised how a simple API call replaced manual podcast-style production from blog content, calling it "much much better than browser's simple TTS."
- Offering both a self-serve console and a fully embeddable API means it can serve both non-technical marketing teams and engineering-led product integrations with the same underlying engine.
Cons
- Pricing is entirely opaque on the public site — there's no rate card, so prospective customers must go through a sales/demo process to learn cost, which slows evaluation for smaller teams.
- A G2 review notes the free plan's output carries a watermark, making it hard to properly evaluate real audio quality before committing budget.
- Another G2 reviewer flagged that SDK support is limited to JavaScript and Python, which could be a blocker for teams standardized on other languages.
- The credits-based billing model was described by a reviewer as difficult to map to a simple "per audio" cost basis, complicating budget planning for high-volume users.
- One reviewer noted certain native-language audio packs weren't "up to the mark," suggesting quality can vary by language/voice provider within the aggregated catalog.
What reviewers say
G2 reviews (under the AudioStack/Aflorithmic/api.audio listing) are limited in volume but consistently positive to mixed-positive, praising the API-driven workflow for turning content into audio while noting rough edges in language coverage and free-tier limitations.
Frequently praised
- "I like that it makes it easy for a developer to just make an API call and get the required audio... Much much better than browser's simple TTS."
- "The inbuilt sound effects in the APIs provide the ability to customize the quality of the audio produced through code."
- "Voices are quite natural (at least in Spanish), fees are fair... very easy to integrate."
Frequently criticized
- "The free plan has watermark. So can't test it out properly if one isn't ready to spend."
- "Certain native language audio packs are not up to the mark."
- "SDK just in JavaScript and Python, fee is in 'credits'... can be difficult to charge the costs in a 'per audio' basis to customers."
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Compare →Frequently asked questions
Does AudioStack publish public pricing?
No, pricing is not published on the site; prospective customers need to book a demo and go through a sales process, with billing reportedly based on a credits system.
Who is AudioStack built for?
It's built for agencies, adtech platforms, radio and streaming publishers, and brands that need programmatic, scalable audio production, not individual creators.
How many voices does AudioStack offer?
It provides access to 2,600+ voices and more than 1,000 sonic assets aggregated across 17 voice/music providers, including ElevenLabs, OpenAI, Google, and Amazon Polly.
Can AudioStack be embedded into another product?
Yes, its CreativeEngine product is an API that other platforms can call directly to generate white-labelled audio inside their own product without users leaving the flow.
What company operates AudioStack?
AudioStack is operated by Aflorithmic Labs Ltd., as noted in the site's copyright footer.
Is there a free way to try AudioStack?
A demo/trial is available, though a G2 reviewer noted that free-tier output includes a watermark, limiting full evaluation before purchase.
Ready to try AudioStack?
Head to the official site to explore pricing and start a free trial where available.
Visit AudioStack →