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Acoust

Acoust

Generate ultra-realistic AI voiceovers in 60+ languages, clone any voice, and produce complete videos — all from one browser-based platform, starting free.

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Podcastle AI

Podcastle AI

Record, edit, transcribe, clone your voice, and publish studio-quality podcasts and videos — all in one AI-powered platform, now rebranded as Async.

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Quick Comparison: Acoust vs Podcastle AI

A high-level overview of pricing, key strengths, and use cases to help you choose the right tool fast.

Features
Acoust
Podcastle AI
Quick View
Acoust is a browser-based AI voice generation and content creation platform that converts text into lifelike speech using generative AI LLM technology across 60+ languages…
Podcastle AI — officially rebranded as Async on January 28, 2026, backed by $23.5M from Andrew Ng's AI Fund and Mosaic Ventures — is an…
Pricing
Freemium: Starting at $5/mo
Freemium: Starting at $11.99/mo
Key Strength
• Text to Speech with LLM-Powered Voices — Convert scripts into natural, expressive audio using generative AI language models combined…
• Remote Studio Recording (Up to 10 Participants) — Record interviews, panel episodes, and group sessions with up to 10…
Best For
Acoust is built for creators, trainers, and marketers who want lifelike, multilingual AI voiceovers with advanced controls in a single,…
Podcastle AI (Async) is built for podcast and video creators at every production level — from solo hobbyists launching their…

Detailed Feature Breakdown

Go deeper into the specific capabilities, pros, cons, and integrations of both platforms.

Features
Acoust
Podcastle AI
Overview

Acoust is a browser-based AI voice generation and content creation platform that converts text into lifelike speech using generative AI LLM technology across 60+ languages and regional accents, with dynamic emotion controls, per-sentence audio customization, instant and professional voice cloning, custom AI voice design from text prompts, AI translation, an AI clips tool for short-form video creation, and a built-in video editor — all accessible for free with no credit card required, and paid plans starting at $5/month.

Podcastle AI — officially rebranded as Async on January 28, 2026, backed by $23.5M from Andrew Ng's AI Fund and Mosaic Ventures — is an all-in-one AI studio platform for podcast and video creators, businesses, and developers.

It combines remote studio recording for up to 10 participants, Magic Dust AI audio enhancement, AI noise and filler-word removal, voice cloning (Revoice), text-to-speech with 1,000+ voices in 15+ languages, AI video generation (Kling v3, Sora 2, Veo 3, Minimax), AI dubbing and lipsync, AI subtitles, AI clips and reframing, podcast hosting, and a developer TTS API — all in one credits-based platform available on web and iOS. It is SOC2 certified and GDPR compliant with 5 published plans from Free to Business.

Key Features

• Text to Speech with LLM-Powered Voices — Convert scripts into natural, expressive audio using generative AI language models combined with neural TTS; supports 60+ languages and regional accents including US, UK, Australian, Indian English, French Canada, Arabic UAE and Saudi Arabia, Hindi, and more.

• Dynamic Emotion Controls — Apply emotion directives — excitement, sadness, anger, calmness, terror, and additional styles — at the sentence or phrase level to shape vocal delivery beyond a flat, uniform output; available on Starter plan and above.

• Advanced Voice Customization — Fine-tune every voiceover with per-word Emphasis (stress on specific syllables), Pitch adjustment for emotional phrases, custom Pause lengths between sentences, Pronunciation override using alternative spellings, and playback Speed control.

• AI Voice Cloning (Instant and Professional) — Instant Cloning creates a reusable voice clone from a few minutes of audio immediately, starting at $1; Professional Cloning uses 30+ minutes of audio for maximum fidelity, delivered after fine-tuning over several days.

• Custom Voices from Text Prompts — Generate a completely new AI voice by typing a description — "warm conversational narrator", "energetic TikTok creator", or any persona — powered by GenAI LLM technology, with no audio sample required.

• AI Translation — Convert any script into 60+ languages instantly, enabling creators and marketers to produce multilingual content from a single source script without a translator or separate localization tool.

• AI Clips (BETA) — Automatically identify the highest-engagement segments from long videos and convert them into short-form clips with multiple auto-subtitle styles — purpose-built for YouTube Shorts, Reels, and TikTok repurposing.

• Video Editor (BETA) and Document Listening — Edit finished videos directly inside the platform without third-party software; upload .docx or text files to convert documents, articles, and training materials into listenable audio at adjustable playback speeds.

• Remote Studio Recording (Up to 10 Participants) — Record interviews, panel episodes, and group sessions with up to 10 remote participants on locally recorded separate audio and video tracks, ensuring studio-quality output regardless of internet bandwidth disruptions during the live session.

• Magic Dust AI Audio Enhancement — One-click AI processing that cleans any audio or video recording to broadcast-quality sound, combining AI Noise Removal, AI Auto Leveling, AI Silence Removal, and Filler Word Detection in a single automated post-production workflow.

• Revoice Voice Cloning — Create a digital clone of your own voice by recording a 10-minute sample; use the clone to generate spoken audio in your exact voice just by typing text — enabling you to fix mistakes, fill gaps, or create narration without re-recording a single word.

• Text-to-Speech with 1,000+ AI Voices — Generate audio in 15+ languages using 1,000+ AI voices directly from typed or pasted text; all paid plans include expanded character limits ranging from 120K characters (Essentials) to 2M characters (Teams) per month.

• AI Video Generation (Kling v3, Sora 2, Veo 3, Minimax, and more) — Generate professional AI video using the most advanced publicly available video models — including Kling v3 Pro, Sora 2, Veo 3 with audio, Minimax Hailuo-02 Pro, Seedance, and Wan 2.6 — all accessible via a credits-based system from the same dashboard used for recording and editing.

• AI Clips, Subtitles, Dubbing and Lipsync — Automatically generate social media clips (1 credit/min), add AI-generated subtitles in 70+ languages (1 credit/min), and dub your content into other languages with synchronized lipsync — covering every major content repurposing and localization use case from one platform.

• Podcast Hosting and Publishing — Host your podcast on a dedicated Async/Podcastle page and publish to all major podcast networks (Apple Podcasts, Spotify, and others) with unlimited episode publishing included as part of cloud storage on every plan.

Pros
  • Permanent free plan with no credit card required lets creators fully evaluate TTS, voice previewing, and platform layout before spending anything
  • Generative AI LLM technology layered on neural TTS produces more contextually natural output than platforms using neural TTS alone
  • Starter plan at $5/month is among the most affordable commercial-licensed TTS tiers in 2026, covering 50,000 characters and dynamic emotion voices
  • Custom voice design from text prompts requires no sample audio — a unique capability that lets anyone build a branded voice persona without recording
  • Two-mode voice cloning (Instant from a few minutes, Professional from 30+ minutes) accommodates both fast content workflows and high-fidelity production projects
  • All-in-one workspace with TTS, video editor, AI clips, translation, and document listening eliminates the need to switch tools during a production session
  • Verified enterprise customers including a global training firm (Smart Group LLC) report cutting video production time from 5 weeks to 1 week using Acoust
  • Magic Dust AI audio enhancement, noise removal, silence removal, filler word detection, and auto leveling are all included on the free Basic plan — a professional audio post-production toolkit at zero cost
  • Revoice voice cloning is included on the Pro plan at $23.99/month — a feature that dedicated voice cloning tools charge $30–$50/month to match
  • AI video generation using Kling v3, Sora 2, Veo 3, Minimax, and Seedance models is accessible from the same dashboard as your recording and editing tools — no separate video AI subscription required
  • SOC2 certified and GDPR compliant across all plans, with encryption at rest and in transit — one of the few podcast platforms with published enterprise-grade security certifications
  • Free Basic plan includes unlimited audio recording, 2GB storage, and podcast hosting — a genuine functional free tier, not a time-limited trial
  • 7-day refund policy on new paid subscriptions with no credit card required to sign up for the free plan
Cons
  • Official YouTube channel has only 2 tutorial videos and 6 subscribers — onboarding and self-learning resources are significantly weaker than competitors like ElevenLabs, DupDub, and VoiSpark
  • AI Clips and Video Editor are both listed as BETA features as of April 2026 — production reliability and feature completeness for these tools are not yet at a stable, final release state
  • No publicly confirmed SOC 2 Type II, ISO 27001, HIPAA, or GDPR compliance certifications found on the official site — a gap for enterprise buyers in regulated industries
  • Voice library size is limited to 100+ voices — significantly smaller than ElevenLabs (10,000+), DupDub (700+), and VoiSpark (700+), reducing variety for high-volume content creators
  • No native mobile app — the platform is entirely web-based with no iOS or Android app for on-the-go audio generation or voice cloning
  • Pricing page does not publicly display plan details inline — confirmed plan features require third-party sources, reducing pricing transparency versus competitors
  • The January 2026 rebrand from Podcastle to Async introduced a new credits-based pricing system that some existing users on Reddit and social media found confusing — particularly around which features consume credits and at what rates
  • AI credits do not roll over month-to-month on subscription plans — unused monthly credits reset at each billing cycle (only Top-Up pack credits carry forward)
  • Video recording on the free Basic plan is limited to 3 hours total (lifetime) and capped at 720p — meaningful video podcasting requires at least the Essentials plan
  • Transcription is limited to 1 hour lifetime on the free plan and 10 hours/month on Essentials — creators with long-form or high-frequency shows need the Pro plan at $23.99/month for 25 hours/month
  • The Teams plan pricing is not publicly listed on the official pricing page — requires checking the platform checkout flow or contacting sales for the per-user monthly rate
Best For

Acoust is built for creators, trainers, and marketers who want lifelike, multilingual AI voiceovers with advanced controls in a single, affordable browser-based workspace.

• Social media content creators (YouTube, TikTok, Reels) — Use dynamic emotion voices and AI translation to produce multilingual voiceovers for short-form content in under a minute; the free plan covers trial use and Starter at $5/month covers commercial publishing.

• Corporate training and e-learning teams — Use consistent AI voices with multi-language output to scale training courses across global offices; Smart Group LLC verified cutting production time from 5 weeks to 1 week using Acoust for multilingual training video distribution.

• Marketers and brand managers — Use the custom voice prompt tool to design a unique brand narrator voice from a text description, then apply it consistently across all campaigns via voice cloning — without hiring a voice actor or scheduling recording sessions.

• Real estate agencies and SMBs — Produce regular property listing videos, product demos, and explainer content with professional AI voiceovers and the built-in video editor, removing the need for separate voiceover and editing software subscriptions.

• Developers and IVR system teams — Replace robotic telephony prompts and system announcements with natural, contextually expressive AI voices in 60+ languages, covering customer support, broadcasting, and voicemail use cases.

Podcastle AI (Async) is built for podcast and video creators at every production level — from solo hobbyists launching their first show to professional teams and agencies producing content at scale.

• New podcasters launching their first show — The free Basic plan includes unlimited audio recording, Magic Dust AI audio enhancement, text-based editing, and podcast hosting at zero cost — a complete first-show toolkit with no subscription commitment.

• Independent podcast and video creators — The Essentials plan at $11.99/month covers weekly audio and video production with 10 hours of transcription, AI subtitles, AI clips, full royalty-free music library, and 20GB storage — replacing multiple single-purpose tool subscriptions.

• Creators who fix recording mistakes without re-recording — Revoice voice cloning on the Pro plan ($23.99/month) is the defining feature for any podcaster who loses takes, flubs sentences, or needs to update outdated information in published episodes without returning to the studio.

• Agencies and media teams — The Teams plan's 3,000 AI credits per user, 1TB storage, unlimited studios, multi-host access, and Producer Mode support professional broadcast workflows across multiple concurrent show productions with team collaboration built in.

Pricing Details

Free ($0/mo): Core TTS access, voice previewing, basic voices, limited monthly characters, no credit card required — personal non-commercial use.

Starter ($5/mo): 50,000 characters/month (~60 min audio), dynamic emotion voices, AI text extraction from PDF documents, 30+ languages, commercial use rights.

Pro ($9/mo): Increased monthly character allowance above Starter, full voice library access, advanced audio customization controls (Emphasis, Pitch, Pause, Speed, Pronunciation), commercial use rights, voice cloning access.

Premium ($29/mo): Highest self-serve character volume, everything in Pro plus maximum concurrent features, priority access, expanded voice cloning capacity, suitable for high-output content studios and agencies.

Enterprise (Custom): Custom character volumes, team and multi-user accounts, dedicated support, custom SLA terms — contact Acoust directly for tailored team solutions.

Basic (Free): $0/month, no credit card required; unlimited audio recording, 3 hours video recording (lifetime), 150 AI credits (lifetime), 1 hour transcription (lifetime), 15 min AI Clips/Subtitles/Reframe (lifetime), 10K Text-to-Speech characters (lifetime), 2GB cloud storage, Magic Dust AI enhancement, noise removal, silence removal, auto leveling, podcast hosting and publishing, limited royalty-free music library, watermark on video exports, no customer support.

Essentials ($11.99/mo monthly | save up to 40% annually): 450 AI credits/month, 10 hours transcription/month, 45 min AI Clips/Reframe/Subtitles/month, 120K Text-to-Speech characters/month (~2 hours), 20GB cloud storage, unlimited audio recording, 8 hours video recording/month, 4K video export, no watermark, full royalty-free music library, unlimited audio exports, Magic Dust + all AI audio editing tools, podcast hosting, email support.

Pro ($23.99/mo monthly | save up to 40% annually): 1,200 AI credits/month, 25 hours transcription/month, 120 min AI Clips/Reframe/Subtitles/month, 300 min AI Dubbing and Lipsync/month, 500K Text-to-Speech characters/month (~10 hours), 120GB cloud storage, 20 hours video recording/month, 4K video export, Revoice voice cloning, AI video generation (selected models), AI image generation (selected models), eye contact correction, dynamic speaker, background remover, cinematic blur, email and live chat support.

Teams ($price per user/mo — check checkout for current rate): 3,000 AI credits/user/month, 100 hours transcription/month, 300 min AI Clips/Reframe/Subtitles/month, 2M Text-to-Speech characters/month (~40 hours), 1TB cloud storage, unlimited recording studios, team collaboration workspace, multi-host access, Producer Mode, branded waiting room widgets, recording studio customization and branding, live chat support.

Business (Custom — Contact Sales): Custom AI credits, custom minutes, custom storage, custom credit Top-Up packs, everything in Teams plus dedicated account manager, custom onboarding, dedicated Slack channel, advanced vulnerability checks, SOC2 certification coverage.

Unique Features

Acoust stands out through a combination of LLM-powered voice fidelity, flexible voice creation modes, and an all-in-one production stack at a price point most platforms can't match.

• Generative AI LLM + Neural TTS Stack — Most TTS platforms run on neural voice synthesis alone; Acoust layers generative AI language model understanding on top, so the output reflects contextual meaning, sentence structure, and intent — not just phonetic rendering — producing speech that reads and breathes more like a real human performance.

• Custom Voice Creation from Text Prompt — No other mainstream TTS platform at this price tier lets you describe a voice in plain language and generate a completely new AI voice from scratch without any audio sample; Acoust's GenAI-powered Custom Voices tool builds bespoke narrator personas from a single text description.

• Two-Mode Voice Cloning at Every Scale — Offering both Instant Cloning (minutes of audio, same-day delivery, starting at $1) and Professional Cloning (30+ min of audio, multi-day fine-tuning) in the same platform lets individual creators and enterprise studios choose the fidelity level that matches their project without switching tools.

• AI Clips BETA for Short-Form Repurposing — The AI-powered clip extraction tool goes beyond simple trim functionality — it uses engagement-prediction insights to identify which segments of a long video are most likely to perform well as shorts, then applies auto-subtitles in multiple style variants, giving creators a complete repurposing workflow inside the voiceover platform.

• Built-In Video Editor Bundled with TTS — The Video Editor BETA eliminates the most common friction point for voiceover users — having to transfer audio into a separate video editing tool — by keeping the entire production cycle (write, voice, translate, clip, edit) inside a single browser tab.

Podcastle AI (Async) stands apart from competing podcast and content platforms through its studio-grade recording infrastructure, voice cloning at a mid-tier price point, and access to the world's leading AI video generation models from the same dashboard used for recording and editing.

• Magic Dust AI Available on the Free Plan — Most podcast platforms reserve AI audio enhancement for paid tiers; Async includes Magic Dust (noise removal, silence removal, auto leveling, filler word detection) on the free Basic plan — giving every creator broadcast-quality audio processing at zero cost.

• Revoice Voice Cloning on the Pro Plan ($23.99/month) — Creating a digital voice clone from a 10-minute recording sample is included on the Pro plan — a feature priced separately at $30–$99/month by dedicated voice cloning platforms like ElevenLabs or Resemble AI, making Async's Pro plan one of the most cost-efficient ways to access studio-quality voice cloning.

• AI Video Generation Using Top-Tier Models in the Same Platform — Access to Kling v3 Pro, Sora 2, Veo 3 with audio, Minimax Hailuo-02 Pro, and Seedance v1.5 Pro through a credits-based system from the same workspace used for podcast recording is a genuinely unique feature combination — no other podcast platform currently gives creators access to the most advanced video AI models without a separate subscription.

• SOC2 Certified with Full Encryption Stack — Async is one of the few podcast and content creation platforms with published SOC2 certification, GDPR compliance, encryption at rest, and encryption in transit across all plan tiers — making it suitable for agencies, enterprises, and teams with formal data security procurement requirements.

Integrations

Acoust operates as a browser-based platform with practical export compatibility across major content creation and distribution ecosystems.

• Direct Export to Social Platforms — Generated audio and edited videos export directly to YouTube, TikTok, and Instagram-compatible formats; the AI clips tool produces short-form clips pre-optimized for vertical video feeds with embedded subtitle styles.

• Document and File Input (.docx, .txt, PDF) — The document listening and AI text extraction features accept .docx, plain text, and PDF file uploads for conversion into audio — making it compatible with training content, articles, e-books, and scripts produced in any standard word processor.

• MP3 Audio Download — All generated TTS audio is downloadable in MP3 format, compatible with every podcast hosting platform, video editor (Premiere Pro, DaVinci Resolve, Final Cut Pro), DAW, and e-learning authoring tool including Articulate Storyline and Adobe Captivate.

• Browser Compatibility (No Install) — The full platform runs in Chrome, Firefox, Safari, and Edge on desktop without any software installation or OS restriction — accessible on Windows, macOS, and Linux machines.

• Enterprise Team Accounts — Custom team and multi-user configurations are available on the Enterprise plan via direct contact, supporting organization-wide deployment with shared workspaces and centralized billing for corporate training and marketing teams.

Async (Podcastle AI) integrates with the distribution platforms, storage providers, and developer infrastructure that podcasters and content teams rely on.

• Apple Podcasts, Spotify, and Major Podcast Networks — Podcast hosting and publishing is built into all plans, with one-click distribution to all major podcast directories from the Async dashboard; episodes publish directly to Apple Podcasts, Spotify, and others without a separate hosting service.

• iOS App — Async is available on iOS for recording and editing, enabling creators to record remote interviews and access AI tools from their iPhone; voice cloning via Revoice is also accessible in the iOS app.

• PayPal and All Major Credit/Debit Cards — All paid plans accept PayPal and major card networks for subscription billing; no credit card is required to create a free Basic account.

• Async Voice API (Developer Integration) — The proprietary Asyncflow TTS model is available via a low-latency REST API for developers building voice-enabled applications including customer support assistants, internal tools, and content automation pipelines; the API uses the same ultra-low latency voice models that rank among the top performers on Hugging Face.

Alternatives
Uberduck
Freemium: Starting at $2/mo
Murf AI
Freemium: Starting at $19/mo
MicMonster
Freemium: Starting at $15/mo
Jellypod AI
Paid: Starting at $25/mo
Castmagic
Free Trial: Starting at $21/mo
Vizard AI
Freemium: Starting at $16.9/mo

Frequently Asked Questions

Expert Verdict

Final Analysis: Which is better?

After testing both platforms: choose Acoust (Freemium: Starting at $5/mo) if you prioritize Acoust is built for creators, trainers, and marketers who want lifelike, multilingual AI voiceovers with.. Choose Podcastle AI (Freemium: Starting at $11.99/mo) if you need Podcastle AI (Async) is built for podcast and video creators at every production level —.. Both are reliable AI tool options, but they optimize for different user profiles.

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