Async
Low-latency text-to-speech API for voice apps & agents · #35 on the Artificial Analysis speech arena (Async Flash v1.5) · 15 languages · Pipecat, n8n & LiveKit integrations · 24/7 SLA.
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What is Async?
Async is the new name of Podcastle since January 2026. It combines a creator platform for recording, editing and publishing podcasts and video with a low-latency text-to-speech API for developers building voice apps and agents.
Best for
- Developers who need fast text-to-speech for voice agents
- Podcasters recording and editing in the browser
- Former Podcastle users
Async pricing
Async has no free tier. Price: From $0.50/hr of audio (API).
Looking for something cheaper? ElevenLabs v4 by ElevenLabs costs from $6/mo and has a free tier.
Prices as published by Async. This page was last updated on November 13, 2026; prices and plans change often, so check the provider’s pricing page before you buy.
🔗 Check current Async prices →At a glance
Key facts
- Low-latency text-to-speech API for voice apps & agents
- #35 on the Artificial Analysis speech arena (Async Flash v1.5)
- 15 languages
- Pipecat, n8n & LiveKit integrations
- 24/7 SLA
Async benchmarks
| Leaderboard | Result |
|---|---|
| Artificial Analysis Speech Arena (Async Flash v1.5) | #35 of 104 · Elo 1140 |
Arena results come from blind head-to-head votes on Artificial Analysis (checked November 13, 2026); Elo scores are only comparable within the same leaderboard.
Strengths
Limitations
Best alternatives to Async
🔗 Comparisons & guides
❓ Frequently Asked Questions
What is Async?
Async is the new name of Podcastle since January 2026. It combines a creator platform for recording, editing and publishing podcasts and video with a low-latency text-to-speech API for developers building voice apps and agents.
What is Async best for?
Async is a strong pick for: Developers who need fast text-to-speech for voice agents; Podcasters recording and editing in the browser; Former Podcastle users.
How does Async perform in benchmarks?
Async ranks #35 of 104 on the Artificial Analysis Speech Arena as Async Flash v1.5 (Elo 1140). Arena rankings come from blind head-to-head votes and were checked on November 13, 2026; they change as new votes come in.
How much does Async cost?
Async starts at From $0.50/hr of audio (API). There is no free tier. A cheaper option from another provider is ElevenLabs v4 (From $6/mo).
Is Async free?
No, Async has no free tier. Pricing: From $0.50/hr of audio (API).
What are the best alternatives to Async?
The highest-rated AI audio & voice tools from other providers on AIVerso are ElevenLabs v4 (96/100), Whisper v3 (91/100), Fish Audio (88/100).
Does Async have an API?
Yes, Async can be used via an API.
How does AIVerso rate Async?
Async scores 83/100 on AIVerso and ranks #6 of 17 in Audio & Voice. Scores combine public benchmark results, features and pricing; commissions never influence them.
How we rate: Scores and capability ratings are based on public benchmarks, provider documentation, features and pricing — not on commission rates. Prices can change; check the provider's site before buying. Last updated: November 13, 2026.