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Async 🆕 New

by Async · Audio & Voice

Low-latency text-to-speech API for voice apps & agents · 15 languages · Pipecat, n8n & LiveKit integrations · 24/7 SLA.

83/100AIVerso score
#4 of 14in Audio & Voice
From $0.50/hr of audio (API)Starting price
NoFree tier
🔗 Try Async →Compare with alternatives →

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At a glance

ProviderAsync
CategoryAudio & Voice
Starting priceFrom $0.50/hr of audio (API)
Free tierNo
API accessYes
Open sourceNo

Key facts

Strengths

API access for developers

Limitations

No free tier

Best alternatives to Async

ElevenLabs v3
ElevenLabs · From $6/mo · free tier — Higher score (95 vs 83)
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Whisper v3
OpenAI · $0.006/min · free tier — Higher score (91 vs 83)
91
Deepgram
Deepgram · From $0.004/min · free tier — Higher score (85 vs 83)
85
AssemblyAI
AssemblyAI · Pay-per-use · free tier — Has a free tier
83
Murf AI
Murf AI · From $19/mo · free tier — Has a free tier
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🔗 Comparisons & guides

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❓ Frequently Asked Questions

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 v3 (95/100), Whisper v3 (91/100), Deepgram (85/100).

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 #4 of 14 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: September 29, 2026.