Assembly AI

80% of customer data hides in unstructured audio you never touch. That is a revenue leak with a megaphone. AssemblyAI plugs it.

This is speech-to-text and speech understanding built for builders. Ultra-accurate transcription with low word error rate and fewer hallucinations, plus streaming ASR for real-time voice agents. It handles messy, real-world conversations, not just studio podcasts.

You get clean transcripts with automatic formatting, alphanumerics, and speaker diarization so you know who said what. Multilingual support with automatic language detection means your global funnel finally speaks the same data language. Then layer speech understanding to extract topics, sentiment, entities, and insights you can act on.

Test everything in a no-code playground, ship with clear docs and SDKs, pay-as-you-go when you scale. Universal-Streaming and Universal-2 models keep latency low and accuracy high, so your sales bot stops saying huh and your analytics stop lying.

For online business owners, this turns sales calls, support tickets, webinars, and user interviews into searchable, reliable data. Improve conversion by coaching reps with conversation intelligence. Cut churn by spotting support patterns. Repurpose video into SEO content by lunch. Yes, today counts.

Build faster, scale confidently, optimize with real numbers. Hope is not a transcript.

Best features:

Ultra-low latency streaming ASR for voice agents that respond in real time
Industry-leading accuracy with lower word error rate to reduce manual fixes
Speech understanding for topics, sentiment, and entities to surface insights automatically
Speaker diarization to label who spoke when for clear, usable transcripts
Automatic formatting and alphanumerics for publication-ready text
Multilingual transcription with automatic language detection to support global audiences

Turn messy call audio into clean, accurate data you can search, ship, and monetize in days, not quarters.

Use cases:

Sales call analysis and coaching to boost win rates across SDR and AE teams
Support and contact center QA to spot churn risks and reduce repeat tickets
Real-time voice agents and IVR that actually understand callers without awkward delays
Podcast, webinar, and video transcription to create SEO content and captions at scale
Product research from user interviews with searchable notes and highlights
Healthcare and compliance workflows needing accurate, structured transcripts

Suited for:

Founders, operators, and growth teams drowning in call recordings who need accurate, real-time transcription and actionable insights to drive revenue, reduce churn, and ship voice features fast.