✓ AssemblyAI
Speech-to-Text & Voice AI APIs
APIs for real-time and pre-recorded speech-to-text, understanding, and voice agents.
Why we recommend them
AssemblyAI provides developer APIs for transcribing and understanding speech, including real-time and pre-recorded speech-to-text, a speech understanding API, and a voice agent API. It's built for developers and enterprises building voice features into products such as scribes, notetakers, call analytics, and conversational agents, with customers including Zoom and Siro.
✓Free sign-up tier plus usage-based pricing (per-minute API pricing detailed on pricing page)
✓Latest model, Universal-3.5 Pro, available for both real-time and pre-recorded audio
✓Offers self-hosted deployment option in addition to cloud API
What we actually verified
7.5/10 TrustScore—Money-back guarantee verified
✓Free trial available“…ch Benchmarks Security Voice AI infrastructure for builders Sign up free Contact sales Trusted by millions of developers, Assembl”
—Reachable customer service
✓No fine-print return conditions
✓No unrealistic claims detected
Vetted 2026-07-13 · How we vet →
Common questions about AssemblyAI
Is AssemblyAI legit and safe to buy from?
Yes — AssemblyAI passed the WhatiseBrokering.com vetting checklist (try before you buy, no fine-print returns, a real way to reach them, realistic claims only) before being listed. We remove companies that stop meeting the standard.
Can I try AssemblyAI before committing, or get my money back?
Every company in our directory must offer a free trial or, at minimum, a 7-day money-back guarantee from the day your product arrives — with no fine-print return conditions like "unopened" or "original packaging". AssemblyAI met this requirement at the time of vetting.
How do I reach AssemblyAI if something goes wrong?
AssemblyAI publishes a real customer-service contact (phone or email) — that's a listing requirement. If you can't get a response, tell us at [email protected] and we'll review their listing.
Why is AssemblyAI listed on WhatiseBrokering.com?
We discovered and vetted AssemblyAI ourselves. They don't pay us anything — they're listed purely because they meet the standard.
Had a bad experience with AssemblyAI?
This directory only works if every listing keeps earning its place. If AssemblyAI didn't live up to the standard — refused a return, unreachable support, misleading claims, anything — tell us. We'll re-review them against our vetting criteria, and if they're not abiding by our rules, we remove the listing. No exceptions, no pay-to-stay.