AssemblyAI

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Speech AI APIs · Vendor site 2026-10-04

AssemblyAI provides speech-to-text, streaming transcription, speech understanding, and voice agent APIs for developers building notetakers, call analytics, medical transcription, and dictation products across many languages.

Updated 2026-10-04View sources

Official website

Category: Speech AI APIs
Free access: Developer signup and playground access are offered; production usage is metered rather than flat monthly SaaS tiers.
API access: Full product surface is API-first with documentation, cookbooks, and SDK resources for pre-recorded and realtime speech.

Is AssemblyAI right for you?

A good fit for

Developers and product teams embedding transcription, understanding, and voice agents into SaaS applications.

Before you choose

Public pricing quotes per-minute and per-feature usage costs instead of named monthly subscription plans.

Voice AI infrastructure

AssemblyAI packages transcription and downstream speech understanding so product teams can ship voice features without building models in-house.

What it can do

Features & capabilities

Unknown is different from unavailable. Each fact carries its own evidence.

Capability	Value	Evidence	Checked
Speech-to-text APIs	Offers pre-recorded, realtime, and sync transcription endpoints.	Facts sourced	2026-10-04
Speech understanding	Speech Understanding API adds guardrails, summarization, and LLM gateway features.	Facts sourced	2026-10-04
Voice agents	Voice Agent and Dictation APIs target conversational and dictation experiences.	Facts sourced	2026-10-04
Language coverage	Marketing lists broad multilingual support including 99 languages page.	Facts sourced	2026-10-04

Understand the total cost

AssemblyAI pricing & plans

Pricing

Not listed

Official monthly price not confirmed

API: Full product surface is API-first with documentation, cookbooks, and SDK resources for pre-recorded and realtime speech.

Explore pricing & history

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The practical questions

Frequently asked questions

What is AssemblyAI used for?

Does AssemblyAI have a free plan?

Developer signup and playground access are offered; production usage is metered rather than flat monthly SaaS tiers.. This record does not confirm an ongoing free plan.

How much does AssemblyAI cost?

A listed monthly price has not been confirmed. See the plan cards for entitlements, billing commitments and seat minimums.

Can I use AssemblyAI through an API?

Full product surface is API-first with documentation, cookbooks, and SDK resources for pre-recorded and realtime speech.. API access and subscription access may have different terms; consult the linked sources.

What should I check before choosing it?

Public pricing quotes per-minute and per-feature usage costs instead of named monthly subscription plans.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Identity and profile

Reviewed vendor source

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2026-10-04

Facts apply to the named version and check date. Send a sourced correction if something changed.