AssemblyAI
Voice AI infrastructure for builders
Where people discuss it: Product Hunt ↗
AssemblyAI provides production-ready Voice AI infrastructure for developers, featuring speech-to-text, streaming transcription, guardrails, and voice agent APIs. The platform handles complex audio processing tasks such as language detection, formatting, speaker identification, and medical transcription. It operates on a pay-as-you-go usage pricing model alongside a free trial signup option, with enterprise custom configurations available. Users can integrate these capabilities across various applications through its comprehensive developer API.
- Works on:
- Web, API
What AssemblyAI costs
As printed on assemblyai.com on September 14, 2026
Figures are copied from the vendor's own pricing page, never calculated or converted, and a tier we could not confirm is left out rather than estimated. Pricing changes without notice. Check assemblyai.com before you buy ↗
What changed
All tracked changes →AssemblyAI added the Free plan at free.
· source ↗
AssemblyAI added the Pro plan at $0.21.
· source ↗
AssemblyAI added the Enterprise plan at custom pricing.
· source ↗
AssemblyAI added the Pay as you go plan at custom pricing.
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AssemblyAI added the Custom plan at custom pricing.
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Recorded when a weekly re-read of the vendor's pages finds a tracked figure has moved. It says what the pages showed on two dates and nothing about why.
Compare AssemblyAI
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All AssemblyAI alternatives
A tool we have an affiliate relationship with. Not a recommendation over AssemblyAI.
- Repurposing podcast and video recordings into social posts, newsletters, and blogs
- Content teams and agencies managing multi-brand client media pipelines
- Transcribing and summarizing meetings, webinars, and sales calls
What AssemblyAI does well
- ✓ Building real-time voice agents
- ✓ Transcribing pre-recorded audio files with high accuracy
- ✓ Performing call analytics and medical transcription
Key features
- Pre-recorded and real-time streaming speech-to-text transcription
- Speaker diarization to segment utterances by speaker
- LLM-powered Speech Understanding and LLM Gateway
- Custom keyterms prompting and Medical Mode for specialized terminology
People also ask
What models does AssemblyAI offer for transcription? +
AssemblyAI offers flagship models such as Universal-3.5 Pro for both async and realtime audio, as well as Universal-2 supporting 99 languages.
What additional features are available for speech-to-text APIs? +
Available add-ons include keyterms prompting, plain language prompting, speaker diarization, and an optimized Medical Mode.
How can I deploy AssemblyAI models? +
AssemblyAI supports deployment options through its Voice AI Cloud as well as self-hosted infrastructure.
Is AssemblyAI free? +
Yes. AssemblyAI has a free plan. Paid plans start at $0.02 usage-based.
How much does AssemblyAI cost? +
AssemblyAI lists 11 plans: Free, Speaker Diarization at $0.02 usage-based, Keyterms Prompting at $0.05 usage-based, Prompting at $0.05 usage-based, Universal-2 at $0.15 usage-based, Medical Mode at $0.15 usage-based, Universal-3.5 Pro at $0.21 usage-based, Pro at $0.21 usage-based, Pay as you go (custom pricing), Custom (custom pricing), Enterprise (custom pricing).
What platforms does AssemblyAI run on? +
AssemblyAI runs on Web, API.
At a glance
- Free trial
- Not listed
- Team plan
- Yes
- Open source
- Not listed
- Self-hostable
- Yes
- Capabilities
- speech-to-text transcription speaker-identification developer-api
- Also listed in
- AI meeting notes tools → AI voice and speech tools →
Added to the catalog
Under review since : our re-check against assemblyai.com did not confirm every detail below (contradicted by source; contradicted by source; contradicted by source; contradicted by source; contradicted by source). Check the vendor before you buy. How we check.
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Pricing & Product Hunt
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