Provider pricing
AssemblyAI AI API pricing
AssemblyAI has a directory profile; no complete positive input/output price pair is recorded in the public snapshot. Missing rates must not be interpreted as free access.
Best for
Meeting recorders, call-center analytics, and media teams indexing audio at scale.
Strengths
- Universal-2 ASR — top WER on benchmark datasets
- Real-time streaming with diarization and sentiment built in
- LeMUR — point Claude at any transcript with one API call
- PII redaction, content moderation, and topic detection out of the box
Tracked AssemblyAI models
| Model | Input $/M | Output $/M | Context | Tier | Best for |
|---|---|---|---|---|---|
| Universal-2 | $0.370 | $0 | 0 | Flagship | Speech-to-text: $0.37 per audio hour |
| Nano (STT) | $0.120 | $0 | 0 | Budget | Budget STT: $0.12 per audio hour |
Last updated: · Source: No official pricing URL recorded · Methodology
Frequently asked questions
How much does the AssemblyAI API cost?
AssemblyAI has a directory profile; no complete positive input/output price pair is recorded in the public snapshot. Missing rates must not be interpreted as free access.
Which AssemblyAI model is cheapest?
A cheapest model cannot be established without a complete recorded rate pair.
Does AssemblyAI have cached or batch prices?
No model-specific cached or batch rates are recorded. Consult the provider for eligibility and additional charges.
How often are provider prices verified?
The live pricing table synchronizes stored model records daily; public file snapshots update when the site is rebuilt. Synchronization is not independent provider verification. Snapshot updated 2026-10-31; only explicit per-model dates are verification records.