Limits

Free usage and credits

Each account includes 5 hours of free usage, shared by all models. After that, usage is paid from credits you add in the console (Billing, where the prices are listed). Credits added early are used only once the free hours run out; they don’t expire.

A5S Async v1 counts the duration of each completed transcript. Failed jobs are not counted.
AirCaps Diarization-v1 counts the duration of each completed diarization the same way.
A5S Small V2 Streaming counts the audio you stream.
AirCaps Speaker ID-v1 counts the duration of each clip it processes, enrollments and identifications alike. Requests that fail are not counted.
When the free hours and credits are used up, new requests return 402 insufficient_balance, a file that costs more than what’s left fails with insufficient_balance (not charged), and a live stream ends with a session_limit message. Add credits, or turn on auto refill in the console, to keep going.
See what’s left in the console or with GET /v1/account (usage_limit is your free usage).

Defaults

Limit	Default
Asynchronous jobs processing at once (transcripts and diarizations together)	5 (more are queued, first in first out)
Asynchronous jobs waiting in the queue	2,000
Job create requests (`POST /v1/transcripts` and `POST /v1/diarizations` together)	600 per minute
Maximum file duration / size	10 hours / 5 GB (AirCaps Diarization-v1: 6 hours / 5 GB)
Direct upload (`POST /v1/files`)	1 GB (use an upload URL for larger files). One that takes longer than about 2.5 minutes is answered with a `303` redirect to its result: follow redirects, as most HTTP clients do by default
Uploaded files	Usable for 24 hours after upload, then deleted within the next 24 hours; deleting a transcript deletes its file right away
Transcripts and diarizations kept (including failed ones)	30 days, or until you delete them (Data & privacy)
A5S Small V2 Streaming sessions at once	5
Streaming session length	30 minutes; up to 4 hours on request (talk to sales)
AirCaps Speaker ID-v1 clips	0.5 s to 2 minutes (enrollments at least 1 s), up to 100 MB, one per request
AirCaps Speaker ID-v1 speakers	1,000 per account, 20 enrollments per speaker
AirCaps Speaker ID-v1 requests (enrollments and identifications together)	600 per minute
Active API keys	10

Jobs beyond the processing limit wait as queued. Beyond the queue or request-rate limit you get 429 with a Retry-After header. Other endpoints are not rate limited.

Pricing and higher limits

Limits are set per account. For pricing, higher usage limits or concurrency, access to a model, or a dedicated deployment, talk to sales.

Talk to sales

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Guides

Operations

Free usage and credits

Defaults

Pricing and higher limits

Talk to sales

​Free usage and credits

​Defaults

​Pricing and higher limits

Talk to sales

Free usage and credits

Defaults

Pricing and higher limits