Speechify · Rate Limits

Speechify Rate Limits

The Speechify Voice API enforces per-account limits on synthesis requests and is metered primarily on billable characters. Specific requests-per-minute and concurrency limits vary by plan (Starter, Pay-As-You-Go, Enterprise) and are not published as fixed numbers; the Starter tier additionally caps total characters and audio minutes per period. Per-account values are not reconciled in this artifact.

Speechify Rate Limits is the machine-readable rate-limit profile for Speechify on the APIs.io network, in the API Commons Rate Limits shape.

It captures 4 rate-limit definitions, measuring requests, concurrent_requests, characters, and minutes.

An exhausted limit returns HTTP 429.

This profile was written by API Evangelist and has not been verified against a page the provider published; treat every limit as unconfirmed until a dated transcription replaces it.

The profile also includes 2 backoff/retry policies defined and response codes documented for throttled.

Tagged areas include AI, Text to Speech, Voice, Speech Synthesis, and Voice Cloning.

4 Limits Exhausted: HTTP 429
Method: generated, dated 2026-06-21.
Written by API Evangelist on 2026-06-21 and not verified against a page the provider published. Treat every limit as unconfirmed until a dated transcription replaces it.
View Source
AIText to SpeechVoiceSpeech SynthesisVoice CloningRate LimitingQuotasThrottling

Limits

Requests Per Minute (RPM) account
requests
see provider documentation
Per-account synthesis request rate; varies by plan.
Concurrent Streams account
concurrent_requests
see provider documentation
Concurrent /v1/audio/stream sessions allowed; varies by plan.
Characters Per Period account
characters
50000 on Starter; unlimited on Pay-As-You-Go
Starter free tier caps total billable characters per month.
Audio Minutes Per Period account
minutes
100 on Starter; higher on paid plans
Starter free tier caps total synthesized audio minutes per month.

Policies

Tiered Limits
Limits raise as accounts move from Starter to Pay-As-You-Go and Enterprise plans.
Backoff Strategy
Clients should implement exponential backoff with jitter and honor Retry-After on 429 responses.

Sources

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