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Documentation Index

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Our Streaming STT feature includes automatically scaling concurrency limits. We do not limit the total number of concurrent streaming sessions. Instead, there is only a limit on the number of new streaming sessions that can be created per minute. Anytime you are using 70% or more of your current limit, your new sessions rate limit will automatically increase and scale up by 10% every 60 seconds. As your traffic starts to scale back down and you are using less than 50% of your current limit, your new sessions rate limit will also start to scale back down until it eventually returns to your default value.

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What happens when I exceed my new streaming sessions per minute rate limit?

When you reach your streaming new sessions rate limit, new requests will receive a 1008 error with the message “Unauthorized connection: Too many concurrent sessions”.

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Additional resources

For a more detailed explanation on how automatically scaling concurrency for streaming works, please see our documentation on Streaming Speech-to-Text usage limits.