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# How many Text to Speech requests can I make and can I increase it?

The concurrency limit (concurrent requests running in parallel) depends on the tier you are on.

Below are the current concurrency rates for Text to Speech.

| Plan     | Flash and Turbo models | All other models |
| -------- | ---------------------- | ---------------- |
| Free     | 4                      | 2                |
| Starter  | 6                      | 3                |
| Creator  | 10                     | 5                |
| Pro      | 20                     | 10               |
| Scale    | 30                     | 15               |
| Business | 30                     | 15               |



If you require a higher number of concurrent requests, please reach out to our Enterprise Department directly via [this webpage](https://elevenlabs.io/enterprise). We will be happy to discuss a tailor-made plan that meets your specific requirements.

ElevenAgents and Speech to Text have different concurrency limits:

* [ElevenAgents concurrency limits.](/docs/help-center/product/eleven-agents/how-many-eleven-agents-requests-can-i-make-and-can-i-increase-it)
* [Speech to Text concurrency limits.](/docs/help-center/product/core-capabilities/speech-to-text/how-many-speech-to-text-requests-can-i-make-and-can-i-increase-it)