# Limits on Gradio API (HF Spaces)
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**Author:**  [@gblssroman](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fgblssroman)%5C
**Post date:** [March 28, 2025, 10:59am UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Flimits-on-gradio-api-hf-spaces%2F147812%2F1 "2025-03-28T10:59:42Z")
Hi,
I am unclear on the rules or pricing for the [Spaces - Hugging Face](https://hf.space/%E2%80%A6) API endpoints. When I send a cURL request, it returns fine, but unlike with [/static-proxy?url=https%3A%2F%2Fapi-inference.huggingface.co%2F%E2%80%A6%5D(https%3A%2F%2Fapi-inference.huggingface.co%2F%25E2%2580%25A6) I don’t include an API key, so how would it charge me. Or if it is free, then what are the usage limits?
Re-asking the question from 2022. Thank you!
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**Author:**  [@John6666](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2FJohn6666)%5C
**Post date:** [March 28, 2025, 12:04pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Flimits-on-gradio-api-hf-spaces%2F147812%2F2 "2025-03-28T12:04:12Z")
Calling Gradio Spaces via the API is free and best effort. Only for Zero GPU Spaces, there is a benefit from a token with a Pro subscription. (There is a version-dependent bug.)
It is recommended that people who want stable operation use Endpoint API (dedicated) etc.
The fee is paid by the person hosting the Spaces.
> **[Hugging Face – Pricing](https://huggingface.co/pricing#spaces)**
>
> The simplest way to access compute for AI
If you’re worried, ask the following support.
Payment related: [billing@huggingface.co](mailto:billing@huggingface.co)
General: [website@huggingface.co](mailto:website@huggingface.co)
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**Author:**  [@system](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Fu%2Fsystem)%5C
**Post date:** [March 31, 2025, 12:18pm UTC](/static-proxy?url=https%3A%2F%2Fdiscuss.huggingface.co%2Ft%2Flimits-on-gradio-api-hf-spaces%2F147812%2F3 "2025-03-31T12:18:48Z")
Closed on March 31, 2025, 12:18pm UTC
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