Unfortunately, Hugging Face doesn’t explicitly publish the exact rate limit for their free Inference API. They prefer to keep it flexible and adaptive to ensure fair usage for all users.

I Think Its Mostly Based On Below Things Like :

• Limited requests per minute: Generally, you can expect a few hundred requests per minute without encountering throttling. However, this can vary depending on the model size and resource usage.
• Model size restriction: Free tier has a maximum model size limit of 10GB

And many Other Things Are Causes Rate Limit.They Also Have Pro Tier Where Rate Limit is higer And Send More Request per Minute

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