Hugging Face silent rate-limiting mimics frozen downloads for anonymous users

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Developers downloading large models from Hugging Face without authentication can experience downloads that appear to hang at 0 B/s, but are actually being silently rate-limited. Anonymous users share a quota of 3,000 requests per 5-minute window per IP address, meaning shared networks like office NATs or university connections deplete the limit faster. When the quota is exceeded, the Hub responds with a 429 status and a reset timer, while the huggingface_hub client quietly waits out the penalty without displaying any notification. The telltale sign is a fast initial burst followed by a consistent stall at the same point every retry — a pattern that signals a policy limit rather than a network failure. Setting a HF_TOKEN environment variable grants authenticated users higher rate limits and avoids the issue entirely.

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