OpenRouter vs Hugging Face Inference Providers

Why

The fee shapes differ at the root, and Hugging Face wins that comparison outright. Both publish 0% token markup. OpenRouter then takes 5.5% when you buy credits, with a $0.80 minimum, so a $5 top-up costs $5.80. Hugging Face states the position four times across its docs — "Hugging Face charges you the same rates as the provider, with no additional fees. We just pass through the provider costs directly" — and its BYOK mode, the Custom Provider Key, keeps HF routing while the provider bills you and Hugging Face charges nothing for the call. One honest caveat on the arithmetic: no credit-purchase fee is documented anywhere on the Inference Providers pricing page, the Hub billing FAQ or the Hugging Face pricing page, so the record leaves that field unset rather than recording a confirmed zero. OpenRouter's BYOK, by contrast, is free only up to $25,000 a month of list-price inference on pay-as-you-go, or $200,000 on Enterprise, then costs 5%.

Catalogue is where the trade actually lives, and it is not a close-run thing. OpenRouter lists 80+ providers on its pricing page, "83 of 83" on its providers directory, and a live models call on 2026-08-29 returned 396 entries across 58 creator prefixes against a 500+ marketing figure. Hugging Face counts 18 partners on its docs index, of which 15 carry the chat-completion mark and 14 appeared in the live public router catalogue on 2026-09-03; its own headline is "200+ models" while the router returned 136 chat-completion models the same day. More decisive than any of those numbers: the catalogue is open-weight only. Anthropic is not one of the 18 partners, and no Anthropic Messages surface exists. If one route in your application calls Claude, GPT or Gemini, this pair is already decided and the fee never enters it.

What the 5.5% buys is a control surface, and this is the part a price comparison hides. OpenRouter documents a DLP scanner with 7 built-in sensitive-data types backed by regex plus Microsoft Presidio, prompt-injection detection over 30+ patterns mapped to OWASP LLM risks, per-type Flag, Redact and Block actions where Block returns a 403 before the model is called, model and provider allowlists, and a batch API at /api/beta/batches with a 24-hour window. Hugging Face has none of that: no PII redaction, no injection detection, no moderation, no model policy for callers, no cache of its own, no prompt management, no batch endpoint, and no user-settable timeout, retry, weight or region anywhere in the docs. Its reliability surface is entirely HF-operated and genuinely good at what it does — every mapped model is tested every 6 hours against a sub-5-second time-to-first-token admission bar, failing providers are removed and retested hourly, and provider="auto" falls through automatically — but it is operated, not configured. The routing policy you get is a suffix on the model id: :fastest, :cheapest, :preferred, or an explicit provider pin. Neither side documents OpenTelemetry or trace export, so that gap is shared.

The compliance picture needs reading carefully rather than scoring. OpenRouter asserts SOC 2 Type II and GDPR compatibility on its enterprise page, offers EU and US in-region routing at eu.openrouter.ai and us.openrouter.ai for enterprise accounts on request, and applies zero data retention on all accounts with no plan gate. Hugging Face's SOC 2, GDPR, BAA and EU-residency fields are blank, and that blank does not mean no: SOC 2 Type 2 is asserted for the Hub "which Inference Providers is a feature of", and BAAs and DPAs are offered through an Enterprise Hub plan. Those are statements about the Hub and the company, not about the router, and no Inference-Providers-specific attestation exists. Two things do count against Hugging Face here: routed inference has no published region control, and the company subprocessor list does not name any of the 18 partners your prompts are actually sent to. One thing counts firmly for it — "We do not store the request body or response when routing requests through Hugging Face", stated unconditionally, with 30-day debugging logs holding no user data, on every account and at no price. That is a better default than an enterprise conversation.