# Omnia Model Hub > Omnia (Omnia Model Hub) is a neutral marketplace for model inference API calls. It gives developers one OpenAI-compatible endpoint, lets suppliers publish their own quotes for the same model, verifies supply with probes and five-level trust grades, and charges a buyer-side transaction fee on each successful call. Omnia is a marketplace for model inference API calls. It is not a securities exchange, a crypto-asset trading platform, a model-weight shop or a cash payout programme. English is the primary language; Simplified Chinese is complete on every page. Payments are not connected in the development build. ## Key facts - One OpenAI-compatible base URL, API key authentication, versioned model catalogue. - Multiple suppliers quote the same model; price, first-token latency, throughput, seven-day success rate and five-level trust grade are published per listing. - Billing: input, cached input and output tokens priced per million; 5 percent buyer-side transaction fee on the subtotal; failed retries and empty completions are not billed. - Every bill has line items, a settlement record and is recomputable from usage events. - Every account gets one invite link. Reward is non-withdrawable platform credit only. No cash payout, no tiers, no downline, no recruitment reward. - Administrators use a separate sign-in page, separate account store and granular permissions. - All fifteen modules shipped together in version 1.0 on 2026-11-15. ## Documentation - [Omnia Model Hub — One API, every model, verifiable supply](/): Omnia (Omnia Model Hub) is a neutral marketplace for model inference API calls. It gives developers one OpenAI-compatible endpoint, lets suppliers publish their own quotes for the same model, verifies supply with probes and five-level trust grades, and charges a buyer-side transaction fee on each successful call. - [Features — Omnia Model Hub](/features): All fifteen modules are developed as one release, not in phases. - [Models and suppliers — Omnia Model Hub](/models): The live marketplace is served from the platform database, so the website and the console never disagree. - [Pricing — Omnia Model Hub](/pricing): Suppliers set quotes. Omnia charges one transparent buyer-side fee on each successful call. - [API documentation — Omnia Model Hub](/docs): Point an OpenAI-compatible client at the Omnia base URL and use your platform API key. - [Frequently asked questions — Omnia Model Hub](/faq): Direct answers, written so they can be quoted accurately. - [Comparison — Omnia, OpenRouter and Baidu Ciyuansuo](/compare): Omnia aligns primarily with OpenRouter's developer experience and uses Baidu Ciyuansuo as a secondary reference for its verification layer. - [Security — Omnia Model Hub](/security): Security controls are implemented in the application, not promised as a future phase. - [About Omnia](/about): Name, scope and operating sequence. - [Status — Omnia Model Hub](/status): Service state is read from the platform's own incident records. - [Changelog — Omnia Model Hub](/changelog): Dated changes, written for people and for retrieval systems. ## Machine-readable - /robots.txt: crawler policy including generative-engine crawlers - /sitemap.xml: canonical URLs - /llms-full.txt: full page text in plain form - /api/public/models: live listing catalogue (JSON) - /api/public/rankings: published ranking methodology (JSON) - /api/health: service state (JSON) - /assets/brand/omnia-logo.png: official transparent logo (512x512) - /assets/site.webmanifest: progressive web app icons Last updated: 2026-11-15.