The public face of Xentir's internal licensing register. A source is used only after its terms are read and recorded here — an unread or unverifiable licence is treated as a no-go, not a maybe.
Epoch AI Benchmarking Hub — epoch.ai/benchmarks. Licence: CC BY 4.0, which explicitly permits redistribution and public display with attribution. Required citation, shown on every page that carries Epoch data: “Epoch AI, 'AI Benchmarking Hub'. Published online at epoch.ai. Retrieved from 'https://epoch.ai/benchmarks' [online resource].” · epoch.ai/benchmarks · Licensed CC BY 4.0 Xentir reads only the benchmarks Epoch itself runs (GPQA Diamond, MATH Level 5, SWE-bench Verified, OTIS Mock AIME, FrontierMath, FrontierMath Tier 4, SimpleQA Verified, Chess Puzzles) plus Epoch's own composite (ECI), downloaded as the zip Epoch publishes — never scraped, never read via a third-party client. Epoch also redistributes dozens of third-party leaderboards in the same bundle (*_external.csv); none of those are read, because Epoch's own licence does not extend to a third party's terms. Each would need its own review first.
Vendor-published pricing — official price pages only, no aggregators. OpenAI and Anthropic's own developer pricing pages are reachable and approved for use once ingested; Google's Gemini API pricing page currently redirects to an authentication prompt when fetched programmatically and would ship blank rather than substitute a different product's price. A price Xentir does not have will always be left blank, never estimated.
LiveBench — permissively licensed (Apache-2.0 / MIT), but its published datasets have not been updated with current models and its site exposes no live data feed. Kept on file rather than used, in case a live feed reappears.
Artificial Analysis — attribution is free to use their API, but redistribution — publishing their numbers on a public page — is sold as a separate product. Internal research only, unless that is purchased.
LLM Stats — terms could not be independently re-verified; the earlier, more conservative reading (personal, non-commercial viewing only) stands.
Hugging Face leaderboard datasets — the platform's terms are not the same as any individual dataset's terms, and none of the underlying datasets have been separately cleared.
Sources are re-verified on a schedule, and a stale review is treated as a no-go until re-read. Questions about a source or a licence: [email protected].