model-provenance
Everything on Ground Truth tagged “model-provenance” — 2 items.
Model Fingerprinting: Working Out Which Model Is Really Answering You Lesson
Model fingerprinting is the practice of identifying which model is behind an unlabelled endpoint by measuring its behavior rather than reading its label, using constants like token accounting, default parameters, error codes, and output statistics that a provider rarely thinks to disguise.
A free million-token model appeared with no owner and two conflicting privacy policies News
Ox Alpha, a free anonymous model on OpenRouter with a 1,048,576-token context window, is described as zero-retention in one set of documentation and as retaining prompts and completions in another, while an independent token-level analysis points to Zhipu's GLM line as the likely provider.