OpenSiDot

OpenSiDot (shown as OpenSI on its site) is a web comparison of AI model prices, context windows, inputs/outputs, reasoning and tool support and open-weights status — 349 models from 53 vendors on its homepage — plus an LLM API pricing calculator. It is a reference, not a tool: it gives facts only, no quality scores. It is part of the Si family (its pages link AllSiTools and SiChatApp), which does not change the usefulness of the reference, but the snapshot date must be disclosed in the entry.