> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # OperatorName Operator identifier used in filter definitions ## Example Usage ```typescript theme={null} import { OperatorName } from "@openrouter/sdk/models/operations"; let value: OperatorName = "eq"; // Open enum: unrecognized values are captured as Unrecognized ``` ## Values ```typescript theme={null} "eq" | "neq" | "in" | "not_in" | "gt" | "gte" | "lt" | "lte" | Unrecognized ```