> ## 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. # ModelGroup Tokenizer type used by the model ## Example Usage ```typescript theme={null} import { ModelGroup } from "@openrouter/sdk/models"; let value: ModelGroup = "GPT"; // Open enum: unrecognized values are captured as Unrecognized ``` ## Values ```typescript theme={null} "Router" | "Media" | "Other" | "GPT" | "Claude" | "Gemini" | "Gemma" | "Grok" | "Cohere" | "Nova" | "Qwen" | "Yi" | "DeepSeek" | "Mistral" | "Llama2" | "Llama3" | "Llama4" | "PaLM" | "RWKV" | "Qwen3" | Unrecognized ```